diff --git a/docs/developer/plugin-list.asciidoc b/docs/developer/plugin-list.asciidoc
index 5a4a60c2e628e..4918a87a3ff76 100644
--- a/docs/developer/plugin-list.asciidoc
+++ b/docs/developer/plugin-list.asciidoc
@@ -70,8 +70,20 @@ This API doesn't support angular, for registering angular dev tools, bootstrap a
 |This plugin contains reusable code in the form of self-contained modules (or libraries). Each of these modules exports a set of functionality relevant to the domain of the module.
 
 
-|{kib-repo}blob/{branch}/src/plugins/expressions/README.md[expressions]
-|This plugin provides methods which will parse & execute an expression pipeline
+|<<kibana-expressions-plugin>>
+|Expression pipeline is a chain of functions that *pipe* its output to the
+input of the next function. Functions can be configured using arguments provided
+by the user. The final output of the expression pipeline can be rendered using
+one of the *renderers* registered in `expressions` plugin.
+
+All the arguments to expression functions need to be serializable, as well as input and output.
+Expression functions should try to stay 'pure'. This makes functions easy to reuse and also 
+make it possible to serialize the whole chain as well as output at every step of execution.
+
+Expressions power visualizations in Dashboard and Lens, as well as, every
+*element* in Canvas is backed by an expression.
+
+This plugin provides methods which will parse & execute an *expression pipeline*
 string for you, as well as a series of registries for advanced users who might
 want to incorporate their own functions, types, and renderers into the service
 for use in their own application.
@@ -511,5 +523,6 @@ in their infrastructure.
 |===
 
 include::{kibana-root}/src/plugins/dashboard/README.asciidoc[leveloffset=+1]
+include::{kibana-root}/src/plugins/expressions/README.asciidoc[leveloffset=+1]
 include::{kibana-root}/x-pack/plugins/dashboard_enhanced/README.asciidoc[leveloffset=+1]
 include::{kibana-root}/x-pack/plugins/embeddable_enhanced/README.asciidoc[leveloffset=+1]
diff --git a/docs/development/plugins/expressions/public/index.md b/docs/development/plugins/expressions/public/index.md
new file mode 100644
index 0000000000000..ade7a9e90b517
--- /dev/null
+++ b/docs/development/plugins/expressions/public/index.md
@@ -0,0 +1,12 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md)
+
+## API Reference
+
+## Packages
+
+|  Package | Description |
+|  --- | --- |
+|  [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.anyexpressionfunctiondefinition.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.anyexpressionfunctiondefinition.md
new file mode 100644
index 0000000000000..f905a1028d217
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.anyexpressionfunctiondefinition.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [AnyExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-public.anyexpressionfunctiondefinition.md)
+
+## AnyExpressionFunctionDefinition type
+
+Type to capture every possible expression function definition.
+
+<b>Signature:</b>
+
+```typescript
+export declare type AnyExpressionFunctionDefinition = ExpressionFunctionDefinition<string, any, Record<string, any>, any>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.anyexpressiontypedefinition.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.anyexpressiontypedefinition.md
new file mode 100644
index 0000000000000..c213de4341a6a
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.anyexpressiontypedefinition.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [AnyExpressionTypeDefinition](./kibana-plugin-plugins-expressions-public.anyexpressiontypedefinition.md)
+
+## AnyExpressionTypeDefinition type
+
+<b>Signature:</b>
+
+```typescript
+export declare type AnyExpressionTypeDefinition = ExpressionTypeDefinition<any, any, any>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.argumenttype.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.argumenttype.md
new file mode 100644
index 0000000000000..bf80b863fda90
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.argumenttype.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ArgumentType](./kibana-plugin-plugins-expressions-public.argumenttype.md)
+
+## ArgumentType type
+
+This type represents all of the possible combinations of properties of an Argument in an Expression Function. The presence or absence of certain fields influence the shape and presence of others within each `arg` in the specification.
+
+<b>Signature:</b>
+
+```typescript
+export declare type ArgumentType<T> = SingleArgumentType<T> | MultipleArgumentType<T> | UnresolvedSingleArgumentType<T> | UnresolvedMultipleArgumentType<T>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.buildexpression.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.buildexpression.md
new file mode 100644
index 0000000000000..e1d522588aae8
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.buildexpression.md
@@ -0,0 +1,24 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [buildExpression](./kibana-plugin-plugins-expressions-public.buildexpression.md)
+
+## buildExpression() function
+
+Makes it easy to progressively build, update, and traverse an expression AST. You can either start with an empty AST, or provide an expression string, AST, or array of expression function builders to use as initial state.
+
+<b>Signature:</b>
+
+```typescript
+export declare function buildExpression(initialState?: ExpressionAstFunctionBuilder[] | ExpressionAstExpression | string): ExpressionAstExpressionBuilder;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  initialState | <code>ExpressionAstFunctionBuilder[] &#124; ExpressionAstExpression &#124; string</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionAstExpressionBuilder`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.buildexpressionfunction.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.buildexpressionfunction.md
new file mode 100644
index 0000000000000..79deb7157130e
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.buildexpressionfunction.md
@@ -0,0 +1,30 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [buildExpressionFunction](./kibana-plugin-plugins-expressions-public.buildexpressionfunction.md)
+
+## buildExpressionFunction() function
+
+Manages an AST for a single expression function. The return value can be provided to `buildExpression` to add this function to an expression.
+
+Note that to preserve type safety and ensure no args are missing, all required arguments for the specified function must be provided up front. If desired, they can be changed or removed later.
+
+<b>Signature:</b>
+
+```typescript
+export declare function buildExpressionFunction<FnDef extends AnyExpressionFunctionDefinition = AnyExpressionFunctionDefinition>(fnName: InferFunctionDefinition<FnDef>['name'], 
+initialArgs: {
+    [K in keyof FunctionArgs<FnDef>]: FunctionArgs<FnDef>[K] | ExpressionAstExpressionBuilder | ExpressionAstExpressionBuilder[];
+}): ExpressionAstFunctionBuilder<FnDef>;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  fnName | <code>InferFunctionDefinition&lt;FnDef&gt;['name']</code> |  |
+|  initialArgs | <code>{</code><br/><code>    [K in keyof FunctionArgs&lt;FnDef&gt;]: FunctionArgs&lt;FnDef&gt;[K] &#124; ExpressionAstExpressionBuilder &#124; ExpressionAstExpressionBuilder[];</code><br/><code>}</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionAstFunctionBuilder<FnDef>`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatable.columns.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatable.columns.md
new file mode 100644
index 0000000000000..d24c4f4dfb176
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatable.columns.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Datatable](./kibana-plugin-plugins-expressions-public.datatable.md) &gt; [columns](./kibana-plugin-plugins-expressions-public.datatable.columns.md)
+
+## Datatable.columns property
+
+<b>Signature:</b>
+
+```typescript
+columns: DatatableColumn[];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatable.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatable.md
new file mode 100644
index 0000000000000..f2daf656dfa73
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatable.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Datatable](./kibana-plugin-plugins-expressions-public.datatable.md)
+
+## Datatable interface
+
+A `Datatable` in Canvas is a unique structure that represents tabulated data.
+
+<b>Signature:</b>
+
+```typescript
+export interface Datatable 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [columns](./kibana-plugin-plugins-expressions-public.datatable.columns.md) | <code>DatatableColumn[]</code> |  |
+|  [rows](./kibana-plugin-plugins-expressions-public.datatable.rows.md) | <code>DatatableRow[]</code> |  |
+|  [type](./kibana-plugin-plugins-expressions-public.datatable.type.md) | <code>typeof name</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatable.rows.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatable.rows.md
new file mode 100644
index 0000000000000..0d52e446b09fd
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatable.rows.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Datatable](./kibana-plugin-plugins-expressions-public.datatable.md) &gt; [rows](./kibana-plugin-plugins-expressions-public.datatable.rows.md)
+
+## Datatable.rows property
+
+<b>Signature:</b>
+
+```typescript
+rows: DatatableRow[];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatable.type.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatable.type.md
new file mode 100644
index 0000000000000..e0ee6fd5d8372
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatable.type.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Datatable](./kibana-plugin-plugins-expressions-public.datatable.md) &gt; [type](./kibana-plugin-plugins-expressions-public.datatable.type.md)
+
+## Datatable.type property
+
+<b>Signature:</b>
+
+```typescript
+type: typeof name;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatablecolumn.id.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatablecolumn.id.md
new file mode 100644
index 0000000000000..d9b98e6cf939e
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatablecolumn.id.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [DatatableColumn](./kibana-plugin-plugins-expressions-public.datatablecolumn.md) &gt; [id](./kibana-plugin-plugins-expressions-public.datatablecolumn.id.md)
+
+## DatatableColumn.id property
+
+<b>Signature:</b>
+
+```typescript
+id: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatablecolumn.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatablecolumn.md
new file mode 100644
index 0000000000000..d67a5d9b36b12
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatablecolumn.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [DatatableColumn](./kibana-plugin-plugins-expressions-public.datatablecolumn.md)
+
+## DatatableColumn interface
+
+This type represents the shape of a column in a `Datatable`<!-- -->.
+
+<b>Signature:</b>
+
+```typescript
+export interface DatatableColumn 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [id](./kibana-plugin-plugins-expressions-public.datatablecolumn.id.md) | <code>string</code> |  |
+|  [meta](./kibana-plugin-plugins-expressions-public.datatablecolumn.meta.md) | <code>DatatableColumnMeta</code> |  |
+|  [name](./kibana-plugin-plugins-expressions-public.datatablecolumn.name.md) | <code>string</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatablecolumn.meta.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatablecolumn.meta.md
new file mode 100644
index 0000000000000..a5414dde86f97
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatablecolumn.meta.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [DatatableColumn](./kibana-plugin-plugins-expressions-public.datatablecolumn.md) &gt; [meta](./kibana-plugin-plugins-expressions-public.datatablecolumn.meta.md)
+
+## DatatableColumn.meta property
+
+<b>Signature:</b>
+
+```typescript
+meta: DatatableColumnMeta;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatablecolumn.name.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatablecolumn.name.md
new file mode 100644
index 0000000000000..74c3883e7a172
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatablecolumn.name.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [DatatableColumn](./kibana-plugin-plugins-expressions-public.datatablecolumn.md) &gt; [name](./kibana-plugin-plugins-expressions-public.datatablecolumn.name.md)
+
+## DatatableColumn.name property
+
+<b>Signature:</b>
+
+```typescript
+name: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatablecolumntype.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatablecolumntype.md
new file mode 100644
index 0000000000000..a06ab351e62c3
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatablecolumntype.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [DatatableColumnType](./kibana-plugin-plugins-expressions-public.datatablecolumntype.md)
+
+## DatatableColumnType type
+
+This type represents the `type` of any `DatatableColumn` in a `Datatable`<!-- -->.
+
+<b>Signature:</b>
+
+```typescript
+export declare type DatatableColumnType = 'string' | 'number' | 'boolean' | 'date' | 'null';
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatablerow.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatablerow.md
new file mode 100644
index 0000000000000..87cc15d0d4091
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.datatablerow.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [DatatableRow](./kibana-plugin-plugins-expressions-public.datatablerow.md)
+
+## DatatableRow type
+
+This type represents a row in a `Datatable`<!-- -->.
+
+<b>Signature:</b>
+
+```typescript
+export declare type DatatableRow = Record<string, any>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution._constructor_.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution._constructor_.md
new file mode 100644
index 0000000000000..1d0c9f99169db
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution._constructor_.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Execution](./kibana-plugin-plugins-expressions-public.execution.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-public.execution._constructor_.md)
+
+## Execution.(constructor)
+
+Constructs a new instance of the `Execution` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(params: ExecutionParams<ExtraContext>);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  params | <code>ExecutionParams&lt;ExtraContext&gt;</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.cancel.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.cancel.md
new file mode 100644
index 0000000000000..e87cea30dd5b6
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.cancel.md
@@ -0,0 +1,17 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Execution](./kibana-plugin-plugins-expressions-public.execution.md) &gt; [cancel](./kibana-plugin-plugins-expressions-public.execution.cancel.md)
+
+## Execution.cancel() method
+
+Stop execution of expression.
+
+<b>Signature:</b>
+
+```typescript
+cancel(): void;
+```
+<b>Returns:</b>
+
+`void`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.cast.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.cast.md
new file mode 100644
index 0000000000000..632849af7c82b
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.cast.md
@@ -0,0 +1,23 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Execution](./kibana-plugin-plugins-expressions-public.execution.md) &gt; [cast](./kibana-plugin-plugins-expressions-public.execution.cast.md)
+
+## Execution.cast() method
+
+<b>Signature:</b>
+
+```typescript
+cast(value: any, toTypeNames?: string[]): any;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  value | <code>any</code> |  |
+|  toTypeNames | <code>string[]</code> |  |
+
+<b>Returns:</b>
+
+`any`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.context.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.context.md
new file mode 100644
index 0000000000000..732fe94d65617
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.context.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Execution](./kibana-plugin-plugins-expressions-public.execution.md) &gt; [context](./kibana-plugin-plugins-expressions-public.execution.context.md)
+
+## Execution.context property
+
+Execution context - object that allows to do side-effects. Context is passed to every function.
+
+<b>Signature:</b>
+
+```typescript
+readonly context: ExecutionContext<Input, InspectorAdapters> & ExtraContext;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.contract.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.contract.md
new file mode 100644
index 0000000000000..fa03297ea22a7
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.contract.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Execution](./kibana-plugin-plugins-expressions-public.execution.md) &gt; [contract](./kibana-plugin-plugins-expressions-public.execution.contract.md)
+
+## Execution.contract property
+
+Contract is a public representation of `Execution` instances. Contract we can return to other plugins for their consumption.
+
+<b>Signature:</b>
+
+```typescript
+readonly contract: ExecutionContract<ExtraContext, Input, Output, InspectorAdapters>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.expression.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.expression.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.expression.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Execution](./kibana-plugin-plugins-expressions-public.execution.md) &gt; [expression](./kibana-plugin-plugins-expressions-public.execution.expression.md)
+
+## Execution.expression property
+
+<b>Signature:</b>
+
+```typescript
+readonly expression: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.input.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.input.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.input.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Execution](./kibana-plugin-plugins-expressions-public.execution.md) &gt; [input](./kibana-plugin-plugins-expressions-public.execution.input.md)
+
+## Execution.input property
+
+Initial input of the execution.
+
+N.B. It is initialized to `null` rather than `undefined` for legacy reasons, because in legacy interpreter it was set to `null` by default.
+
+<b>Signature:</b>
+
+```typescript
+input: Input;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.inspectoradapters.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.inspectoradapters.md
new file mode 100644
index 0000000000000..728015011f7d9
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.inspectoradapters.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Execution](./kibana-plugin-plugins-expressions-public.execution.md) &gt; [inspectorAdapters](./kibana-plugin-plugins-expressions-public.execution.inspectoradapters.md)
+
+## Execution.inspectorAdapters property
+
+<b>Signature:</b>
+
+```typescript
+get inspectorAdapters(): InspectorAdapters;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.interpret.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.interpret.md
new file mode 100644
index 0000000000000..31f38b7069812
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.interpret.md
@@ -0,0 +1,24 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Execution](./kibana-plugin-plugins-expressions-public.execution.md) &gt; [interpret](./kibana-plugin-plugins-expressions-public.execution.interpret.md)
+
+## Execution.interpret() method
+
+<b>Signature:</b>
+
+```typescript
+interpret<T>(ast: ExpressionAstNode, input: T, options?: ExpressionExecOptions): Promise<unknown>;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  ast | <code>ExpressionAstNode</code> |  |
+|  input | <code>T</code> |  |
+|  options | <code>ExpressionExecOptions</code> |  |
+
+<b>Returns:</b>
+
+`Promise<unknown>`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.invokechain.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.invokechain.md
new file mode 100644
index 0000000000000..5078baf2ca526
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.invokechain.md
@@ -0,0 +1,23 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Execution](./kibana-plugin-plugins-expressions-public.execution.md) &gt; [invokeChain](./kibana-plugin-plugins-expressions-public.execution.invokechain.md)
+
+## Execution.invokeChain() method
+
+<b>Signature:</b>
+
+```typescript
+invokeChain(chainArr: ExpressionAstFunction[], input: unknown): Promise<any>;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  chainArr | <code>ExpressionAstFunction[]</code> |  |
+|  input | <code>unknown</code> |  |
+
+<b>Returns:</b>
+
+`Promise<any>`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.invokefunction.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.invokefunction.md
new file mode 100644
index 0000000000000..e90cee8b626d6
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.invokefunction.md
@@ -0,0 +1,24 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Execution](./kibana-plugin-plugins-expressions-public.execution.md) &gt; [invokeFunction](./kibana-plugin-plugins-expressions-public.execution.invokefunction.md)
+
+## Execution.invokeFunction() method
+
+<b>Signature:</b>
+
+```typescript
+invokeFunction(fn: ExpressionFunction, input: unknown, args: Record<string, unknown>): Promise<any>;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  fn | <code>ExpressionFunction</code> |  |
+|  input | <code>unknown</code> |  |
+|  args | <code>Record&lt;string, unknown&gt;</code> |  |
+
+<b>Returns:</b>
+
+`Promise<any>`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.md
new file mode 100644
index 0000000000000..4d227e6ab85b8
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.md
@@ -0,0 +1,43 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Execution](./kibana-plugin-plugins-expressions-public.execution.md)
+
+## Execution class
+
+<b>Signature:</b>
+
+```typescript
+export declare class Execution<ExtraContext extends Record<string, unknown> = Record<string, unknown>, Input = unknown, Output = unknown, InspectorAdapters extends Adapters = ExtraContext['inspectorAdapters'] extends object ? ExtraContext['inspectorAdapters'] : DefaultInspectorAdapters> 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(params)](./kibana-plugin-plugins-expressions-public.execution._constructor_.md) |  | Constructs a new instance of the <code>Execution</code> class |
+
+## Properties
+
+|  Property | Modifiers | Type | Description |
+|  --- | --- | --- | --- |
+|  [context](./kibana-plugin-plugins-expressions-public.execution.context.md) |  | <code>ExecutionContext&lt;Input, InspectorAdapters&gt; &amp; ExtraContext</code> | Execution context - object that allows to do side-effects. Context is passed to every function. |
+|  [contract](./kibana-plugin-plugins-expressions-public.execution.contract.md) |  | <code>ExecutionContract&lt;ExtraContext, Input, Output, InspectorAdapters&gt;</code> | Contract is a public representation of <code>Execution</code> instances. Contract we can return to other plugins for their consumption. |
+|  [expression](./kibana-plugin-plugins-expressions-public.execution.expression.md) |  | <code>string</code> |  |
+|  [input](./kibana-plugin-plugins-expressions-public.execution.input.md) |  | <code>Input</code> | Initial input of the execution.<!-- -->N.B. It is initialized to <code>null</code> rather than <code>undefined</code> for legacy reasons, because in legacy interpreter it was set to <code>null</code> by default. |
+|  [inspectorAdapters](./kibana-plugin-plugins-expressions-public.execution.inspectoradapters.md) |  | <code>InspectorAdapters</code> |  |
+|  [params](./kibana-plugin-plugins-expressions-public.execution.params.md) |  | <code>ExecutionParams&lt;ExtraContext&gt;</code> |  |
+|  [result](./kibana-plugin-plugins-expressions-public.execution.result.md) |  | <code>Promise&lt;Output &#124; ExpressionValueError&gt;</code> |  |
+|  [state](./kibana-plugin-plugins-expressions-public.execution.state.md) |  | <code>ExecutionContainer&lt;Output &#124; ExpressionValueError&gt;</code> | Dynamic state of the execution. |
+
+## Methods
+
+|  Method | Modifiers | Description |
+|  --- | --- | --- |
+|  [cancel()](./kibana-plugin-plugins-expressions-public.execution.cancel.md) |  | Stop execution of expression. |
+|  [cast(value, toTypeNames)](./kibana-plugin-plugins-expressions-public.execution.cast.md) |  |  |
+|  [interpret(ast, input, options)](./kibana-plugin-plugins-expressions-public.execution.interpret.md) |  |  |
+|  [invokeChain(chainArr, input)](./kibana-plugin-plugins-expressions-public.execution.invokechain.md) |  |  |
+|  [invokeFunction(fn, input, args)](./kibana-plugin-plugins-expressions-public.execution.invokefunction.md) |  |  |
+|  [resolveArgs(fnDef, input, argAsts)](./kibana-plugin-plugins-expressions-public.execution.resolveargs.md) |  |  |
+|  [start(input)](./kibana-plugin-plugins-expressions-public.execution.start.md) |  | Call this method to start execution.<!-- -->N.B. <code>input</code> is initialized to <code>null</code> rather than <code>undefined</code> for legacy reasons, because in legacy interpreter it was set to <code>null</code> by default. |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.params.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.params.md
new file mode 100644
index 0000000000000..cd90bf6adab47
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.params.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Execution](./kibana-plugin-plugins-expressions-public.execution.md) &gt; [params](./kibana-plugin-plugins-expressions-public.execution.params.md)
+
+## Execution.params property
+
+<b>Signature:</b>
+
+```typescript
+readonly params: ExecutionParams<ExtraContext>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.resolveargs.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.resolveargs.md
new file mode 100644
index 0000000000000..ab67dff604a86
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.resolveargs.md
@@ -0,0 +1,24 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Execution](./kibana-plugin-plugins-expressions-public.execution.md) &gt; [resolveArgs](./kibana-plugin-plugins-expressions-public.execution.resolveargs.md)
+
+## Execution.resolveArgs() method
+
+<b>Signature:</b>
+
+```typescript
+resolveArgs(fnDef: ExpressionFunction, input: unknown, argAsts: any): Promise<any>;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  fnDef | <code>ExpressionFunction</code> |  |
+|  input | <code>unknown</code> |  |
+|  argAsts | <code>any</code> |  |
+
+<b>Returns:</b>
+
+`Promise<any>`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.result.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.result.md
new file mode 100644
index 0000000000000..e0167a3a378fe
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.result.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Execution](./kibana-plugin-plugins-expressions-public.execution.md) &gt; [result](./kibana-plugin-plugins-expressions-public.execution.result.md)
+
+## Execution.result property
+
+<b>Signature:</b>
+
+```typescript
+get result(): Promise<Output | ExpressionValueError>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.start.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.start.md
new file mode 100644
index 0000000000000..c6edc43d423dc
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.start.md
@@ -0,0 +1,26 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Execution](./kibana-plugin-plugins-expressions-public.execution.md) &gt; [start](./kibana-plugin-plugins-expressions-public.execution.start.md)
+
+## Execution.start() method
+
+Call this method to start execution.
+
+N.B. `input` is initialized to `null` rather than `undefined` for legacy reasons, because in legacy interpreter it was set to `null` by default.
+
+<b>Signature:</b>
+
+```typescript
+start(input?: Input): void;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  input | <code>Input</code> |  |
+
+<b>Returns:</b>
+
+`void`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.state.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.state.md
new file mode 100644
index 0000000000000..ca8b57b760f29
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.state.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Execution](./kibana-plugin-plugins-expressions-public.execution.md) &gt; [state](./kibana-plugin-plugins-expressions-public.execution.state.md)
+
+## Execution.state property
+
+Dynamic state of the execution.
+
+<b>Signature:</b>
+
+```typescript
+readonly state: ExecutionContainer<Output | ExpressionValueError>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontainer.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontainer.md
new file mode 100644
index 0000000000000..5cea6c4bc4b8f
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontainer.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionContainer](./kibana-plugin-plugins-expressions-public.executioncontainer.md)
+
+## ExecutionContainer type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExecutionContainer<Output = ExpressionValue> = StateContainer<ExecutionState<Output>, ExecutionPureTransitions<Output>>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.abortsignal.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.abortsignal.md
new file mode 100644
index 0000000000000..caedf4344dc35
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.abortsignal.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionContext](./kibana-plugin-plugins-expressions-public.executioncontext.md) &gt; [abortSignal](./kibana-plugin-plugins-expressions-public.executioncontext.abortsignal.md)
+
+## ExecutionContext.abortSignal property
+
+Adds ability to abort current execution.
+
+<b>Signature:</b>
+
+```typescript
+abortSignal: AbortSignal;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.getinitialinput.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.getinitialinput.md
new file mode 100644
index 0000000000000..460b1622c6fbd
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.getinitialinput.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionContext](./kibana-plugin-plugins-expressions-public.executioncontext.md) &gt; [getInitialInput](./kibana-plugin-plugins-expressions-public.executioncontext.getinitialinput.md)
+
+## ExecutionContext.getInitialInput property
+
+Get initial input with which execution started.
+
+<b>Signature:</b>
+
+```typescript
+getInitialInput: () => Input;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.getsavedobject.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.getsavedobject.md
new file mode 100644
index 0000000000000..dffce4a091718
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.getsavedobject.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionContext](./kibana-plugin-plugins-expressions-public.executioncontext.md) &gt; [getSavedObject](./kibana-plugin-plugins-expressions-public.executioncontext.getsavedobject.md)
+
+## ExecutionContext.getSavedObject property
+
+Allows to fetch saved objects from ElasticSearch. In browser `getSavedObject` function is provided automatically by the Expressions plugin. On the server the caller of the expression has to provide this context function. The reason is because on the browser we always know the user who tries to fetch a saved object, thus saved object client is scoped automatically to that user. However, on the server we can scope that saved object client to any user, or even not scope it at all and execute it as an "internal" user.
+
+<b>Signature:</b>
+
+```typescript
+getSavedObject?: <T extends SavedObjectAttributes = SavedObjectAttributes>(type: string, id: string) => Promise<SavedObject<T>>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.inspectoradapters.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.inspectoradapters.md
new file mode 100644
index 0000000000000..6f0db6af5616e
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.inspectoradapters.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionContext](./kibana-plugin-plugins-expressions-public.executioncontext.md) &gt; [inspectorAdapters](./kibana-plugin-plugins-expressions-public.executioncontext.inspectoradapters.md)
+
+## ExecutionContext.inspectorAdapters property
+
+Adapters for `inspector` plugin.
+
+<b>Signature:</b>
+
+```typescript
+inspectorAdapters: InspectorAdapters;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.md
new file mode 100644
index 0000000000000..786e94455c600
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.md
@@ -0,0 +1,26 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionContext](./kibana-plugin-plugins-expressions-public.executioncontext.md)
+
+## ExecutionContext interface
+
+`ExecutionContext` is an object available to all functions during a single execution; it provides various methods to perform side-effects.
+
+<b>Signature:</b>
+
+```typescript
+export interface ExecutionContext<Input = unknown, InspectorAdapters extends Adapters = Adapters> 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [abortSignal](./kibana-plugin-plugins-expressions-public.executioncontext.abortsignal.md) | <code>AbortSignal</code> | Adds ability to abort current execution. |
+|  [getInitialInput](./kibana-plugin-plugins-expressions-public.executioncontext.getinitialinput.md) | <code>() =&gt; Input</code> | Get initial input with which execution started. |
+|  [getSavedObject](./kibana-plugin-plugins-expressions-public.executioncontext.getsavedobject.md) | <code>&lt;T extends SavedObjectAttributes = SavedObjectAttributes&gt;(type: string, id: string) =&gt; Promise&lt;SavedObject&lt;T&gt;&gt;</code> | Allows to fetch saved objects from ElasticSearch. In browser <code>getSavedObject</code> function is provided automatically by the Expressions plugin. On the server the caller of the expression has to provide this context function. The reason is because on the browser we always know the user who tries to fetch a saved object, thus saved object client is scoped automatically to that user. However, on the server we can scope that saved object client to any user, or even not scope it at all and execute it as an "internal" user. |
+|  [inspectorAdapters](./kibana-plugin-plugins-expressions-public.executioncontext.inspectoradapters.md) | <code>InspectorAdapters</code> | Adapters for <code>inspector</code> plugin. |
+|  [search](./kibana-plugin-plugins-expressions-public.executioncontext.search.md) | <code>ExecutionContextSearch</code> | Search context in which expression should operate. |
+|  [types](./kibana-plugin-plugins-expressions-public.executioncontext.types.md) | <code>Record&lt;string, ExpressionType&gt;</code> | A map of available expression types. |
+|  [variables](./kibana-plugin-plugins-expressions-public.executioncontext.variables.md) | <code>Record&lt;string, unknown&gt;</code> | Context variables that can be consumed using <code>var</code> and <code>var_set</code> functions. |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.search.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.search.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.search.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionContext](./kibana-plugin-plugins-expressions-public.executioncontext.md) &gt; [search](./kibana-plugin-plugins-expressions-public.executioncontext.search.md)
+
+## ExecutionContext.search property
+
+Search context in which expression should operate.
+
+<b>Signature:</b>
+
+```typescript
+search?: ExecutionContextSearch;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.types.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.types.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.types.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionContext](./kibana-plugin-plugins-expressions-public.executioncontext.md) &gt; [types](./kibana-plugin-plugins-expressions-public.executioncontext.types.md)
+
+## ExecutionContext.types property
+
+A map of available expression types.
+
+<b>Signature:</b>
+
+```typescript
+types: Record<string, ExpressionType>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.variables.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.variables.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontext.variables.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionContext](./kibana-plugin-plugins-expressions-public.executioncontext.md) &gt; [variables](./kibana-plugin-plugins-expressions-public.executioncontext.variables.md)
+
+## ExecutionContext.variables property
+
+Context variables that can be consumed using `var` and `var_set` functions.
+
+<b>Signature:</b>
+
+```typescript
+variables: Record<string, unknown>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract._constructor_.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract._constructor_.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract._constructor_.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionContract](./kibana-plugin-plugins-expressions-public.executioncontract.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-public.executioncontract._constructor_.md)
+
+## ExecutionContract.(constructor)
+
+Constructs a new instance of the `ExecutionContract` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(execution: Execution<ExtraContext, Input, Output, InspectorAdapters>);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  execution | <code>Execution&lt;ExtraContext, Input, Output, InspectorAdapters&gt;</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.cancel.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.cancel.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.cancel.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionContract](./kibana-plugin-plugins-expressions-public.executioncontract.md) &gt; [cancel](./kibana-plugin-plugins-expressions-public.executioncontract.cancel.md)
+
+## ExecutionContract.cancel property
+
+Cancel the execution of the expression. This will set abort signal (available in execution context) to aborted state, letting expression functions to stop their execution.
+
+<b>Signature:</b>
+
+```typescript
+cancel: () => void;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.execution.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.execution.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.execution.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionContract](./kibana-plugin-plugins-expressions-public.executioncontract.md) &gt; [execution](./kibana-plugin-plugins-expressions-public.executioncontract.execution.md)
+
+## ExecutionContract.execution property
+
+<b>Signature:</b>
+
+```typescript
+protected readonly execution: Execution<ExtraContext, Input, Output, InspectorAdapters>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.getast.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.getast.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.getast.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionContract](./kibana-plugin-plugins-expressions-public.executioncontract.md) &gt; [getAst](./kibana-plugin-plugins-expressions-public.executioncontract.getast.md)
+
+## ExecutionContract.getAst property
+
+Get AST used to execute the expression.
+
+<b>Signature:</b>
+
+```typescript
+getAst: () => ExpressionAstExpression;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.getdata.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.getdata.md
new file mode 100644
index 0000000000000..dcd96cf5767bf
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.getdata.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionContract](./kibana-plugin-plugins-expressions-public.executioncontract.md) &gt; [getData](./kibana-plugin-plugins-expressions-public.executioncontract.getdata.md)
+
+## ExecutionContract.getData property
+
+Returns the final output of expression, if any error happens still wraps that error into `ExpressionValueError` type and returns that. This function never throws.
+
+<b>Signature:</b>
+
+```typescript
+getData: () => Promise<Output | ExpressionValueError>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.getexpression.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.getexpression.md
new file mode 100644
index 0000000000000..41dbe72fa69b2
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.getexpression.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionContract](./kibana-plugin-plugins-expressions-public.executioncontract.md) &gt; [getExpression](./kibana-plugin-plugins-expressions-public.executioncontract.getexpression.md)
+
+## ExecutionContract.getExpression property
+
+Get string representation of the expression. Returns the original string if execution was started from a string. If execution was started from an AST this method returns a string generated from AST.
+
+<b>Signature:</b>
+
+```typescript
+getExpression: () => string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.inspect.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.inspect.md
new file mode 100644
index 0000000000000..d5202b02b0dfd
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.inspect.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionContract](./kibana-plugin-plugins-expressions-public.executioncontract.md) &gt; [inspect](./kibana-plugin-plugins-expressions-public.executioncontract.inspect.md)
+
+## ExecutionContract.inspect property
+
+Get Inspector adapters provided to all functions of expression through execution context.
+
+<b>Signature:</b>
+
+```typescript
+inspect: () => InspectorAdapters;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.ispending.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.ispending.md
new file mode 100644
index 0000000000000..409c31b3fbc2c
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.ispending.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionContract](./kibana-plugin-plugins-expressions-public.executioncontract.md) &gt; [isPending](./kibana-plugin-plugins-expressions-public.executioncontract.ispending.md)
+
+## ExecutionContract.isPending property
+
+<b>Signature:</b>
+
+```typescript
+get isPending(): boolean;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.md
new file mode 100644
index 0000000000000..d05620eace208
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executioncontract.md
@@ -0,0 +1,32 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionContract](./kibana-plugin-plugins-expressions-public.executioncontract.md)
+
+## ExecutionContract class
+
+`ExecutionContract` is a wrapper around `Execution` class. It provides the same functionality but does not expose Expressions plugin internals.
+
+<b>Signature:</b>
+
+```typescript
+export declare class ExecutionContract<ExtraContext extends Record<string, unknown> = Record<string, unknown>, Input = unknown, Output = unknown, InspectorAdapters = unknown> 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(execution)](./kibana-plugin-plugins-expressions-public.executioncontract._constructor_.md) |  | Constructs a new instance of the <code>ExecutionContract</code> class |
+
+## Properties
+
+|  Property | Modifiers | Type | Description |
+|  --- | --- | --- | --- |
+|  [cancel](./kibana-plugin-plugins-expressions-public.executioncontract.cancel.md) |  | <code>() =&gt; void</code> | Cancel the execution of the expression. This will set abort signal (available in execution context) to aborted state, letting expression functions to stop their execution. |
+|  [execution](./kibana-plugin-plugins-expressions-public.executioncontract.execution.md) |  | <code>Execution&lt;ExtraContext, Input, Output, InspectorAdapters&gt;</code> |  |
+|  [getAst](./kibana-plugin-plugins-expressions-public.executioncontract.getast.md) |  | <code>() =&gt; ExpressionAstExpression</code> | Get AST used to execute the expression. |
+|  [getData](./kibana-plugin-plugins-expressions-public.executioncontract.getdata.md) |  | <code>() =&gt; Promise&lt;Output &#124; ExpressionValueError&gt;</code> | Returns the final output of expression, if any error happens still wraps that error into <code>ExpressionValueError</code> type and returns that. This function never throws. |
+|  [getExpression](./kibana-plugin-plugins-expressions-public.executioncontract.getexpression.md) |  | <code>() =&gt; string</code> | Get string representation of the expression. Returns the original string if execution was started from a string. If execution was started from an AST this method returns a string generated from AST. |
+|  [inspect](./kibana-plugin-plugins-expressions-public.executioncontract.inspect.md) |  | <code>() =&gt; InspectorAdapters</code> | Get Inspector adapters provided to all functions of expression through execution context. |
+|  [isPending](./kibana-plugin-plugins-expressions-public.executioncontract.ispending.md) |  | <code>boolean</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionparams.ast.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionparams.ast.md
new file mode 100644
index 0000000000000..63487bc4c753e
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionparams.ast.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionParams](./kibana-plugin-plugins-expressions-public.executionparams.md) &gt; [ast](./kibana-plugin-plugins-expressions-public.executionparams.ast.md)
+
+## ExecutionParams.ast property
+
+<b>Signature:</b>
+
+```typescript
+ast?: ExpressionAstExpression;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionparams.context.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionparams.context.md
new file mode 100644
index 0000000000000..b6013162ef2ae
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionparams.context.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionParams](./kibana-plugin-plugins-expressions-public.executionparams.md) &gt; [context](./kibana-plugin-plugins-expressions-public.executionparams.context.md)
+
+## ExecutionParams.context property
+
+<b>Signature:</b>
+
+```typescript
+context?: ExtraContext;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionparams.debug.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionparams.debug.md
new file mode 100644
index 0000000000000..61ec72465f55e
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionparams.debug.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionParams](./kibana-plugin-plugins-expressions-public.executionparams.md) &gt; [debug](./kibana-plugin-plugins-expressions-public.executionparams.debug.md)
+
+## ExecutionParams.debug property
+
+Whether to execute expression in \*debug mode\*. In \*debug mode\* inputs and outputs as well as all resolved arguments and time it took to execute each function are saved and are available for introspection.
+
+<b>Signature:</b>
+
+```typescript
+debug?: boolean;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionparams.executor.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionparams.executor.md
new file mode 100644
index 0000000000000..ec070842692fe
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionparams.executor.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionParams](./kibana-plugin-plugins-expressions-public.executionparams.md) &gt; [executor](./kibana-plugin-plugins-expressions-public.executionparams.executor.md)
+
+## ExecutionParams.executor property
+
+<b>Signature:</b>
+
+```typescript
+executor: Executor<any>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionparams.expression.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionparams.expression.md
new file mode 100644
index 0000000000000..f79728bacd336
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionparams.expression.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionParams](./kibana-plugin-plugins-expressions-public.executionparams.md) &gt; [expression](./kibana-plugin-plugins-expressions-public.executionparams.expression.md)
+
+## ExecutionParams.expression property
+
+<b>Signature:</b>
+
+```typescript
+expression?: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionparams.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionparams.md
new file mode 100644
index 0000000000000..e39dc231fbf96
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionparams.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionParams](./kibana-plugin-plugins-expressions-public.executionparams.md)
+
+## ExecutionParams interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExecutionParams<ExtraContext extends Record<string, unknown> = Record<string, unknown>> 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [ast](./kibana-plugin-plugins-expressions-public.executionparams.ast.md) | <code>ExpressionAstExpression</code> |  |
+|  [context](./kibana-plugin-plugins-expressions-public.executionparams.context.md) | <code>ExtraContext</code> |  |
+|  [debug](./kibana-plugin-plugins-expressions-public.executionparams.debug.md) | <code>boolean</code> | Whether to execute expression in \*debug mode\*. In \*debug mode\* inputs and outputs as well as all resolved arguments and time it took to execute each function are saved and are available for introspection. |
+|  [executor](./kibana-plugin-plugins-expressions-public.executionparams.executor.md) | <code>Executor&lt;any&gt;</code> |  |
+|  [expression](./kibana-plugin-plugins-expressions-public.executionparams.expression.md) | <code>string</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionstate.ast.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionstate.ast.md
new file mode 100644
index 0000000000000..bd77c959bde63
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionstate.ast.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionState](./kibana-plugin-plugins-expressions-public.executionstate.md) &gt; [ast](./kibana-plugin-plugins-expressions-public.executionstate.ast.md)
+
+## ExecutionState.ast property
+
+<b>Signature:</b>
+
+```typescript
+ast: ExpressionAstExpression;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionstate.error.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionstate.error.md
new file mode 100644
index 0000000000000..3ec804b3f0f2e
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionstate.error.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionState](./kibana-plugin-plugins-expressions-public.executionstate.md) &gt; [error](./kibana-plugin-plugins-expressions-public.executionstate.error.md)
+
+## ExecutionState.error property
+
+Error happened during the execution.
+
+<b>Signature:</b>
+
+```typescript
+error?: Error;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionstate.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionstate.md
new file mode 100644
index 0000000000000..a7848a65fb94b
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionstate.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionState](./kibana-plugin-plugins-expressions-public.executionstate.md)
+
+## ExecutionState interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExecutionState<Output = ExpressionValue> extends ExecutorState 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [ast](./kibana-plugin-plugins-expressions-public.executionstate.ast.md) | <code>ExpressionAstExpression</code> |  |
+|  [error](./kibana-plugin-plugins-expressions-public.executionstate.error.md) | <code>Error</code> | Error happened during the execution. |
+|  [result](./kibana-plugin-plugins-expressions-public.executionstate.result.md) | <code>Output</code> | Result of the expression execution. |
+|  [state](./kibana-plugin-plugins-expressions-public.executionstate.state.md) | <code>'not-started' &#124; 'pending' &#124; 'result' &#124; 'error'</code> | Tracks state of execution.<!-- -->- <code>not-started</code> - before .start() method was called. - <code>pending</code> - immediately after .start() method is called. - <code>result</code> - when expression execution completed. - <code>error</code> - when execution failed with error. |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionstate.result.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionstate.result.md
new file mode 100644
index 0000000000000..571f95211b8bf
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionstate.result.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionState](./kibana-plugin-plugins-expressions-public.executionstate.md) &gt; [result](./kibana-plugin-plugins-expressions-public.executionstate.result.md)
+
+## ExecutionState.result property
+
+Result of the expression execution.
+
+<b>Signature:</b>
+
+```typescript
+result?: Output;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionstate.state.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionstate.state.md
new file mode 100644
index 0000000000000..9b6403590e60b
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executionstate.state.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutionState](./kibana-plugin-plugins-expressions-public.executionstate.md) &gt; [state](./kibana-plugin-plugins-expressions-public.executionstate.state.md)
+
+## ExecutionState.state property
+
+Tracks state of execution.
+
+- `not-started` - before .start() method was called. - `pending` - immediately after .start() method is called. - `result` - when expression execution completed. - `error` - when execution failed with error.
+
+<b>Signature:</b>
+
+```typescript
+state: 'not-started' | 'pending' | 'result' | 'error';
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor._constructor_.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor._constructor_.md
new file mode 100644
index 0000000000000..2d776c9536c82
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor._constructor_.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Executor](./kibana-plugin-plugins-expressions-public.executor.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-public.executor._constructor_.md)
+
+## Executor.(constructor)
+
+Constructs a new instance of the `Executor` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(state?: ExecutorState<Context>);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  state | <code>ExecutorState&lt;Context&gt;</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.context.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.context.md
new file mode 100644
index 0000000000000..9a35931bbb26b
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.context.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Executor](./kibana-plugin-plugins-expressions-public.executor.md) &gt; [context](./kibana-plugin-plugins-expressions-public.executor.context.md)
+
+## Executor.context property
+
+<b>Signature:</b>
+
+```typescript
+get context(): Record<string, unknown>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.createexecution.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.createexecution.md
new file mode 100644
index 0000000000000..e6765064d4a27
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.createexecution.md
@@ -0,0 +1,24 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Executor](./kibana-plugin-plugins-expressions-public.executor.md) &gt; [createExecution](./kibana-plugin-plugins-expressions-public.executor.createexecution.md)
+
+## Executor.createExecution() method
+
+<b>Signature:</b>
+
+```typescript
+createExecution<ExtraContext extends Record<string, unknown> = Record<string, unknown>, Input = unknown, Output = unknown>(ast: string | ExpressionAstExpression, context?: ExtraContext, { debug }?: ExpressionExecOptions): Execution<Context & ExtraContext, Input, Output>;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  ast | <code>string &#124; ExpressionAstExpression</code> |  |
+|  context | <code>ExtraContext</code> |  |
+|  { debug } | <code>ExpressionExecOptions</code> |  |
+
+<b>Returns:</b>
+
+`Execution<Context & ExtraContext, Input, Output>`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.createwithdefaults.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.createwithdefaults.md
new file mode 100644
index 0000000000000..a058d1c9f830e
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.createwithdefaults.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Executor](./kibana-plugin-plugins-expressions-public.executor.md) &gt; [createWithDefaults](./kibana-plugin-plugins-expressions-public.executor.createwithdefaults.md)
+
+## Executor.createWithDefaults() method
+
+<b>Signature:</b>
+
+```typescript
+static createWithDefaults<Ctx extends Record<string, unknown> = Record<string, unknown>>(state?: ExecutorState<Ctx>): Executor<Ctx>;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  state | <code>ExecutorState&lt;Ctx&gt;</code> |  |
+
+<b>Returns:</b>
+
+`Executor<Ctx>`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.extendcontext.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.extendcontext.md
new file mode 100644
index 0000000000000..a08fcc839110d
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.extendcontext.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Executor](./kibana-plugin-plugins-expressions-public.executor.md) &gt; [extendContext](./kibana-plugin-plugins-expressions-public.executor.extendcontext.md)
+
+## Executor.extendContext() method
+
+<b>Signature:</b>
+
+```typescript
+extendContext(extraContext: Record<string, unknown>): void;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  extraContext | <code>Record&lt;string, unknown&gt;</code> |  |
+
+<b>Returns:</b>
+
+`void`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.fork.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.fork.md
new file mode 100644
index 0000000000000..65aa7978a5910
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.fork.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Executor](./kibana-plugin-plugins-expressions-public.executor.md) &gt; [fork](./kibana-plugin-plugins-expressions-public.executor.fork.md)
+
+## Executor.fork() method
+
+<b>Signature:</b>
+
+```typescript
+fork(): Executor<Context>;
+```
+<b>Returns:</b>
+
+`Executor<Context>`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.functions.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.functions.md
new file mode 100644
index 0000000000000..3c55c246c91f8
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.functions.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Executor](./kibana-plugin-plugins-expressions-public.executor.md) &gt; [functions](./kibana-plugin-plugins-expressions-public.executor.functions.md)
+
+## Executor.functions property
+
+> Warning: This API is now obsolete.
+> 
+> 
+
+<b>Signature:</b>
+
+```typescript
+readonly functions: FunctionsRegistry;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.getfunction.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.getfunction.md
new file mode 100644
index 0000000000000..11d04edc9c97d
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.getfunction.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Executor](./kibana-plugin-plugins-expressions-public.executor.md) &gt; [getFunction](./kibana-plugin-plugins-expressions-public.executor.getfunction.md)
+
+## Executor.getFunction() method
+
+<b>Signature:</b>
+
+```typescript
+getFunction(name: string): ExpressionFunction | undefined;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  name | <code>string</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionFunction | undefined`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.getfunctions.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.getfunctions.md
new file mode 100644
index 0000000000000..1098c867e4c86
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.getfunctions.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Executor](./kibana-plugin-plugins-expressions-public.executor.md) &gt; [getFunctions](./kibana-plugin-plugins-expressions-public.executor.getfunctions.md)
+
+## Executor.getFunctions() method
+
+<b>Signature:</b>
+
+```typescript
+getFunctions(): Record<string, ExpressionFunction>;
+```
+<b>Returns:</b>
+
+`Record<string, ExpressionFunction>`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.gettype.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.gettype.md
new file mode 100644
index 0000000000000..a0dc6deb21d2c
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.gettype.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Executor](./kibana-plugin-plugins-expressions-public.executor.md) &gt; [getType](./kibana-plugin-plugins-expressions-public.executor.gettype.md)
+
+## Executor.getType() method
+
+<b>Signature:</b>
+
+```typescript
+getType(name: string): ExpressionType | undefined;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  name | <code>string</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionType | undefined`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.gettypes.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.gettypes.md
new file mode 100644
index 0000000000000..a3c72b135cd31
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.gettypes.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Executor](./kibana-plugin-plugins-expressions-public.executor.md) &gt; [getTypes](./kibana-plugin-plugins-expressions-public.executor.gettypes.md)
+
+## Executor.getTypes() method
+
+<b>Signature:</b>
+
+```typescript
+getTypes(): Record<string, ExpressionType>;
+```
+<b>Returns:</b>
+
+`Record<string, ExpressionType>`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.md
new file mode 100644
index 0000000000000..b71c8c79c068f
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.md
@@ -0,0 +1,43 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Executor](./kibana-plugin-plugins-expressions-public.executor.md)
+
+## Executor class
+
+<b>Signature:</b>
+
+```typescript
+export declare class Executor<Context extends Record<string, unknown> = Record<string, unknown>> 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(state)](./kibana-plugin-plugins-expressions-public.executor._constructor_.md) |  | Constructs a new instance of the <code>Executor</code> class |
+
+## Properties
+
+|  Property | Modifiers | Type | Description |
+|  --- | --- | --- | --- |
+|  [context](./kibana-plugin-plugins-expressions-public.executor.context.md) |  | <code>Record&lt;string, unknown&gt;</code> |  |
+|  [functions](./kibana-plugin-plugins-expressions-public.executor.functions.md) |  | <code>FunctionsRegistry</code> |  |
+|  [state](./kibana-plugin-plugins-expressions-public.executor.state.md) |  | <code>ExecutorContainer&lt;Context&gt;</code> |  |
+|  [types](./kibana-plugin-plugins-expressions-public.executor.types.md) |  | <code>TypesRegistry</code> |  |
+
+## Methods
+
+|  Method | Modifiers | Description |
+|  --- | --- | --- |
+|  [createExecution(ast, context, { debug })](./kibana-plugin-plugins-expressions-public.executor.createexecution.md) |  |  |
+|  [createWithDefaults(state)](./kibana-plugin-plugins-expressions-public.executor.createwithdefaults.md) | <code>static</code> |  |
+|  [extendContext(extraContext)](./kibana-plugin-plugins-expressions-public.executor.extendcontext.md) |  |  |
+|  [fork()](./kibana-plugin-plugins-expressions-public.executor.fork.md) |  |  |
+|  [getFunction(name)](./kibana-plugin-plugins-expressions-public.executor.getfunction.md) |  |  |
+|  [getFunctions()](./kibana-plugin-plugins-expressions-public.executor.getfunctions.md) |  |  |
+|  [getType(name)](./kibana-plugin-plugins-expressions-public.executor.gettype.md) |  |  |
+|  [getTypes()](./kibana-plugin-plugins-expressions-public.executor.gettypes.md) |  |  |
+|  [registerFunction(functionDefinition)](./kibana-plugin-plugins-expressions-public.executor.registerfunction.md) |  |  |
+|  [registerType(typeDefinition)](./kibana-plugin-plugins-expressions-public.executor.registertype.md) |  |  |
+|  [run(ast, input, context)](./kibana-plugin-plugins-expressions-public.executor.run.md) |  | Execute expression and return result. |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.registerfunction.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.registerfunction.md
new file mode 100644
index 0000000000000..b4217fa492a20
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.registerfunction.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Executor](./kibana-plugin-plugins-expressions-public.executor.md) &gt; [registerFunction](./kibana-plugin-plugins-expressions-public.executor.registerfunction.md)
+
+## Executor.registerFunction() method
+
+<b>Signature:</b>
+
+```typescript
+registerFunction(functionDefinition: AnyExpressionFunctionDefinition | (() => AnyExpressionFunctionDefinition)): void;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  functionDefinition | <code>AnyExpressionFunctionDefinition &#124; (() =&gt; AnyExpressionFunctionDefinition)</code> |  |
+
+<b>Returns:</b>
+
+`void`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.registertype.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.registertype.md
new file mode 100644
index 0000000000000..f56e5ffcfb9ee
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.registertype.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Executor](./kibana-plugin-plugins-expressions-public.executor.md) &gt; [registerType](./kibana-plugin-plugins-expressions-public.executor.registertype.md)
+
+## Executor.registerType() method
+
+<b>Signature:</b>
+
+```typescript
+registerType(typeDefinition: AnyExpressionTypeDefinition | (() => AnyExpressionTypeDefinition)): void;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  typeDefinition | <code>AnyExpressionTypeDefinition &#124; (() =&gt; AnyExpressionTypeDefinition)</code> |  |
+
+<b>Returns:</b>
+
+`void`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.run.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.run.md
new file mode 100644
index 0000000000000..e06ce733acd43
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.run.md
@@ -0,0 +1,26 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Executor](./kibana-plugin-plugins-expressions-public.executor.md) &gt; [run](./kibana-plugin-plugins-expressions-public.executor.run.md)
+
+## Executor.run() method
+
+Execute expression and return result.
+
+<b>Signature:</b>
+
+```typescript
+run<Input, Output, ExtraContext extends Record<string, unknown> = Record<string, unknown>>(ast: string | ExpressionAstExpression, input: Input, context?: ExtraContext): Promise<Output>;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  ast | <code>string &#124; ExpressionAstExpression</code> |  |
+|  input | <code>Input</code> |  |
+|  context | <code>ExtraContext</code> |  |
+
+<b>Returns:</b>
+
+`Promise<Output>`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.state.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.state.md
new file mode 100644
index 0000000000000..e9b7006980ceb
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.state.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Executor](./kibana-plugin-plugins-expressions-public.executor.md) &gt; [state](./kibana-plugin-plugins-expressions-public.executor.state.md)
+
+## Executor.state property
+
+<b>Signature:</b>
+
+```typescript
+readonly state: ExecutorContainer<Context>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.types.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.types.md
new file mode 100644
index 0000000000000..1ab9a5c4621be
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executor.types.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Executor](./kibana-plugin-plugins-expressions-public.executor.md) &gt; [types](./kibana-plugin-plugins-expressions-public.executor.types.md)
+
+## Executor.types property
+
+> Warning: This API is now obsolete.
+> 
+> 
+
+<b>Signature:</b>
+
+```typescript
+readonly types: TypesRegistry;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executorcontainer.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executorcontainer.md
new file mode 100644
index 0000000000000..f48b001593f94
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executorcontainer.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutorContainer](./kibana-plugin-plugins-expressions-public.executorcontainer.md)
+
+## ExecutorContainer type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExecutorContainer<Context extends Record<string, unknown> = Record<string, unknown>> = StateContainer<ExecutorState<Context>, ExecutorPureTransitions, ExecutorPureSelectors>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executorstate.context.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executorstate.context.md
new file mode 100644
index 0000000000000..d52074b0eecdd
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executorstate.context.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutorState](./kibana-plugin-plugins-expressions-public.executorstate.md) &gt; [context](./kibana-plugin-plugins-expressions-public.executorstate.context.md)
+
+## ExecutorState.context property
+
+<b>Signature:</b>
+
+```typescript
+context: Context;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executorstate.functions.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executorstate.functions.md
new file mode 100644
index 0000000000000..034caf27aaef7
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executorstate.functions.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutorState](./kibana-plugin-plugins-expressions-public.executorstate.md) &gt; [functions](./kibana-plugin-plugins-expressions-public.executorstate.functions.md)
+
+## ExecutorState.functions property
+
+<b>Signature:</b>
+
+```typescript
+functions: Record<string, ExpressionFunction>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executorstate.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executorstate.md
new file mode 100644
index 0000000000000..e120631285887
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executorstate.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutorState](./kibana-plugin-plugins-expressions-public.executorstate.md)
+
+## ExecutorState interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExecutorState<Context extends Record<string, unknown> = Record<string, unknown>> 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [context](./kibana-plugin-plugins-expressions-public.executorstate.context.md) | <code>Context</code> |  |
+|  [functions](./kibana-plugin-plugins-expressions-public.executorstate.functions.md) | <code>Record&lt;string, ExpressionFunction&gt;</code> |  |
+|  [types](./kibana-plugin-plugins-expressions-public.executorstate.types.md) | <code>Record&lt;string, ExpressionType&gt;</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executorstate.types.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executorstate.types.md
new file mode 100644
index 0000000000000..00cf80c271684
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.executorstate.types.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExecutorState](./kibana-plugin-plugins-expressions-public.executorstate.md) &gt; [types](./kibana-plugin-plugins-expressions-public.executorstate.types.md)
+
+## ExecutorState.types property
+
+<b>Signature:</b>
+
+```typescript
+types: Record<string, ExpressionType>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastargument.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastargument.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastargument.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstArgument](./kibana-plugin-plugins-expressions-public.expressionastargument.md)
+
+## ExpressionAstArgument type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionAstArgument = string | boolean | number | ExpressionAstExpression;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpression.chain.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpression.chain.md
new file mode 100644
index 0000000000000..b50ac83036ffe
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpression.chain.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstExpression](./kibana-plugin-plugins-expressions-public.expressionastexpression.md) &gt; [chain](./kibana-plugin-plugins-expressions-public.expressionastexpression.chain.md)
+
+## ExpressionAstExpression.chain property
+
+<b>Signature:</b>
+
+```typescript
+chain: ExpressionAstFunction[];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpression.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpression.md
new file mode 100644
index 0000000000000..537659c51dce8
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpression.md
@@ -0,0 +1,19 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstExpression](./kibana-plugin-plugins-expressions-public.expressionastexpression.md)
+
+## ExpressionAstExpression interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionAstExpression 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [chain](./kibana-plugin-plugins-expressions-public.expressionastexpression.chain.md) | <code>ExpressionAstFunction[]</code> |  |
+|  [type](./kibana-plugin-plugins-expressions-public.expressionastexpression.type.md) | <code>'expression'</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpression.type.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpression.type.md
new file mode 100644
index 0000000000000..34a86e235a911
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpression.type.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstExpression](./kibana-plugin-plugins-expressions-public.expressionastexpression.md) &gt; [type](./kibana-plugin-plugins-expressions-public.expressionastexpression.type.md)
+
+## ExpressionAstExpression.type property
+
+<b>Signature:</b>
+
+```typescript
+type: 'expression';
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.findfunction.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.findfunction.md
new file mode 100644
index 0000000000000..d31f04ad5bf77
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.findfunction.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstExpressionBuilder](./kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.md) &gt; [findFunction](./kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.findfunction.md)
+
+## ExpressionAstExpressionBuilder.findFunction property
+
+Recursively searches expression for all ocurrences of the function, including in subexpressions.
+
+Useful when performing migrations on a specific function, as you can iterate over the array of references and update all functions at once.
+
+<b>Signature:</b>
+
+```typescript
+findFunction: <FnDef extends AnyExpressionFunctionDefinition = AnyExpressionFunctionDefinition>(fnName: InferFunctionDefinition<FnDef>['name']) => Array<ExpressionAstFunctionBuilder<FnDef>> | [];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.functions.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.functions.md
new file mode 100644
index 0000000000000..ceaa4c89fb237
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.functions.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstExpressionBuilder](./kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.md) &gt; [functions](./kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.functions.md)
+
+## ExpressionAstExpressionBuilder.functions property
+
+Array of each of the `buildExpressionFunction()` instances in this expression. Use this to remove or reorder functions in the expression.
+
+<b>Signature:</b>
+
+```typescript
+functions: ExpressionAstFunctionBuilder[];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.md
new file mode 100644
index 0000000000000..079e0b3dd8ac1
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstExpressionBuilder](./kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.md)
+
+## ExpressionAstExpressionBuilder interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionAstExpressionBuilder 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [findFunction](./kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.findfunction.md) | <code>&lt;FnDef extends AnyExpressionFunctionDefinition = AnyExpressionFunctionDefinition&gt;(fnName: InferFunctionDefinition&lt;FnDef&gt;['name']) =&gt; Array&lt;ExpressionAstFunctionBuilder&lt;FnDef&gt;&gt; &#124; []</code> | Recursively searches expression for all ocurrences of the function, including in subexpressions.<!-- -->Useful when performing migrations on a specific function, as you can iterate over the array of references and update all functions at once. |
+|  [functions](./kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.functions.md) | <code>ExpressionAstFunctionBuilder[]</code> | Array of each of the <code>buildExpressionFunction()</code> instances in this expression. Use this to remove or reorder functions in the expression. |
+|  [toAst](./kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.toast.md) | <code>() =&gt; ExpressionAstExpression</code> | Converts expression to an AST. <code>ExpressionAstExpression</code> |
+|  [toString](./kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.tostring.md) | <code>() =&gt; string</code> | Converts expression to an expression string. <code>string</code> |
+|  [type](./kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.type.md) | <code>'expression_builder'</code> | Used to identify expression builder objects. |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.toast.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.toast.md
new file mode 100644
index 0000000000000..e0b10033f6f3a
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.toast.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstExpressionBuilder](./kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.md) &gt; [toAst](./kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.toast.md)
+
+## ExpressionAstExpressionBuilder.toAst property
+
+Converts expression to an AST.
+
+ `ExpressionAstExpression`
+
+<b>Signature:</b>
+
+```typescript
+toAst: () => ExpressionAstExpression;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.tostring.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.tostring.md
new file mode 100644
index 0000000000000..6a9a25256c0a3
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.tostring.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstExpressionBuilder](./kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.md) &gt; [toString](./kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.tostring.md)
+
+## ExpressionAstExpressionBuilder.toString property
+
+Converts expression to an expression string.
+
+ `string`
+
+<b>Signature:</b>
+
+```typescript
+toString: () => string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.type.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.type.md
new file mode 100644
index 0000000000000..2aa8d5089aa29
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.type.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstExpressionBuilder](./kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.md) &gt; [type](./kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.type.md)
+
+## ExpressionAstExpressionBuilder.type property
+
+Used to identify expression builder objects.
+
+<b>Signature:</b>
+
+```typescript
+type: 'expression_builder';
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunction.arguments.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunction.arguments.md
new file mode 100644
index 0000000000000..72b44e8319542
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunction.arguments.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstFunction](./kibana-plugin-plugins-expressions-public.expressionastfunction.md) &gt; [arguments](./kibana-plugin-plugins-expressions-public.expressionastfunction.arguments.md)
+
+## ExpressionAstFunction.arguments property
+
+<b>Signature:</b>
+
+```typescript
+arguments: Record<string, ExpressionAstArgument[]>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunction.debug.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunction.debug.md
new file mode 100644
index 0000000000000..36101a110979a
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunction.debug.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstFunction](./kibana-plugin-plugins-expressions-public.expressionastfunction.md) &gt; [debug](./kibana-plugin-plugins-expressions-public.expressionastfunction.debug.md)
+
+## ExpressionAstFunction.debug property
+
+Debug information added to each function when expression is executed in \*debug mode\*.
+
+<b>Signature:</b>
+
+```typescript
+debug?: ExpressionAstFunctionDebug;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunction.function.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunction.function.md
new file mode 100644
index 0000000000000..1840fff4b625f
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunction.function.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstFunction](./kibana-plugin-plugins-expressions-public.expressionastfunction.md) &gt; [function](./kibana-plugin-plugins-expressions-public.expressionastfunction.function.md)
+
+## ExpressionAstFunction.function property
+
+<b>Signature:</b>
+
+```typescript
+function: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunction.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunction.md
new file mode 100644
index 0000000000000..1004e58759806
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunction.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstFunction](./kibana-plugin-plugins-expressions-public.expressionastfunction.md)
+
+## ExpressionAstFunction interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionAstFunction 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [arguments](./kibana-plugin-plugins-expressions-public.expressionastfunction.arguments.md) | <code>Record&lt;string, ExpressionAstArgument[]&gt;</code> |  |
+|  [debug](./kibana-plugin-plugins-expressions-public.expressionastfunction.debug.md) | <code>ExpressionAstFunctionDebug</code> | Debug information added to each function when expression is executed in \*debug mode\*. |
+|  [function](./kibana-plugin-plugins-expressions-public.expressionastfunction.function.md) | <code>string</code> |  |
+|  [type](./kibana-plugin-plugins-expressions-public.expressionastfunction.type.md) | <code>'function'</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunction.type.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunction.type.md
new file mode 100644
index 0000000000000..f7f8786430191
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunction.type.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstFunction](./kibana-plugin-plugins-expressions-public.expressionastfunction.md) &gt; [type](./kibana-plugin-plugins-expressions-public.expressionastfunction.type.md)
+
+## ExpressionAstFunction.type property
+
+<b>Signature:</b>
+
+```typescript
+type: 'function';
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.addargument.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.addargument.md
new file mode 100644
index 0000000000000..da7f0ebc826c1
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.addargument.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.md) &gt; [addArgument](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.addargument.md)
+
+## ExpressionAstFunctionBuilder.addArgument property
+
+Adds an additional argument to the function. For multi-args, this should be called once for each new arg. Note that TS will not enforce whether multi-args are available, so only use this to update an existing arg if you are certain it is a multi-arg.
+
+<b>Signature:</b>
+
+```typescript
+addArgument: <A extends FunctionArgName<FnDef>>(name: A, value: FunctionArgs<FnDef>[A] | ExpressionAstExpressionBuilder) => this;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.arguments.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.arguments.md
new file mode 100644
index 0000000000000..4a95d20d6c983
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.arguments.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.md) &gt; [arguments](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.arguments.md)
+
+## ExpressionAstFunctionBuilder.arguments property
+
+Object of all args currently added to the function. This is structured similarly to `ExpressionAstFunction['arguments']`<!-- -->, however any subexpressions are returned as expression builder instances instead of expression ASTs.
+
+<b>Signature:</b>
+
+```typescript
+arguments: FunctionBuilderArguments<FnDef>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.getargument.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.getargument.md
new file mode 100644
index 0000000000000..0df9c80c632b1
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.getargument.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.md) &gt; [getArgument](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.getargument.md)
+
+## ExpressionAstFunctionBuilder.getArgument property
+
+Retrieves an existing argument by name. Useful when you want to retrieve the current array of args and add something to it before calling `replaceArgument`<!-- -->. Any subexpression arguments will be returned as expression builder instances.
+
+<b>Signature:</b>
+
+```typescript
+getArgument: <A extends FunctionArgName<FnDef>>(name: A) => Array<FunctionArgs<FnDef>[A] | ExpressionAstExpressionBuilder> | undefined;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.md
@@ -0,0 +1,26 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.md)
+
+## ExpressionAstFunctionBuilder interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionAstFunctionBuilder<FnDef extends AnyExpressionFunctionDefinition = AnyExpressionFunctionDefinition> 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [addArgument](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.addargument.md) | <code>&lt;A extends FunctionArgName&lt;FnDef&gt;&gt;(name: A, value: FunctionArgs&lt;FnDef&gt;[A] &#124; ExpressionAstExpressionBuilder) =&gt; this</code> | Adds an additional argument to the function. For multi-args, this should be called once for each new arg. Note that TS will not enforce whether multi-args are available, so only use this to update an existing arg if you are certain it is a multi-arg. |
+|  [arguments](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.arguments.md) | <code>FunctionBuilderArguments&lt;FnDef&gt;</code> | Object of all args currently added to the function. This is structured similarly to <code>ExpressionAstFunction['arguments']</code>, however any subexpressions are returned as expression builder instances instead of expression ASTs. |
+|  [getArgument](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.getargument.md) | <code>&lt;A extends FunctionArgName&lt;FnDef&gt;&gt;(name: A) =&gt; Array&lt;FunctionArgs&lt;FnDef&gt;[A] &#124; ExpressionAstExpressionBuilder&gt; &#124; undefined</code> | Retrieves an existing argument by name. Useful when you want to retrieve the current array of args and add something to it before calling <code>replaceArgument</code>. Any subexpression arguments will be returned as expression builder instances. |
+|  [name](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.name.md) | <code>InferFunctionDefinition&lt;FnDef&gt;['name']</code> | Name of this expression function. |
+|  [removeArgument](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.removeargument.md) | <code>&lt;A extends OptionalKeys&lt;FunctionArgs&lt;FnDef&gt;&gt;&gt;(name: A) =&gt; this</code> | Removes an (optional) argument from the function.<!-- -->TypeScript will enforce that you only remove optional arguments. For manipulating required args, use <code>replaceArgument</code>. |
+|  [replaceArgument](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.replaceargument.md) | <code>&lt;A extends FunctionArgName&lt;FnDef&gt;&gt;(name: A, value: Array&lt;FunctionArgs&lt;FnDef&gt;[A] &#124; ExpressionAstExpressionBuilder&gt;) =&gt; this</code> | Overwrites an existing argument with a new value. In order to support multi-args, the value given must always be an array. |
+|  [toAst](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.toast.md) | <code>() =&gt; ExpressionAstFunction</code> | Converts function to an AST. <code>ExpressionAstFunction</code> |
+|  [toString](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.tostring.md) | <code>() =&gt; string</code> | Converts function to an expression string. <code>string</code> |
+|  [type](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.type.md) | <code>'expression_function_builder'</code> | Used to identify expression function builder objects. |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.name.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.name.md
new file mode 100644
index 0000000000000..5bcf965426dbd
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.name.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.md) &gt; [name](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.name.md)
+
+## ExpressionAstFunctionBuilder.name property
+
+Name of this expression function.
+
+<b>Signature:</b>
+
+```typescript
+name: InferFunctionDefinition<FnDef>['name'];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.removeargument.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.removeargument.md
new file mode 100644
index 0000000000000..1883618c96d53
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.removeargument.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.md) &gt; [removeArgument](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.removeargument.md)
+
+## ExpressionAstFunctionBuilder.removeArgument property
+
+Removes an (optional) argument from the function.
+
+TypeScript will enforce that you only remove optional arguments. For manipulating required args, use `replaceArgument`<!-- -->.
+
+<b>Signature:</b>
+
+```typescript
+removeArgument: <A extends OptionalKeys<FunctionArgs<FnDef>>>(name: A) => this;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.replaceargument.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.replaceargument.md
new file mode 100644
index 0000000000000..81709f6e94f0a
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.replaceargument.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.md) &gt; [replaceArgument](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.replaceargument.md)
+
+## ExpressionAstFunctionBuilder.replaceArgument property
+
+Overwrites an existing argument with a new value. In order to support multi-args, the value given must always be an array.
+
+<b>Signature:</b>
+
+```typescript
+replaceArgument: <A extends FunctionArgName<FnDef>>(name: A, value: Array<FunctionArgs<FnDef>[A] | ExpressionAstExpressionBuilder>) => this;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.toast.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.toast.md
new file mode 100644
index 0000000000000..bf79726c881ae
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.toast.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.md) &gt; [toAst](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.toast.md)
+
+## ExpressionAstFunctionBuilder.toAst property
+
+Converts function to an AST.
+
+ `ExpressionAstFunction`
+
+<b>Signature:</b>
+
+```typescript
+toAst: () => ExpressionAstFunction;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.tostring.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.tostring.md
new file mode 100644
index 0000000000000..5c8d0c806d372
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.tostring.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.md) &gt; [toString](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.tostring.md)
+
+## ExpressionAstFunctionBuilder.toString property
+
+Converts function to an expression string.
+
+ `string`
+
+<b>Signature:</b>
+
+```typescript
+toString: () => string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.type.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.type.md
new file mode 100644
index 0000000000000..b88876b14f367
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.type.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.md) &gt; [type](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.type.md)
+
+## ExpressionAstFunctionBuilder.type property
+
+Used to identify expression function builder objects.
+
+<b>Signature:</b>
+
+```typescript
+type: 'expression_function_builder';
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastnode.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastnode.md
new file mode 100644
index 0000000000000..4e05b6a18374c
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionastnode.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionAstNode](./kibana-plugin-plugins-expressions-public.expressionastnode.md)
+
+## ExpressionAstNode type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionAstNode = ExpressionAstExpression | ExpressionAstFunction | ExpressionAstArgument;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionexecutor.interpreter.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionexecutor.interpreter.md
new file mode 100644
index 0000000000000..6741634379dc1
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionexecutor.interpreter.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionExecutor](./kibana-plugin-plugins-expressions-public.expressionexecutor.md) &gt; [interpreter](./kibana-plugin-plugins-expressions-public.expressionexecutor.interpreter.md)
+
+## ExpressionExecutor.interpreter property
+
+<b>Signature:</b>
+
+```typescript
+interpreter: ExpressionInterpreter;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionexecutor.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionexecutor.md
new file mode 100644
index 0000000000000..f0c457af52d22
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionexecutor.md
@@ -0,0 +1,23 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionExecutor](./kibana-plugin-plugins-expressions-public.expressionexecutor.md)
+
+## ExpressionExecutor interface
+
+> Warning: This API is now obsolete.
+> 
+> This type if remainder from legacy platform, will be deleted going further.
+> 
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionExecutor 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [interpreter](./kibana-plugin-plugins-expressions-public.expressionexecutor.interpreter.md) | <code>ExpressionInterpreter</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction._constructor_.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction._constructor_.md
new file mode 100644
index 0000000000000..9c711b47c89d0
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction._constructor_.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-public.expressionfunction.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-public.expressionfunction._constructor_.md)
+
+## ExpressionFunction.(constructor)
+
+Constructs a new instance of the `ExpressionFunction` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(functionDefinition: AnyExpressionFunctionDefinition);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  functionDefinition | <code>AnyExpressionFunctionDefinition</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.accepts.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.accepts.md
new file mode 100644
index 0000000000000..7a65878cd5a2d
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.accepts.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-public.expressionfunction.md) &gt; [accepts](./kibana-plugin-plugins-expressions-public.expressionfunction.accepts.md)
+
+## ExpressionFunction.accepts property
+
+<b>Signature:</b>
+
+```typescript
+accepts: (type: string) => boolean;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.aliases.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.aliases.md
new file mode 100644
index 0000000000000..550620386a892
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.aliases.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-public.expressionfunction.md) &gt; [aliases](./kibana-plugin-plugins-expressions-public.expressionfunction.aliases.md)
+
+## ExpressionFunction.aliases property
+
+Aliases that can be used instead of `name`<!-- -->.
+
+<b>Signature:</b>
+
+```typescript
+aliases: string[];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.args.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.args.md
new file mode 100644
index 0000000000000..e14c08b8b7079
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.args.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-public.expressionfunction.md) &gt; [args](./kibana-plugin-plugins-expressions-public.expressionfunction.args.md)
+
+## ExpressionFunction.args property
+
+Specification of expression function parameters.
+
+<b>Signature:</b>
+
+```typescript
+args: Record<string, ExpressionFunctionParameter>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.fn.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.fn.md
new file mode 100644
index 0000000000000..d94d9af9bf0f9
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.fn.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-public.expressionfunction.md) &gt; [fn](./kibana-plugin-plugins-expressions-public.expressionfunction.fn.md)
+
+## ExpressionFunction.fn property
+
+Function to run function (context, args)
+
+<b>Signature:</b>
+
+```typescript
+fn: (input: ExpressionValue, params: Record<string, any>, handlers: object) => ExpressionValue;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.help.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.help.md
new file mode 100644
index 0000000000000..bbf70e11192eb
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.help.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-public.expressionfunction.md) &gt; [help](./kibana-plugin-plugins-expressions-public.expressionfunction.help.md)
+
+## ExpressionFunction.help property
+
+A short help text.
+
+<b>Signature:</b>
+
+```typescript
+help: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.inputtypes.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.inputtypes.md
new file mode 100644
index 0000000000000..865c856746062
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.inputtypes.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-public.expressionfunction.md) &gt; [inputTypes](./kibana-plugin-plugins-expressions-public.expressionfunction.inputtypes.md)
+
+## ExpressionFunction.inputTypes property
+
+Type of inputs that this function supports.
+
+<b>Signature:</b>
+
+```typescript
+inputTypes: string[] | undefined;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.md
new file mode 100644
index 0000000000000..5ca67e40c93ec
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.md
@@ -0,0 +1,31 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-public.expressionfunction.md)
+
+## ExpressionFunction class
+
+<b>Signature:</b>
+
+```typescript
+export declare class ExpressionFunction 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(functionDefinition)](./kibana-plugin-plugins-expressions-public.expressionfunction._constructor_.md) |  | Constructs a new instance of the <code>ExpressionFunction</code> class |
+
+## Properties
+
+|  Property | Modifiers | Type | Description |
+|  --- | --- | --- | --- |
+|  [accepts](./kibana-plugin-plugins-expressions-public.expressionfunction.accepts.md) |  | <code>(type: string) =&gt; boolean</code> |  |
+|  [aliases](./kibana-plugin-plugins-expressions-public.expressionfunction.aliases.md) |  | <code>string[]</code> | Aliases that can be used instead of <code>name</code>. |
+|  [args](./kibana-plugin-plugins-expressions-public.expressionfunction.args.md) |  | <code>Record&lt;string, ExpressionFunctionParameter&gt;</code> | Specification of expression function parameters. |
+|  [fn](./kibana-plugin-plugins-expressions-public.expressionfunction.fn.md) |  | <code>(input: ExpressionValue, params: Record&lt;string, any&gt;, handlers: object) =&gt; ExpressionValue</code> | Function to run function (context, args) |
+|  [help](./kibana-plugin-plugins-expressions-public.expressionfunction.help.md) |  | <code>string</code> | A short help text. |
+|  [inputTypes](./kibana-plugin-plugins-expressions-public.expressionfunction.inputtypes.md) |  | <code>string[] &#124; undefined</code> | Type of inputs that this function supports. |
+|  [name](./kibana-plugin-plugins-expressions-public.expressionfunction.name.md) |  | <code>string</code> | Name of function |
+|  [type](./kibana-plugin-plugins-expressions-public.expressionfunction.type.md) |  | <code>string</code> | Return type of function. This SHOULD be supplied. We use it for UI and autocomplete hinting. We may also use it for optimizations in the future. |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.name.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.name.md
new file mode 100644
index 0000000000000..2858089ea67de
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.name.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-public.expressionfunction.md) &gt; [name](./kibana-plugin-plugins-expressions-public.expressionfunction.name.md)
+
+## ExpressionFunction.name property
+
+Name of function
+
+<b>Signature:</b>
+
+```typescript
+name: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.type.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.type.md
new file mode 100644
index 0000000000000..7a7bc129a1719
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.type.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-public.expressionfunction.md) &gt; [type](./kibana-plugin-plugins-expressions-public.expressionfunction.type.md)
+
+## ExpressionFunction.type property
+
+Return type of function. This SHOULD be supplied. We use it for UI and autocomplete hinting. We may also use it for optimizations in the future.
+
+<b>Signature:</b>
+
+```typescript
+type: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.aliases.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.aliases.md
new file mode 100644
index 0000000000000..bca3600b6d416
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.aliases.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.md) &gt; [aliases](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.aliases.md)
+
+## ExpressionFunctionDefinition.aliases property
+
+ What is this?
+
+<b>Signature:</b>
+
+```typescript
+aliases?: string[];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.args.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.args.md
new file mode 100644
index 0000000000000..65ead35adf0d6
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.args.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.md) &gt; [args](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.args.md)
+
+## ExpressionFunctionDefinition.args property
+
+Specification of arguments that function supports. This list will also be used for autocomplete functionality when your function is being edited.
+
+<b>Signature:</b>
+
+```typescript
+args: {
+        [key in keyof Arguments]: ArgumentType<Arguments[key]>;
+    };
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.context.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.context.md
new file mode 100644
index 0000000000000..34bbfc7976007
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.context.md
@@ -0,0 +1,18 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.md) &gt; [context](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.context.md)
+
+## ExpressionFunctionDefinition.context property
+
+> Warning: This API is now obsolete.
+> 
+> Use `inputTypes` instead.
+> 
+
+<b>Signature:</b>
+
+```typescript
+context?: {
+        types: AnyExpressionFunctionDefinition['inputTypes'];
+    };
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.fn.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.fn.md
new file mode 100644
index 0000000000000..a2180c0cee665
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.fn.md
@@ -0,0 +1,26 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.md) &gt; [fn](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.fn.md)
+
+## ExpressionFunctionDefinition.fn() method
+
+The actual implementation of the function.
+
+<b>Signature:</b>
+
+```typescript
+fn(input: Input, args: Arguments, context: Context): Output;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  input | <code>Input</code> |  |
+|  args | <code>Arguments</code> |  |
+|  context | <code>Context</code> |  |
+
+<b>Returns:</b>
+
+`Output`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.help.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.help.md
new file mode 100644
index 0000000000000..ad99bb3a14a0b
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.help.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.md) &gt; [help](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.help.md)
+
+## ExpressionFunctionDefinition.help property
+
+Help text displayed in the Expression editor. This text should be internationalized.
+
+<b>Signature:</b>
+
+```typescript
+help: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.inputtypes.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.inputtypes.md
new file mode 100644
index 0000000000000..06c15dba514c2
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.inputtypes.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.md) &gt; [inputTypes](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.inputtypes.md)
+
+## ExpressionFunctionDefinition.inputTypes property
+
+List of allowed type names for input value of this function. If this property is set the input of function will be cast to the first possible type in this list. If this property is missing the input will be provided to the function as-is.
+
+<b>Signature:</b>
+
+```typescript
+inputTypes?: Array<TypeToString<Input>>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.md
new file mode 100644
index 0000000000000..bc801542f81ac
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.md
@@ -0,0 +1,32 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.md)
+
+## ExpressionFunctionDefinition interface
+
+`ExpressionFunctionDefinition` is the interface plugins have to implement to register a function in `expressions` plugin.
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionFunctionDefinition<Name extends string, Input, Arguments extends Record<string, any>, Output, Context extends ExecutionContext = ExecutionContext> 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [aliases](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.aliases.md) | <code>string[]</code> |  What is this? |
+|  [args](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.args.md) | <code>{</code><br/><code>        [key in keyof Arguments]: ArgumentType&lt;Arguments[key]&gt;;</code><br/><code>    }</code> | Specification of arguments that function supports. This list will also be used for autocomplete functionality when your function is being edited. |
+|  [context](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.context.md) | <code>{</code><br/><code>        types: AnyExpressionFunctionDefinition['inputTypes'];</code><br/><code>    }</code> |  |
+|  [help](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.help.md) | <code>string</code> | Help text displayed in the Expression editor. This text should be internationalized. |
+|  [inputTypes](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.inputtypes.md) | <code>Array&lt;TypeToString&lt;Input&gt;&gt;</code> | List of allowed type names for input value of this function. If this property is set the input of function will be cast to the first possible type in this list. If this property is missing the input will be provided to the function as-is. |
+|  [name](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.name.md) | <code>Name</code> | The name of the function, as will be used in expression. |
+|  [type](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.type.md) | <code>TypeToString&lt;UnwrapPromiseOrReturn&lt;Output&gt;&gt;</code> | Name of type of value this function outputs. |
+
+## Methods
+
+|  Method | Description |
+|  --- | --- |
+|  [fn(input, args, context)](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.fn.md) | The actual implementation of the function. |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.name.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.name.md
new file mode 100644
index 0000000000000..1c74a25851c96
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.name.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.md) &gt; [name](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.name.md)
+
+## ExpressionFunctionDefinition.name property
+
+The name of the function, as will be used in expression.
+
+<b>Signature:</b>
+
+```typescript
+name: Name;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.type.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.type.md
new file mode 100644
index 0000000000000..4831f24a418bc
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.type.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.md) &gt; [type](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.type.md)
+
+## ExpressionFunctionDefinition.type property
+
+Name of type of value this function outputs.
+
+<b>Signature:</b>
+
+```typescript
+type?: TypeToString<UnwrapPromiseOrReturn<Output>>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.clog.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.clog.md
new file mode 100644
index 0000000000000..3b3b5520ab3ab
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.clog.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionDefinitions](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.md) &gt; [clog](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.clog.md)
+
+## ExpressionFunctionDefinitions.clog property
+
+<b>Signature:</b>
+
+```typescript
+clog: ExpressionFunctionClog;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.font.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.font.md
new file mode 100644
index 0000000000000..06674eeaf9d7a
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.font.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionDefinitions](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.md) &gt; [font](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.font.md)
+
+## ExpressionFunctionDefinitions.font property
+
+<b>Signature:</b>
+
+```typescript
+font: ExpressionFunctionFont;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.kibana.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.kibana.md
new file mode 100644
index 0000000000000..abe8e0ae161ad
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.kibana.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionDefinitions](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.md) &gt; [kibana](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.kibana.md)
+
+## ExpressionFunctionDefinitions.kibana property
+
+<b>Signature:</b>
+
+```typescript
+kibana: ExpressionFunctionKibana;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.kibana_context.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.kibana_context.md
new file mode 100644
index 0000000000000..4b58fd84e160d
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.kibana_context.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionDefinitions](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.md) &gt; [kibana\_context](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.kibana_context.md)
+
+## ExpressionFunctionDefinitions.kibana\_context property
+
+<b>Signature:</b>
+
+```typescript
+kibana_context: ExpressionFunctionKibanaContext;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.md
new file mode 100644
index 0000000000000..914c5d6ebe2f6
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.md
@@ -0,0 +1,26 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionDefinitions](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.md)
+
+## ExpressionFunctionDefinitions interface
+
+A mapping of `ExpressionFunctionDefinition`<!-- -->s for functions which the Expressions services provides out-of-the-box. Any new functions registered by the Expressions plugin should have their types added here.
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionFunctionDefinitions 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [clog](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.clog.md) | <code>ExpressionFunctionClog</code> |  |
+|  [font](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.font.md) | <code>ExpressionFunctionFont</code> |  |
+|  [kibana\_context](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.kibana_context.md) | <code>ExpressionFunctionKibanaContext</code> |  |
+|  [kibana](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.kibana.md) | <code>ExpressionFunctionKibana</code> |  |
+|  [theme](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.theme.md) | <code>ExpressionFunctionTheme</code> |  |
+|  [var\_set](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.var_set.md) | <code>ExpressionFunctionVarSet</code> |  |
+|  [var](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.var.md) | <code>ExpressionFunctionVar</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.theme.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.theme.md
new file mode 100644
index 0000000000000..766aee8f80809
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.theme.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionDefinitions](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.md) &gt; [theme](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.theme.md)
+
+## ExpressionFunctionDefinitions.theme property
+
+<b>Signature:</b>
+
+```typescript
+theme: ExpressionFunctionTheme;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.var.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.var.md
new file mode 100644
index 0000000000000..4c3f4bb98a51e
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.var.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionDefinitions](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.md) &gt; [var](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.var.md)
+
+## ExpressionFunctionDefinitions.var property
+
+<b>Signature:</b>
+
+```typescript
+var: ExpressionFunctionVar;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.var_set.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.var_set.md
new file mode 100644
index 0000000000000..a45d58242e4f3
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.var_set.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionDefinitions](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.md) &gt; [var\_set](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.var_set.md)
+
+## ExpressionFunctionDefinitions.var\_set property
+
+<b>Signature:</b>
+
+```typescript
+var_set: ExpressionFunctionVarSet;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionkibana.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionkibana.md
new file mode 100644
index 0000000000000..8ccf48ba28527
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionkibana.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionKibana](./kibana-plugin-plugins-expressions-public.expressionfunctionkibana.md)
+
+## ExpressionFunctionKibana type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionFunctionKibana = ExpressionFunctionDefinition<'kibana', ExpressionValueSearchContext | null, object, ExpressionValueSearchContext>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter._constructor_.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter._constructor_.md
new file mode 100644
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@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter._constructor_.md)
+
+## ExpressionFunctionParameter.(constructor)
+
+Constructs a new instance of the `ExpressionFunctionParameter` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(name: string, arg: ArgumentType<any>);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  name | <code>string</code> |  |
+|  arg | <code>ArgumentType&lt;any&gt;</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.accepts.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.accepts.md
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@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.md) &gt; [accepts](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.accepts.md)
+
+## ExpressionFunctionParameter.accepts() method
+
+<b>Signature:</b>
+
+```typescript
+accepts(type: string): boolean;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  type | <code>string</code> |  |
+
+<b>Returns:</b>
+
+`boolean`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.aliases.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.aliases.md
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@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.md) &gt; [aliases](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.aliases.md)
+
+## ExpressionFunctionParameter.aliases property
+
+<b>Signature:</b>
+
+```typescript
+aliases: string[];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.default.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.default.md
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@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.md) &gt; [default](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.default.md)
+
+## ExpressionFunctionParameter.default property
+
+<b>Signature:</b>
+
+```typescript
+default: any;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.help.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.help.md
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@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.md) &gt; [help](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.help.md)
+
+## ExpressionFunctionParameter.help property
+
+<b>Signature:</b>
+
+```typescript
+help: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.md
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@@ -0,0 +1,38 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.md)
+
+## ExpressionFunctionParameter class
+
+<b>Signature:</b>
+
+```typescript
+export declare class ExpressionFunctionParameter 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(name, arg)](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter._constructor_.md) |  | Constructs a new instance of the <code>ExpressionFunctionParameter</code> class |
+
+## Properties
+
+|  Property | Modifiers | Type | Description |
+|  --- | --- | --- | --- |
+|  [aliases](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.aliases.md) |  | <code>string[]</code> |  |
+|  [default](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.default.md) |  | <code>any</code> |  |
+|  [help](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.help.md) |  | <code>string</code> |  |
+|  [multi](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.multi.md) |  | <code>boolean</code> |  |
+|  [name](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.name.md) |  | <code>string</code> |  |
+|  [options](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.options.md) |  | <code>any[]</code> |  |
+|  [required](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.required.md) |  | <code>boolean</code> |  |
+|  [resolve](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.resolve.md) |  | <code>boolean</code> |  |
+|  [types](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.types.md) |  | <code>string[]</code> |  |
+
+## Methods
+
+|  Method | Modifiers | Description |
+|  --- | --- | --- |
+|  [accepts(type)](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.accepts.md) |  |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.multi.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.multi.md
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.multi.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.md) &gt; [multi](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.multi.md)
+
+## ExpressionFunctionParameter.multi property
+
+<b>Signature:</b>
+
+```typescript
+multi: boolean;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.name.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.name.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.name.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.md) &gt; [name](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.name.md)
+
+## ExpressionFunctionParameter.name property
+
+<b>Signature:</b>
+
+```typescript
+name: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.options.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.options.md
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.options.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.md) &gt; [options](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.options.md)
+
+## ExpressionFunctionParameter.options property
+
+<b>Signature:</b>
+
+```typescript
+options: any[];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.required.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.required.md
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.required.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.md) &gt; [required](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.required.md)
+
+## ExpressionFunctionParameter.required property
+
+<b>Signature:</b>
+
+```typescript
+required: boolean;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.resolve.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.resolve.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.resolve.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.md) &gt; [resolve](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.resolve.md)
+
+## ExpressionFunctionParameter.resolve property
+
+<b>Signature:</b>
+
+```typescript
+resolve: boolean;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.types.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.types.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunctionparameter.types.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.md) &gt; [types](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.types.md)
+
+## ExpressionFunctionParameter.types property
+
+<b>Signature:</b>
+
+```typescript
+types: string[];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionimage.dataurl.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionimage.dataurl.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionimage.dataurl.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionImage](./kibana-plugin-plugins-expressions-public.expressionimage.md) &gt; [dataurl](./kibana-plugin-plugins-expressions-public.expressionimage.dataurl.md)
+
+## ExpressionImage.dataurl property
+
+<b>Signature:</b>
+
+```typescript
+dataurl: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionimage.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionimage.md
new file mode 100644
index 0000000000000..430273cca7edd
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionimage.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionImage](./kibana-plugin-plugins-expressions-public.expressionimage.md)
+
+## ExpressionImage interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionImage 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [dataurl](./kibana-plugin-plugins-expressions-public.expressionimage.dataurl.md) | <code>string</code> |  |
+|  [mode](./kibana-plugin-plugins-expressions-public.expressionimage.mode.md) | <code>string</code> |  |
+|  [type](./kibana-plugin-plugins-expressions-public.expressionimage.type.md) | <code>'image'</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionimage.mode.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionimage.mode.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionimage.mode.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionImage](./kibana-plugin-plugins-expressions-public.expressionimage.md) &gt; [mode](./kibana-plugin-plugins-expressions-public.expressionimage.mode.md)
+
+## ExpressionImage.mode property
+
+<b>Signature:</b>
+
+```typescript
+mode: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionimage.type.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionimage.type.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionimage.type.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionImage](./kibana-plugin-plugins-expressions-public.expressionimage.md) &gt; [type](./kibana-plugin-plugins-expressions-public.expressionimage.type.md)
+
+## ExpressionImage.type property
+
+<b>Signature:</b>
+
+```typescript
+type: 'image';
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.displayname.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.displayname.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.displayname.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderDefinition](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.md) &gt; [displayName](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.displayname.md)
+
+## ExpressionRenderDefinition.displayName property
+
+A user friendly name of the renderer as will be displayed to user in UI.
+
+<b>Signature:</b>
+
+```typescript
+displayName: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.help.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.help.md
new file mode 100644
index 0000000000000..ca67f18c0591f
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.help.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderDefinition](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.md) &gt; [help](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.help.md)
+
+## ExpressionRenderDefinition.help property
+
+Help text as will be displayed to user. A sentence or few about what this element does.
+
+<b>Signature:</b>
+
+```typescript
+help?: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.md
new file mode 100644
index 0000000000000..3c3322914cebe
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.md
@@ -0,0 +1,23 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderDefinition](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.md)
+
+## ExpressionRenderDefinition interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionRenderDefinition<Config = unknown> 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [displayName](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.displayname.md) | <code>string</code> | A user friendly name of the renderer as will be displayed to user in UI. |
+|  [help](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.help.md) | <code>string</code> | Help text as will be displayed to user. A sentence or few about what this element does. |
+|  [name](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.name.md) | <code>string</code> | Technical name of the renderer, used as ID to identify renderer in expression renderer registry. This must match the name of the expression function that is used to create the <code>type: render</code> object. |
+|  [render](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.render.md) | <code>(domNode: HTMLElement, config: Config, handlers: IInterpreterRenderHandlers) =&gt; void &#124; Promise&lt;void&gt;</code> | The function called to render the output data of an expression. |
+|  [reuseDomNode](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.reusedomnode.md) | <code>boolean</code> | Tell the renderer if the dom node should be reused, it's recreated each time by default. |
+|  [validate](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.validate.md) | <code>() =&gt; undefined &#124; Error</code> | Used to validate the data before calling the render function. |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.name.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.name.md
new file mode 100644
index 0000000000000..25b782549fe7b
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.name.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderDefinition](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.md) &gt; [name](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.name.md)
+
+## ExpressionRenderDefinition.name property
+
+Technical name of the renderer, used as ID to identify renderer in expression renderer registry. This must match the name of the expression function that is used to create the `type: render` object.
+
+<b>Signature:</b>
+
+```typescript
+name: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.render.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.render.md
new file mode 100644
index 0000000000000..d476ae15d4237
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.render.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderDefinition](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.md) &gt; [render](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.render.md)
+
+## ExpressionRenderDefinition.render property
+
+The function called to render the output data of an expression.
+
+<b>Signature:</b>
+
+```typescript
+render: (domNode: HTMLElement, config: Config, handlers: IInterpreterRenderHandlers) => void | Promise<void>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.reusedomnode.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.reusedomnode.md
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index 0000000000000..515cb2c1c078d
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.reusedomnode.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderDefinition](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.md) &gt; [reuseDomNode](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.reusedomnode.md)
+
+## ExpressionRenderDefinition.reuseDomNode property
+
+Tell the renderer if the dom node should be reused, it's recreated each time by default.
+
+<b>Signature:</b>
+
+```typescript
+reuseDomNode: boolean;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.validate.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.validate.md
new file mode 100644
index 0000000000000..616a0dcc0a94f
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderdefinition.validate.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderDefinition](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.md) &gt; [validate](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.validate.md)
+
+## ExpressionRenderDefinition.validate property
+
+Used to validate the data before calling the render function.
+
+<b>Signature:</b>
+
+```typescript
+validate?: () => undefined | Error;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer._constructor_.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer._constructor_.md
new file mode 100644
index 0000000000000..de74ee631fcf1
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer._constructor_.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderer](./kibana-plugin-plugins-expressions-public.expressionrenderer.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-public.expressionrenderer._constructor_.md)
+
+## ExpressionRenderer.(constructor)
+
+Constructs a new instance of the `ExpressionRenderer` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(config: ExpressionRenderDefinition<Config>);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  config | <code>ExpressionRenderDefinition&lt;Config&gt;</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.displayname.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.displayname.md
new file mode 100644
index 0000000000000..710bcc60a47e7
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.displayname.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderer](./kibana-plugin-plugins-expressions-public.expressionrenderer.md) &gt; [displayName](./kibana-plugin-plugins-expressions-public.expressionrenderer.displayname.md)
+
+## ExpressionRenderer.displayName property
+
+<b>Signature:</b>
+
+```typescript
+readonly displayName: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.help.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.help.md
new file mode 100644
index 0000000000000..f5b3f248e71fe
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.help.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderer](./kibana-plugin-plugins-expressions-public.expressionrenderer.md) &gt; [help](./kibana-plugin-plugins-expressions-public.expressionrenderer.help.md)
+
+## ExpressionRenderer.help property
+
+<b>Signature:</b>
+
+```typescript
+readonly help: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.md
new file mode 100644
index 0000000000000..017d88c0cda69
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.md
@@ -0,0 +1,29 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderer](./kibana-plugin-plugins-expressions-public.expressionrenderer.md)
+
+## ExpressionRenderer class
+
+<b>Signature:</b>
+
+```typescript
+export declare class ExpressionRenderer<Config = unknown> 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(config)](./kibana-plugin-plugins-expressions-public.expressionrenderer._constructor_.md) |  | Constructs a new instance of the <code>ExpressionRenderer</code> class |
+
+## Properties
+
+|  Property | Modifiers | Type | Description |
+|  --- | --- | --- | --- |
+|  [displayName](./kibana-plugin-plugins-expressions-public.expressionrenderer.displayname.md) |  | <code>string</code> |  |
+|  [help](./kibana-plugin-plugins-expressions-public.expressionrenderer.help.md) |  | <code>string</code> |  |
+|  [name](./kibana-plugin-plugins-expressions-public.expressionrenderer.name.md) |  | <code>string</code> |  |
+|  [render](./kibana-plugin-plugins-expressions-public.expressionrenderer.render.md) |  | <code>ExpressionRenderDefinition&lt;Config&gt;['render']</code> |  |
+|  [reuseDomNode](./kibana-plugin-plugins-expressions-public.expressionrenderer.reusedomnode.md) |  | <code>boolean</code> |  |
+|  [validate](./kibana-plugin-plugins-expressions-public.expressionrenderer.validate.md) |  | <code>() =&gt; void &#124; Error</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.name.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.name.md
new file mode 100644
index 0000000000000..2ed6677cf6ec4
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.name.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderer](./kibana-plugin-plugins-expressions-public.expressionrenderer.md) &gt; [name](./kibana-plugin-plugins-expressions-public.expressionrenderer.name.md)
+
+## ExpressionRenderer.name property
+
+<b>Signature:</b>
+
+```typescript
+readonly name: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.render.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.render.md
new file mode 100644
index 0000000000000..2491cb31d7659
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.render.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderer](./kibana-plugin-plugins-expressions-public.expressionrenderer.md) &gt; [render](./kibana-plugin-plugins-expressions-public.expressionrenderer.render.md)
+
+## ExpressionRenderer.render property
+
+<b>Signature:</b>
+
+```typescript
+readonly render: ExpressionRenderDefinition<Config>['render'];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.reusedomnode.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.reusedomnode.md
new file mode 100644
index 0000000000000..b5c3a89cc3ed1
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.reusedomnode.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderer](./kibana-plugin-plugins-expressions-public.expressionrenderer.md) &gt; [reuseDomNode](./kibana-plugin-plugins-expressions-public.expressionrenderer.reusedomnode.md)
+
+## ExpressionRenderer.reuseDomNode property
+
+<b>Signature:</b>
+
+```typescript
+readonly reuseDomNode: boolean;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.validate.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.validate.md
new file mode 100644
index 0000000000000..7c1a7ac65809f
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderer.validate.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderer](./kibana-plugin-plugins-expressions-public.expressionrenderer.md) &gt; [validate](./kibana-plugin-plugins-expressions-public.expressionrenderer.validate.md)
+
+## ExpressionRenderer.validate property
+
+<b>Signature:</b>
+
+```typescript
+readonly validate: () => void | Error;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderercomponent.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderercomponent.md
new file mode 100644
index 0000000000000..c49a74abe57f3
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderercomponent.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRendererComponent](./kibana-plugin-plugins-expressions-public.expressionrenderercomponent.md)
+
+## ExpressionRendererComponent type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionRendererComponent = React.FC<ReactExpressionRendererProps>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererevent.data.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererevent.data.md
new file mode 100644
index 0000000000000..537a3f278863d
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererevent.data.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRendererEvent](./kibana-plugin-plugins-expressions-public.expressionrendererevent.md) &gt; [data](./kibana-plugin-plugins-expressions-public.expressionrendererevent.data.md)
+
+## ExpressionRendererEvent.data property
+
+<b>Signature:</b>
+
+```typescript
+data: any;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererevent.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererevent.md
new file mode 100644
index 0000000000000..952d2f92496c3
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererevent.md
@@ -0,0 +1,19 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRendererEvent](./kibana-plugin-plugins-expressions-public.expressionrendererevent.md)
+
+## ExpressionRendererEvent interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionRendererEvent 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [data](./kibana-plugin-plugins-expressions-public.expressionrendererevent.data.md) | <code>any</code> |  |
+|  [name](./kibana-plugin-plugins-expressions-public.expressionrendererevent.name.md) | <code>string</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererevent.name.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererevent.name.md
new file mode 100644
index 0000000000000..bbff92108358a
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererevent.name.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRendererEvent](./kibana-plugin-plugins-expressions-public.expressionrendererevent.md) &gt; [name](./kibana-plugin-plugins-expressions-public.expressionrendererevent.name.md)
+
+## ExpressionRendererEvent.name property
+
+<b>Signature:</b>
+
+```typescript
+name: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererregistry.get.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererregistry.get.md
new file mode 100644
index 0000000000000..cff44001f0a1f
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererregistry.get.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRendererRegistry](./kibana-plugin-plugins-expressions-public.expressionrendererregistry.md) &gt; [get](./kibana-plugin-plugins-expressions-public.expressionrendererregistry.get.md)
+
+## ExpressionRendererRegistry.get() method
+
+<b>Signature:</b>
+
+```typescript
+get(id: string): ExpressionRenderer | null;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  id | <code>string</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionRenderer | null`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererregistry.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererregistry.md
new file mode 100644
index 0000000000000..e53f2a7970723
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererregistry.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRendererRegistry](./kibana-plugin-plugins-expressions-public.expressionrendererregistry.md)
+
+## ExpressionRendererRegistry class
+
+<b>Signature:</b>
+
+```typescript
+export declare class ExpressionRendererRegistry implements IRegistry<ExpressionRenderer> 
+```
+
+## Methods
+
+|  Method | Modifiers | Description |
+|  --- | --- | --- |
+|  [get(id)](./kibana-plugin-plugins-expressions-public.expressionrendererregistry.get.md) |  |  |
+|  [register(definition)](./kibana-plugin-plugins-expressions-public.expressionrendererregistry.register.md) |  |  |
+|  [toArray()](./kibana-plugin-plugins-expressions-public.expressionrendererregistry.toarray.md) |  |  |
+|  [toJS()](./kibana-plugin-plugins-expressions-public.expressionrendererregistry.tojs.md) |  |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererregistry.register.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererregistry.register.md
new file mode 100644
index 0000000000000..13cabb0410861
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererregistry.register.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRendererRegistry](./kibana-plugin-plugins-expressions-public.expressionrendererregistry.md) &gt; [register](./kibana-plugin-plugins-expressions-public.expressionrendererregistry.register.md)
+
+## ExpressionRendererRegistry.register() method
+
+<b>Signature:</b>
+
+```typescript
+register(definition: AnyExpressionRenderDefinition | (() => AnyExpressionRenderDefinition)): void;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  definition | <code>AnyExpressionRenderDefinition &#124; (() =&gt; AnyExpressionRenderDefinition)</code> |  |
+
+<b>Returns:</b>
+
+`void`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererregistry.toarray.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererregistry.toarray.md
new file mode 100644
index 0000000000000..b29fd46265d16
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererregistry.toarray.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRendererRegistry](./kibana-plugin-plugins-expressions-public.expressionrendererregistry.md) &gt; [toArray](./kibana-plugin-plugins-expressions-public.expressionrendererregistry.toarray.md)
+
+## ExpressionRendererRegistry.toArray() method
+
+<b>Signature:</b>
+
+```typescript
+toArray(): ExpressionRenderer[];
+```
+<b>Returns:</b>
+
+`ExpressionRenderer[]`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererregistry.tojs.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererregistry.tojs.md
new file mode 100644
index 0000000000000..930ef7f8d89d2
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererregistry.tojs.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRendererRegistry](./kibana-plugin-plugins-expressions-public.expressionrendererregistry.md) &gt; [toJS](./kibana-plugin-plugins-expressions-public.expressionrendererregistry.tojs.md)
+
+## ExpressionRendererRegistry.toJS() method
+
+<b>Signature:</b>
+
+```typescript
+toJS(): Record<string, ExpressionRenderer>;
+```
+<b>Returns:</b>
+
+`Record<string, ExpressionRenderer>`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererror.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererror.md
new file mode 100644
index 0000000000000..3b3c1644adbef
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererror.md
@@ -0,0 +1,18 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderError](./kibana-plugin-plugins-expressions-public.expressionrendererror.md)
+
+## ExpressionRenderError interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionRenderError extends Error 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [type](./kibana-plugin-plugins-expressions-public.expressionrendererror.type.md) | <code>string</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererror.type.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererror.type.md
new file mode 100644
index 0000000000000..b1939299a9d37
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrendererror.type.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderError](./kibana-plugin-plugins-expressions-public.expressionrendererror.md) &gt; [type](./kibana-plugin-plugins-expressions-public.expressionrendererror.type.md)
+
+## ExpressionRenderError.type property
+
+<b>Signature:</b>
+
+```typescript
+type?: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler._constructor_.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler._constructor_.md
new file mode 100644
index 0000000000000..fb6ba7ee2621c
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler._constructor_.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderHandler](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-public.expressionrenderhandler._constructor_.md)
+
+## ExpressionRenderHandler.(constructor)
+
+Constructs a new instance of the `ExpressionRenderHandler` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(element: HTMLElement, { onRenderError }?: Partial<ExpressionRenderHandlerParams>);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  element | <code>HTMLElement</code> |  |
+|  { onRenderError } | <code>Partial&lt;ExpressionRenderHandlerParams&gt;</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.destroy.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.destroy.md
new file mode 100644
index 0000000000000..df949324b3b45
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.destroy.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderHandler](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.md) &gt; [destroy](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.destroy.md)
+
+## ExpressionRenderHandler.destroy property
+
+<b>Signature:</b>
+
+```typescript
+destroy: () => void;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.events_.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.events_.md
new file mode 100644
index 0000000000000..c462724a4fdd9
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.events_.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderHandler](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.md) &gt; [events$](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.events_.md)
+
+## ExpressionRenderHandler.events$ property
+
+<b>Signature:</b>
+
+```typescript
+events$: Observable<ExpressionRendererEvent>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.getelement.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.getelement.md
new file mode 100644
index 0000000000000..42262938502d8
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.getelement.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderHandler](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.md) &gt; [getElement](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.getelement.md)
+
+## ExpressionRenderHandler.getElement property
+
+<b>Signature:</b>
+
+```typescript
+getElement: () => HTMLElement;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.handlerendererror.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.handlerendererror.md
new file mode 100644
index 0000000000000..6a70cac98ef8a
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.handlerendererror.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderHandler](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.md) &gt; [handleRenderError](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.handlerendererror.md)
+
+## ExpressionRenderHandler.handleRenderError property
+
+<b>Signature:</b>
+
+```typescript
+handleRenderError: (error: ExpressionRenderError) => void;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.md
new file mode 100644
index 0000000000000..7f7d5792ba684
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.md
@@ -0,0 +1,30 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderHandler](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.md)
+
+## ExpressionRenderHandler class
+
+<b>Signature:</b>
+
+```typescript
+export declare class ExpressionRenderHandler 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(element, { onRenderError })](./kibana-plugin-plugins-expressions-public.expressionrenderhandler._constructor_.md) |  | Constructs a new instance of the <code>ExpressionRenderHandler</code> class |
+
+## Properties
+
+|  Property | Modifiers | Type | Description |
+|  --- | --- | --- | --- |
+|  [destroy](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.destroy.md) |  | <code>() =&gt; void</code> |  |
+|  [events$](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.events_.md) |  | <code>Observable&lt;ExpressionRendererEvent&gt;</code> |  |
+|  [getElement](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.getelement.md) |  | <code>() =&gt; HTMLElement</code> |  |
+|  [handleRenderError](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.handlerendererror.md) |  | <code>(error: ExpressionRenderError) =&gt; void</code> |  |
+|  [render](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.render.md) |  | <code>(data: any, uiState?: any) =&gt; Promise&lt;void&gt;</code> |  |
+|  [render$](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.render_.md) |  | <code>Observable&lt;number&gt;</code> |  |
+|  [update$](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.update_.md) |  | <code>Observable&lt;UpdateValue &#124; null&gt;</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.render.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.render.md
new file mode 100644
index 0000000000000..dec17d60ffd14
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.render.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderHandler](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.md) &gt; [render](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.render.md)
+
+## ExpressionRenderHandler.render property
+
+<b>Signature:</b>
+
+```typescript
+render: (data: any, uiState?: any) => Promise<void>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.render_.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.render_.md
new file mode 100644
index 0000000000000..631dcbfcf89c1
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.render_.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderHandler](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.md) &gt; [render$](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.render_.md)
+
+## ExpressionRenderHandler.render$ property
+
+<b>Signature:</b>
+
+```typescript
+render$: Observable<number>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.update_.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.update_.md
new file mode 100644
index 0000000000000..527e64f8e4815
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionrenderhandler.update_.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionRenderHandler](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.md) &gt; [update$](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.update_.md)
+
+## ExpressionRenderHandler.update$ property
+
+<b>Signature:</b>
+
+```typescript
+update$: Observable<UpdateValue | null>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionspublicplugin._constructor_.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionspublicplugin._constructor_.md
new file mode 100644
index 0000000000000..f49ae9b8166e7
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionspublicplugin._constructor_.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsPublicPlugin](./kibana-plugin-plugins-expressions-public.expressionspublicplugin.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-public.expressionspublicplugin._constructor_.md)
+
+## ExpressionsPublicPlugin.(constructor)
+
+Constructs a new instance of the `ExpressionsPublicPlugin` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(initializerContext: PluginInitializerContext);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  initializerContext | <code>PluginInitializerContext</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionspublicplugin.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionspublicplugin.md
new file mode 100644
index 0000000000000..dc8c961ceecc4
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionspublicplugin.md
@@ -0,0 +1,26 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsPublicPlugin](./kibana-plugin-plugins-expressions-public.expressionspublicplugin.md)
+
+## ExpressionsPublicPlugin class
+
+<b>Signature:</b>
+
+```typescript
+export declare class ExpressionsPublicPlugin implements Plugin<ExpressionsSetup, ExpressionsStart> 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(initializerContext)](./kibana-plugin-plugins-expressions-public.expressionspublicplugin._constructor_.md) |  | Constructs a new instance of the <code>ExpressionsPublicPlugin</code> class |
+
+## Methods
+
+|  Method | Modifiers | Description |
+|  --- | --- | --- |
+|  [setup(core)](./kibana-plugin-plugins-expressions-public.expressionspublicplugin.setup.md) |  |  |
+|  [start(core)](./kibana-plugin-plugins-expressions-public.expressionspublicplugin.start.md) |  |  |
+|  [stop()](./kibana-plugin-plugins-expressions-public.expressionspublicplugin.stop.md) |  |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionspublicplugin.setup.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionspublicplugin.setup.md
new file mode 100644
index 0000000000000..11f72a737aa44
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionspublicplugin.setup.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsPublicPlugin](./kibana-plugin-plugins-expressions-public.expressionspublicplugin.md) &gt; [setup](./kibana-plugin-plugins-expressions-public.expressionspublicplugin.setup.md)
+
+## ExpressionsPublicPlugin.setup() method
+
+<b>Signature:</b>
+
+```typescript
+setup(core: CoreSetup): ExpressionsSetup;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  core | <code>CoreSetup</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionsSetup`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionspublicplugin.start.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionspublicplugin.start.md
new file mode 100644
index 0000000000000..75599e2575809
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionspublicplugin.start.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsPublicPlugin](./kibana-plugin-plugins-expressions-public.expressionspublicplugin.md) &gt; [start](./kibana-plugin-plugins-expressions-public.expressionspublicplugin.start.md)
+
+## ExpressionsPublicPlugin.start() method
+
+<b>Signature:</b>
+
+```typescript
+start(core: CoreStart): ExpressionsStart;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  core | <code>CoreStart</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionsStart`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionspublicplugin.stop.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionspublicplugin.stop.md
new file mode 100644
index 0000000000000..2de33ef166b96
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionspublicplugin.stop.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsPublicPlugin](./kibana-plugin-plugins-expressions-public.expressionspublicplugin.md) &gt; [stop](./kibana-plugin-plugins-expressions-public.expressionspublicplugin.stop.md)
+
+## ExpressionsPublicPlugin.stop() method
+
+<b>Signature:</b>
+
+```typescript
+stop(): void;
+```
+<b>Returns:</b>
+
+`void`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice._constructor_.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice._constructor_.md
new file mode 100644
index 0000000000000..695adad8cbeaf
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice._constructor_.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-public.expressionsservice._constructor_.md)
+
+## ExpressionsService.(constructor)
+
+Constructs a new instance of the `ExpressionsService` class
+
+<b>Signature:</b>
+
+```typescript
+constructor({ executor, renderers, }?: ExpressionServiceParams);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  { executor, renderers, } | <code>ExpressionServiceParams</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.execute.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.execute.md
new file mode 100644
index 0000000000000..e4ab0aa32516c
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.execute.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md) &gt; [execute](./kibana-plugin-plugins-expressions-public.expressionsservice.execute.md)
+
+## ExpressionsService.execute property
+
+<b>Signature:</b>
+
+```typescript
+readonly execute: ExpressionsServiceStart['execute'];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.executor.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.executor.md
new file mode 100644
index 0000000000000..f206a0a5c4bb3
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.executor.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md) &gt; [executor](./kibana-plugin-plugins-expressions-public.expressionsservice.executor.md)
+
+## ExpressionsService.executor property
+
+<b>Signature:</b>
+
+```typescript
+readonly executor: Executor;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.fork.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.fork.md
new file mode 100644
index 0000000000000..5273f8d79f5cf
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.fork.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md) &gt; [fork](./kibana-plugin-plugins-expressions-public.expressionsservice.fork.md)
+
+## ExpressionsService.fork property
+
+<b>Signature:</b>
+
+```typescript
+readonly fork: () => ExpressionsService;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.getfunction.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.getfunction.md
new file mode 100644
index 0000000000000..7d79a1e407a46
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.getfunction.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md) &gt; [getFunction](./kibana-plugin-plugins-expressions-public.expressionsservice.getfunction.md)
+
+## ExpressionsService.getFunction property
+
+<b>Signature:</b>
+
+```typescript
+readonly getFunction: ExpressionsServiceStart['getFunction'];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.getfunctions.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.getfunctions.md
new file mode 100644
index 0000000000000..6e1b1ca3e1c6d
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.getfunctions.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md) &gt; [getFunctions](./kibana-plugin-plugins-expressions-public.expressionsservice.getfunctions.md)
+
+## ExpressionsService.getFunctions property
+
+Returns POJO map of all registered expression functions, where keys are names of the functions and values are `ExpressionFunction` instances.
+
+<b>Signature:</b>
+
+```typescript
+readonly getFunctions: () => ReturnType<Executor['getFunctions']>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.getrenderer.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.getrenderer.md
new file mode 100644
index 0000000000000..5821654cf8ec5
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.getrenderer.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md) &gt; [getRenderer](./kibana-plugin-plugins-expressions-public.expressionsservice.getrenderer.md)
+
+## ExpressionsService.getRenderer property
+
+<b>Signature:</b>
+
+```typescript
+readonly getRenderer: ExpressionsServiceStart['getRenderer'];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.getrenderers.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.getrenderers.md
new file mode 100644
index 0000000000000..3258717759c90
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.getrenderers.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md) &gt; [getRenderers](./kibana-plugin-plugins-expressions-public.expressionsservice.getrenderers.md)
+
+## ExpressionsService.getRenderers property
+
+Returns POJO map of all registered expression renderers, where keys are names of the renderers and values are `ExpressionRenderer` instances.
+
+<b>Signature:</b>
+
+```typescript
+readonly getRenderers: () => ReturnType<ExpressionRendererRegistry['toJS']>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.gettype.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.gettype.md
new file mode 100644
index 0000000000000..e8c451ab88e9f
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.gettype.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md) &gt; [getType](./kibana-plugin-plugins-expressions-public.expressionsservice.gettype.md)
+
+## ExpressionsService.getType property
+
+<b>Signature:</b>
+
+```typescript
+readonly getType: ExpressionsServiceStart['getType'];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.gettypes.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.gettypes.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.gettypes.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md) &gt; [getTypes](./kibana-plugin-plugins-expressions-public.expressionsservice.gettypes.md)
+
+## ExpressionsService.getTypes property
+
+Returns POJO map of all registered expression types, where keys are names of the types and values are `ExpressionType` instances.
+
+<b>Signature:</b>
+
+```typescript
+readonly getTypes: () => ReturnType<Executor['getTypes']>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.md
@@ -0,0 +1,72 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md)
+
+## ExpressionsService class
+
+`ExpressionsService` class is used for multiple purposes:
+
+1. It implements the same Expressions service that can be used on both: (1) server-side and (2) browser-side. 2. It implements the same Expressions service that users can fork/clone, thus have their own instance of the Expressions plugin. 3. `ExpressionsService` defines the public contracts of \*setup\* and \*start\* Kibana Platform life-cycles for ease-of-use on server-side and browser-side. 4. `ExpressionsService` creates a bound version of all exported contract functions. 5. Functions are bound the way there are:
+
+\`\`\`<!-- -->ts registerFunction = (...args: Parameters<!-- -->&lt;<!-- -->Executor\['registerFunction'\]<!-- -->&gt; ): ReturnType<!-- -->&lt;<!-- -->Executor\['registerFunction'\]<!-- -->&gt; =<!-- -->&gt; this.executor.registerFunction(...args); \`\`\`
+
+so that JSDoc appears in developers IDE when they use those `plugins.expressions.registerFunction(`<!-- -->.
+
+<b>Signature:</b>
+
+```typescript
+export declare class ExpressionsService 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)({ executor, renderers, })](./kibana-plugin-plugins-expressions-public.expressionsservice._constructor_.md) |  | Constructs a new instance of the <code>ExpressionsService</code> class |
+
+## Properties
+
+|  Property | Modifiers | Type | Description |
+|  --- | --- | --- | --- |
+|  [execute](./kibana-plugin-plugins-expressions-public.expressionsservice.execute.md) |  | <code>ExpressionsServiceStart['execute']</code> |  |
+|  [executor](./kibana-plugin-plugins-expressions-public.expressionsservice.executor.md) |  | <code>Executor</code> |  |
+|  [fork](./kibana-plugin-plugins-expressions-public.expressionsservice.fork.md) |  | <code>() =&gt; ExpressionsService</code> |  |
+|  [getFunction](./kibana-plugin-plugins-expressions-public.expressionsservice.getfunction.md) |  | <code>ExpressionsServiceStart['getFunction']</code> |  |
+|  [getFunctions](./kibana-plugin-plugins-expressions-public.expressionsservice.getfunctions.md) |  | <code>() =&gt; ReturnType&lt;Executor['getFunctions']&gt;</code> | Returns POJO map of all registered expression functions, where keys are names of the functions and values are <code>ExpressionFunction</code> instances. |
+|  [getRenderer](./kibana-plugin-plugins-expressions-public.expressionsservice.getrenderer.md) |  | <code>ExpressionsServiceStart['getRenderer']</code> |  |
+|  [getRenderers](./kibana-plugin-plugins-expressions-public.expressionsservice.getrenderers.md) |  | <code>() =&gt; ReturnType&lt;ExpressionRendererRegistry['toJS']&gt;</code> | Returns POJO map of all registered expression renderers, where keys are names of the renderers and values are <code>ExpressionRenderer</code> instances. |
+|  [getType](./kibana-plugin-plugins-expressions-public.expressionsservice.gettype.md) |  | <code>ExpressionsServiceStart['getType']</code> |  |
+|  [getTypes](./kibana-plugin-plugins-expressions-public.expressionsservice.gettypes.md) |  | <code>() =&gt; ReturnType&lt;Executor['getTypes']&gt;</code> | Returns POJO map of all registered expression types, where keys are names of the types and values are <code>ExpressionType</code> instances. |
+|  [registerFunction](./kibana-plugin-plugins-expressions-public.expressionsservice.registerfunction.md) |  | <code>(functionDefinition: AnyExpressionFunctionDefinition &#124; (() =&gt; AnyExpressionFunctionDefinition)) =&gt; void</code> | Register an expression function, which will be possible to execute as part of the expression pipeline.<!-- -->Below we register a function which simply sleeps for given number of milliseconds to delay the execution and outputs its input as-is.
+```ts
+expressions.registerFunction({
+  name: 'sleep',
+  args: {
+    time: {
+      aliases: ['_'],
+      help: 'Time in milliseconds for how long to sleep',
+      types: ['number'],
+    },
+  },
+  help: '',
+  fn: async (input, args, context) => {
+    await new Promise(r => setTimeout(r, args.time));
+    return input;
+  },
+}
+
+```
+The actual function is defined in the <code>fn</code> key. The function can be \*async\*. It receives three arguments: (1) <code>input</code> is the output of the previous function or the initial input of the expression if the function is first in chain; (2) <code>args</code> are function arguments as defined in expression string, that can be edited by user (e.g in case of Canvas); (3) <code>context</code> is a shared object passed to all functions that can be used for side-effects. |
+|  [registerRenderer](./kibana-plugin-plugins-expressions-public.expressionsservice.registerrenderer.md) |  | <code>(definition: AnyExpressionRenderDefinition &#124; (() =&gt; AnyExpressionRenderDefinition)) =&gt; void</code> |  |
+|  [registerType](./kibana-plugin-plugins-expressions-public.expressionsservice.registertype.md) |  | <code>(typeDefinition: AnyExpressionTypeDefinition &#124; (() =&gt; AnyExpressionTypeDefinition)) =&gt; void</code> |  |
+|  [renderers](./kibana-plugin-plugins-expressions-public.expressionsservice.renderers.md) |  | <code>ExpressionRendererRegistry</code> |  |
+|  [run](./kibana-plugin-plugins-expressions-public.expressionsservice.run.md) |  | <code>ExpressionsServiceStart['run']</code> |  |
+
+## Methods
+
+|  Method | Modifiers | Description |
+|  --- | --- | --- |
+|  [setup()](./kibana-plugin-plugins-expressions-public.expressionsservice.setup.md) |  | Returns Kibana Platform \*setup\* life-cycle contract. Useful to return the same contract on server-side and browser-side. |
+|  [start()](./kibana-plugin-plugins-expressions-public.expressionsservice.start.md) |  | Returns Kibana Platform \*start\* life-cycle contract. Useful to return the same contract on server-side and browser-side. |
+|  [stop()](./kibana-plugin-plugins-expressions-public.expressionsservice.stop.md) |  |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.registerfunction.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.registerfunction.md
new file mode 100644
index 0000000000000..0653e68bb4837
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.registerfunction.md
@@ -0,0 +1,35 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md) &gt; [registerFunction](./kibana-plugin-plugins-expressions-public.expressionsservice.registerfunction.md)
+
+## ExpressionsService.registerFunction property
+
+Register an expression function, which will be possible to execute as part of the expression pipeline.
+
+Below we register a function which simply sleeps for given number of milliseconds to delay the execution and outputs its input as-is.
+
+```ts
+expressions.registerFunction({
+  name: 'sleep',
+  args: {
+    time: {
+      aliases: ['_'],
+      help: 'Time in milliseconds for how long to sleep',
+      types: ['number'],
+    },
+  },
+  help: '',
+  fn: async (input, args, context) => {
+    await new Promise(r => setTimeout(r, args.time));
+    return input;
+  },
+}
+
+```
+The actual function is defined in the `fn` key. The function can be \*async\*. It receives three arguments: (1) `input` is the output of the previous function or the initial input of the expression if the function is first in chain; (2) `args` are function arguments as defined in expression string, that can be edited by user (e.g in case of Canvas); (3) `context` is a shared object passed to all functions that can be used for side-effects.
+
+<b>Signature:</b>
+
+```typescript
+readonly registerFunction: (functionDefinition: AnyExpressionFunctionDefinition | (() => AnyExpressionFunctionDefinition)) => void;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.registerrenderer.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.registerrenderer.md
new file mode 100644
index 0000000000000..7aff36e7fd817
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.registerrenderer.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md) &gt; [registerRenderer](./kibana-plugin-plugins-expressions-public.expressionsservice.registerrenderer.md)
+
+## ExpressionsService.registerRenderer property
+
+<b>Signature:</b>
+
+```typescript
+readonly registerRenderer: (definition: AnyExpressionRenderDefinition | (() => AnyExpressionRenderDefinition)) => void;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.registertype.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.registertype.md
new file mode 100644
index 0000000000000..e6e71e5e7e7e9
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.registertype.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md) &gt; [registerType](./kibana-plugin-plugins-expressions-public.expressionsservice.registertype.md)
+
+## ExpressionsService.registerType property
+
+<b>Signature:</b>
+
+```typescript
+readonly registerType: (typeDefinition: AnyExpressionTypeDefinition | (() => AnyExpressionTypeDefinition)) => void;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.renderers.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.renderers.md
new file mode 100644
index 0000000000000..e43e9a21050ea
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.renderers.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md) &gt; [renderers](./kibana-plugin-plugins-expressions-public.expressionsservice.renderers.md)
+
+## ExpressionsService.renderers property
+
+<b>Signature:</b>
+
+```typescript
+readonly renderers: ExpressionRendererRegistry;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.run.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.run.md
new file mode 100644
index 0000000000000..47469167f6360
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.run.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md) &gt; [run](./kibana-plugin-plugins-expressions-public.expressionsservice.run.md)
+
+## ExpressionsService.run property
+
+<b>Signature:</b>
+
+```typescript
+readonly run: ExpressionsServiceStart['run'];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.setup.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.setup.md
new file mode 100644
index 0000000000000..a51f3f073d518
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.setup.md
@@ -0,0 +1,17 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md) &gt; [setup](./kibana-plugin-plugins-expressions-public.expressionsservice.setup.md)
+
+## ExpressionsService.setup() method
+
+Returns Kibana Platform \*setup\* life-cycle contract. Useful to return the same contract on server-side and browser-side.
+
+<b>Signature:</b>
+
+```typescript
+setup(): ExpressionsServiceSetup;
+```
+<b>Returns:</b>
+
+`ExpressionsServiceSetup`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.start.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.start.md
new file mode 100644
index 0000000000000..766d703a0729d
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.start.md
@@ -0,0 +1,17 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md) &gt; [start](./kibana-plugin-plugins-expressions-public.expressionsservice.start.md)
+
+## ExpressionsService.start() method
+
+Returns Kibana Platform \*start\* life-cycle contract. Useful to return the same contract on server-side and browser-side.
+
+<b>Signature:</b>
+
+```typescript
+start(): ExpressionsServiceStart;
+```
+<b>Returns:</b>
+
+`ExpressionsServiceStart`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.stop.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.stop.md
new file mode 100644
index 0000000000000..a32bb4a8bb009
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservice.stop.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md) &gt; [stop](./kibana-plugin-plugins-expressions-public.expressionsservice.stop.md)
+
+## ExpressionsService.stop() method
+
+<b>Signature:</b>
+
+```typescript
+stop(): void;
+```
+<b>Returns:</b>
+
+`void`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicesetup.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicesetup.md
new file mode 100644
index 0000000000000..4cf3fb9b53978
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicesetup.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsServiceSetup](./kibana-plugin-plugins-expressions-public.expressionsservicesetup.md)
+
+## ExpressionsServiceSetup type
+
+The public contract that `ExpressionsService` provides to other plugins in Kibana Platform in \*setup\* life-cycle.
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionsServiceSetup = Pick<ExpressionsService, 'getFunction' | 'getFunctions' | 'getRenderer' | 'getRenderers' | 'getType' | 'getTypes' | 'registerFunction' | 'registerRenderer' | 'registerType' | 'run' | 'fork'>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.execute.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.execute.md
new file mode 100644
index 0000000000000..b8211a6bff27c
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.execute.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsServiceStart](./kibana-plugin-plugins-expressions-public.expressionsservicestart.md) &gt; [execute](./kibana-plugin-plugins-expressions-public.expressionsservicestart.execute.md)
+
+## ExpressionsServiceStart.execute property
+
+Starts expression execution and immediately returns `ExecutionContract` instance that tracks the progress of the execution and can be used to interact with the execution.
+
+<b>Signature:</b>
+
+```typescript
+execute: <Input = unknown, Output = unknown, ExtraContext extends Record<string, unknown> = Record<string, unknown>>(ast: string | ExpressionAstExpression, input: Input, context?: ExtraContext) => ExecutionContract<ExtraContext, Input, Output>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.fork.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.fork.md
new file mode 100644
index 0000000000000..dd18daceb9539
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.fork.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsServiceStart](./kibana-plugin-plugins-expressions-public.expressionsservicestart.md) &gt; [fork](./kibana-plugin-plugins-expressions-public.expressionsservicestart.fork.md)
+
+## ExpressionsServiceStart.fork property
+
+Create a new instance of `ExpressionsService`<!-- -->. The new instance inherits all state of the original `ExpressionsService`<!-- -->, including all expression types, expression functions and context. Also, all new types and functions registered in the original services AFTER the forking event will be available in the forked instance. However, all new types and functions registered in the forked instances will NOT be available to the original service.
+
+<b>Signature:</b>
+
+```typescript
+fork: () => ExpressionsService;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.getfunction.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.getfunction.md
new file mode 100644
index 0000000000000..d1a9bbce2a27e
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.getfunction.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsServiceStart](./kibana-plugin-plugins-expressions-public.expressionsservicestart.md) &gt; [getFunction](./kibana-plugin-plugins-expressions-public.expressionsservicestart.getfunction.md)
+
+## ExpressionsServiceStart.getFunction property
+
+Get a registered `ExpressionFunction` by its name, which was registered using the `registerFunction` method. The returned `ExpressionFunction` instance is an internal representation of the function in Expressions service - do not mutate that object.
+
+<b>Signature:</b>
+
+```typescript
+getFunction: (name: string) => ReturnType<Executor['getFunction']>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.getrenderer.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.getrenderer.md
new file mode 100644
index 0000000000000..ef98fd633cb0c
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.getrenderer.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsServiceStart](./kibana-plugin-plugins-expressions-public.expressionsservicestart.md) &gt; [getRenderer](./kibana-plugin-plugins-expressions-public.expressionsservicestart.getrenderer.md)
+
+## ExpressionsServiceStart.getRenderer property
+
+Get a registered `ExpressionRenderer` by its name, which was registered using the `registerRenderer` method. The returned `ExpressionRenderer` instance is an internal representation of the renderer in Expressions service - do not mutate that object.
+
+<b>Signature:</b>
+
+```typescript
+getRenderer: (name: string) => ReturnType<ExpressionRendererRegistry['get']>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.gettype.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.gettype.md
new file mode 100644
index 0000000000000..e9ec1733513ba
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.gettype.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsServiceStart](./kibana-plugin-plugins-expressions-public.expressionsservicestart.md) &gt; [getType](./kibana-plugin-plugins-expressions-public.expressionsservicestart.gettype.md)
+
+## ExpressionsServiceStart.getType property
+
+Get a registered `ExpressionType` by its name, which was registered using the `registerType` method. The returned `ExpressionType` instance is an internal representation of the type in Expressions service - do not mutate that object.
+
+<b>Signature:</b>
+
+```typescript
+getType: (name: string) => ReturnType<Executor['getType']>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.md
new file mode 100644
index 0000000000000..34bf16c121326
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.md
@@ -0,0 +1,35 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsServiceStart](./kibana-plugin-plugins-expressions-public.expressionsservicestart.md)
+
+## ExpressionsServiceStart interface
+
+The public contract that `ExpressionsService` provides to other plugins in Kibana Platform in \*start\* life-cycle.
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionsServiceStart 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [execute](./kibana-plugin-plugins-expressions-public.expressionsservicestart.execute.md) | <code>&lt;Input = unknown, Output = unknown, ExtraContext extends Record&lt;string, unknown&gt; = Record&lt;string, unknown&gt;&gt;(ast: string &#124; ExpressionAstExpression, input: Input, context?: ExtraContext) =&gt; ExecutionContract&lt;ExtraContext, Input, Output&gt;</code> | Starts expression execution and immediately returns <code>ExecutionContract</code> instance that tracks the progress of the execution and can be used to interact with the execution. |
+|  [fork](./kibana-plugin-plugins-expressions-public.expressionsservicestart.fork.md) | <code>() =&gt; ExpressionsService</code> | Create a new instance of <code>ExpressionsService</code>. The new instance inherits all state of the original <code>ExpressionsService</code>, including all expression types, expression functions and context. Also, all new types and functions registered in the original services AFTER the forking event will be available in the forked instance. However, all new types and functions registered in the forked instances will NOT be available to the original service. |
+|  [getFunction](./kibana-plugin-plugins-expressions-public.expressionsservicestart.getfunction.md) | <code>(name: string) =&gt; ReturnType&lt;Executor['getFunction']&gt;</code> | Get a registered <code>ExpressionFunction</code> by its name, which was registered using the <code>registerFunction</code> method. The returned <code>ExpressionFunction</code> instance is an internal representation of the function in Expressions service - do not mutate that object. |
+|  [getRenderer](./kibana-plugin-plugins-expressions-public.expressionsservicestart.getrenderer.md) | <code>(name: string) =&gt; ReturnType&lt;ExpressionRendererRegistry['get']&gt;</code> | Get a registered <code>ExpressionRenderer</code> by its name, which was registered using the <code>registerRenderer</code> method. The returned <code>ExpressionRenderer</code> instance is an internal representation of the renderer in Expressions service - do not mutate that object. |
+|  [getType](./kibana-plugin-plugins-expressions-public.expressionsservicestart.gettype.md) | <code>(name: string) =&gt; ReturnType&lt;Executor['getType']&gt;</code> | Get a registered <code>ExpressionType</code> by its name, which was registered using the <code>registerType</code> method. The returned <code>ExpressionType</code> instance is an internal representation of the type in Expressions service - do not mutate that object. |
+|  [run](./kibana-plugin-plugins-expressions-public.expressionsservicestart.run.md) | <code>&lt;Input, Output, ExtraContext extends Record&lt;string, unknown&gt; = Record&lt;string, unknown&gt;&gt;(ast: string &#124; ExpressionAstExpression, input: Input, context?: ExtraContext) =&gt; Promise&lt;Output&gt;</code> | Executes expression string or a parsed expression AST and immediately returns the result.<!-- -->Below example will execute <code>sleep 100 &#124; clog</code> expression with <code>123</code> initial input to the first function.
+```ts
+expressions.run('sleep 100 | clog', 123);
+
+```
+- <code>sleep 100</code> will delay execution by 100 milliseconds and pass the <code>123</code> input as its output. - <code>clog</code> will print to console <code>123</code> and pass it as its output. - The final result of the execution will be <code>123</code>.<!-- -->Optionally, you can pass an object as the third argument which will be used to extend the <code>ExecutionContext</code>&amp;mdash;an object passed to each function as the third argument, that allows functions to perform side-effects.
+```ts
+expressions.run('...', null, { elasticsearchClient });
+
+```
+ |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.run.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.run.md
new file mode 100644
index 0000000000000..578c583624ad0
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicestart.run.md
@@ -0,0 +1,28 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsServiceStart](./kibana-plugin-plugins-expressions-public.expressionsservicestart.md) &gt; [run](./kibana-plugin-plugins-expressions-public.expressionsservicestart.run.md)
+
+## ExpressionsServiceStart.run property
+
+Executes expression string or a parsed expression AST and immediately returns the result.
+
+Below example will execute `sleep 100 | clog` expression with `123` initial input to the first function.
+
+```ts
+expressions.run('sleep 100 | clog', 123);
+
+```
+- `sleep 100` will delay execution by 100 milliseconds and pass the `123` input as its output. - `clog` will print to console `123` and pass it as its output. - The final result of the execution will be `123`<!-- -->.
+
+Optionally, you can pass an object as the third argument which will be used to extend the `ExecutionContext`<!-- -->&amp;mdash;an object passed to each function as the third argument, that allows functions to perform side-effects.
+
+```ts
+expressions.run('...', null, { elasticsearchClient });
+
+```
+
+<b>Signature:</b>
+
+```typescript
+run: <Input, Output, ExtraContext extends Record<string, unknown> = Record<string, unknown>>(ast: string | ExpressionAstExpression, input: Input, context?: ExtraContext) => Promise<Output>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionssetup.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionssetup.md
new file mode 100644
index 0000000000000..01a894ae8fba6
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionssetup.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsSetup](./kibana-plugin-plugins-expressions-public.expressionssetup.md)
+
+## ExpressionsSetup type
+
+Expressions public setup contract, extends [ExpressionsServiceSetup](./kibana-plugin-plugins-expressions-public.expressionsservicesetup.md)
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionsSetup = ExpressionsServiceSetup;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsstart.expressionloader.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsstart.expressionloader.md
new file mode 100644
index 0000000000000..b7226b12b0d2b
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsstart.expressionloader.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsStart](./kibana-plugin-plugins-expressions-public.expressionsstart.md) &gt; [ExpressionLoader](./kibana-plugin-plugins-expressions-public.expressionsstart.expressionloader.md)
+
+## ExpressionsStart.ExpressionLoader property
+
+<b>Signature:</b>
+
+```typescript
+ExpressionLoader: typeof ExpressionLoader;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsstart.expressionrenderhandler.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsstart.expressionrenderhandler.md
new file mode 100644
index 0000000000000..a78bb6f154c46
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsstart.expressionrenderhandler.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsStart](./kibana-plugin-plugins-expressions-public.expressionsstart.md) &gt; [ExpressionRenderHandler](./kibana-plugin-plugins-expressions-public.expressionsstart.expressionrenderhandler.md)
+
+## ExpressionsStart.ExpressionRenderHandler property
+
+<b>Signature:</b>
+
+```typescript
+ExpressionRenderHandler: typeof ExpressionRenderHandler;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsstart.loader.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsstart.loader.md
new file mode 100644
index 0000000000000..109d8e8bcab66
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsstart.loader.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsStart](./kibana-plugin-plugins-expressions-public.expressionsstart.md) &gt; [loader](./kibana-plugin-plugins-expressions-public.expressionsstart.loader.md)
+
+## ExpressionsStart.loader property
+
+<b>Signature:</b>
+
+```typescript
+loader: IExpressionLoader;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsstart.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsstart.md
new file mode 100644
index 0000000000000..ac4004590b5a6
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsstart.md
@@ -0,0 +1,24 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsStart](./kibana-plugin-plugins-expressions-public.expressionsstart.md)
+
+## ExpressionsStart interface
+
+Expressions public start contrect, extends 
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionsStart extends ExpressionsServiceStart 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [ExpressionLoader](./kibana-plugin-plugins-expressions-public.expressionsstart.expressionloader.md) | <code>typeof ExpressionLoader</code> |  |
+|  [ExpressionRenderHandler](./kibana-plugin-plugins-expressions-public.expressionsstart.expressionrenderhandler.md) | <code>typeof ExpressionRenderHandler</code> |  |
+|  [loader](./kibana-plugin-plugins-expressions-public.expressionsstart.loader.md) | <code>IExpressionLoader</code> |  |
+|  [ReactExpressionRenderer](./kibana-plugin-plugins-expressions-public.expressionsstart.reactexpressionrenderer.md) | <code>typeof ReactExpressionRenderer</code> |  |
+|  [render](./kibana-plugin-plugins-expressions-public.expressionsstart.render.md) | <code>typeof render</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsstart.reactexpressionrenderer.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsstart.reactexpressionrenderer.md
new file mode 100644
index 0000000000000..bbd7253a747c4
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsstart.reactexpressionrenderer.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsStart](./kibana-plugin-plugins-expressions-public.expressionsstart.md) &gt; [ReactExpressionRenderer](./kibana-plugin-plugins-expressions-public.expressionsstart.reactexpressionrenderer.md)
+
+## ExpressionsStart.ReactExpressionRenderer property
+
+<b>Signature:</b>
+
+```typescript
+ReactExpressionRenderer: typeof ReactExpressionRenderer;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsstart.render.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsstart.render.md
new file mode 100644
index 0000000000000..fcf279206119e
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsstart.render.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionsStart](./kibana-plugin-plugins-expressions-public.expressionsstart.md) &gt; [render](./kibana-plugin-plugins-expressions-public.expressionsstart.render.md)
+
+## ExpressionsStart.render property
+
+<b>Signature:</b>
+
+```typescript
+render: typeof render;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype._constructor_.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype._constructor_.md
new file mode 100644
index 0000000000000..2302be5643722
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype._constructor_.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-public.expressiontype.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-public.expressiontype._constructor_.md)
+
+## ExpressionType.(constructor)
+
+Constructs a new instance of the `ExpressionType` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(definition: AnyExpressionTypeDefinition);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  definition | <code>AnyExpressionTypeDefinition</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.castsfrom.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.castsfrom.md
new file mode 100644
index 0000000000000..e238db1b45086
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.castsfrom.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-public.expressiontype.md) &gt; [castsFrom](./kibana-plugin-plugins-expressions-public.expressiontype.castsfrom.md)
+
+## ExpressionType.castsFrom property
+
+<b>Signature:</b>
+
+```typescript
+castsFrom: (value: ExpressionValue) => boolean;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.caststo.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.caststo.md
new file mode 100644
index 0000000000000..36e03e6f3d53f
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.caststo.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-public.expressiontype.md) &gt; [castsTo](./kibana-plugin-plugins-expressions-public.expressiontype.caststo.md)
+
+## ExpressionType.castsTo property
+
+<b>Signature:</b>
+
+```typescript
+castsTo: (value: ExpressionValue) => boolean;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.create.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.create.md
new file mode 100644
index 0000000000000..e2da70b50b0d4
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.create.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-public.expressiontype.md) &gt; [create](./kibana-plugin-plugins-expressions-public.expressiontype.create.md)
+
+## ExpressionType.create property
+
+<b>Signature:</b>
+
+```typescript
+create: unknown;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.deserialize.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.deserialize.md
new file mode 100644
index 0000000000000..d47056817358c
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.deserialize.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-public.expressiontype.md) &gt; [deserialize](./kibana-plugin-plugins-expressions-public.expressiontype.deserialize.md)
+
+## ExpressionType.deserialize property
+
+<b>Signature:</b>
+
+```typescript
+deserialize?: (serialized: any) => ExpressionValue;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.from.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.from.md
new file mode 100644
index 0000000000000..51a36f614fbbf
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.from.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-public.expressiontype.md) &gt; [from](./kibana-plugin-plugins-expressions-public.expressiontype.from.md)
+
+## ExpressionType.from property
+
+<b>Signature:</b>
+
+```typescript
+from: (value: ExpressionValue, types: Record<string, ExpressionType>) => any;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.getfromfn.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.getfromfn.md
new file mode 100644
index 0000000000000..10d7bb4331916
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.getfromfn.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-public.expressiontype.md) &gt; [getFromFn](./kibana-plugin-plugins-expressions-public.expressiontype.getfromfn.md)
+
+## ExpressionType.getFromFn property
+
+<b>Signature:</b>
+
+```typescript
+getFromFn: (typeName: string) => undefined | ExpressionValueConverter<ExpressionValue, ExpressionValue>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.gettofn.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.gettofn.md
new file mode 100644
index 0000000000000..25b71163e5709
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.gettofn.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-public.expressiontype.md) &gt; [getToFn](./kibana-plugin-plugins-expressions-public.expressiontype.gettofn.md)
+
+## ExpressionType.getToFn property
+
+<b>Signature:</b>
+
+```typescript
+getToFn: (typeName: string) => undefined | ExpressionValueConverter<ExpressionValue, ExpressionValue>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.help.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.help.md
new file mode 100644
index 0000000000000..e27e1dea2a872
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.help.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-public.expressiontype.md) &gt; [help](./kibana-plugin-plugins-expressions-public.expressiontype.help.md)
+
+## ExpressionType.help property
+
+A short help text.
+
+<b>Signature:</b>
+
+```typescript
+help: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.md
new file mode 100644
index 0000000000000..acb72b796cf1d
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.md
@@ -0,0 +1,35 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-public.expressiontype.md)
+
+## ExpressionType class
+
+<b>Signature:</b>
+
+```typescript
+export declare class ExpressionType 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(definition)](./kibana-plugin-plugins-expressions-public.expressiontype._constructor_.md) |  | Constructs a new instance of the <code>ExpressionType</code> class |
+
+## Properties
+
+|  Property | Modifiers | Type | Description |
+|  --- | --- | --- | --- |
+|  [castsFrom](./kibana-plugin-plugins-expressions-public.expressiontype.castsfrom.md) |  | <code>(value: ExpressionValue) =&gt; boolean</code> |  |
+|  [castsTo](./kibana-plugin-plugins-expressions-public.expressiontype.caststo.md) |  | <code>(value: ExpressionValue) =&gt; boolean</code> |  |
+|  [create](./kibana-plugin-plugins-expressions-public.expressiontype.create.md) |  | <code>unknown</code> |  |
+|  [deserialize](./kibana-plugin-plugins-expressions-public.expressiontype.deserialize.md) |  | <code>(serialized: any) =&gt; ExpressionValue</code> |  |
+|  [from](./kibana-plugin-plugins-expressions-public.expressiontype.from.md) |  | <code>(value: ExpressionValue, types: Record&lt;string, ExpressionType&gt;) =&gt; any</code> |  |
+|  [getFromFn](./kibana-plugin-plugins-expressions-public.expressiontype.getfromfn.md) |  | <code>(typeName: string) =&gt; undefined &#124; ExpressionValueConverter&lt;ExpressionValue, ExpressionValue&gt;</code> |  |
+|  [getToFn](./kibana-plugin-plugins-expressions-public.expressiontype.gettofn.md) |  | <code>(typeName: string) =&gt; undefined &#124; ExpressionValueConverter&lt;ExpressionValue, ExpressionValue&gt;</code> |  |
+|  [help](./kibana-plugin-plugins-expressions-public.expressiontype.help.md) |  | <code>string</code> | A short help text. |
+|  [name](./kibana-plugin-plugins-expressions-public.expressiontype.name.md) |  | <code>string</code> |  |
+|  [serialize](./kibana-plugin-plugins-expressions-public.expressiontype.serialize.md) |  | <code>(value: ExpressionValue) =&gt; any</code> | Optional serialization (used when passing context around client/server). |
+|  [to](./kibana-plugin-plugins-expressions-public.expressiontype.to.md) |  | <code>(value: ExpressionValue, toTypeName: string, types: Record&lt;string, ExpressionType&gt;) =&gt; any</code> |  |
+|  [validate](./kibana-plugin-plugins-expressions-public.expressiontype.validate.md) |  | <code>(type: any) =&gt; void &#124; Error</code> | Type validation, useful for checking function output. |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.name.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.name.md
new file mode 100644
index 0000000000000..8d14f6e4f6bd8
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.name.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-public.expressiontype.md) &gt; [name](./kibana-plugin-plugins-expressions-public.expressiontype.name.md)
+
+## ExpressionType.name property
+
+<b>Signature:</b>
+
+```typescript
+name: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.serialize.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.serialize.md
new file mode 100644
index 0000000000000..cb4821b97e022
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.serialize.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-public.expressiontype.md) &gt; [serialize](./kibana-plugin-plugins-expressions-public.expressiontype.serialize.md)
+
+## ExpressionType.serialize property
+
+Optional serialization (used when passing context around client/server).
+
+<b>Signature:</b>
+
+```typescript
+serialize?: (value: ExpressionValue) => any;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.to.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.to.md
new file mode 100644
index 0000000000000..8045c5df638b0
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.to.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-public.expressiontype.md) &gt; [to](./kibana-plugin-plugins-expressions-public.expressiontype.to.md)
+
+## ExpressionType.to property
+
+<b>Signature:</b>
+
+```typescript
+to: (value: ExpressionValue, toTypeName: string, types: Record<string, ExpressionType>) => any;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.validate.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.validate.md
new file mode 100644
index 0000000000000..7214467b2b444
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontype.validate.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-public.expressiontype.md) &gt; [validate](./kibana-plugin-plugins-expressions-public.expressiontype.validate.md)
+
+## ExpressionType.validate property
+
+Type validation, useful for checking function output.
+
+<b>Signature:</b>
+
+```typescript
+validate: (type: any) => void | Error;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.deserialize.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.deserialize.md
new file mode 100644
index 0000000000000..75dac1e991f65
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.deserialize.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionTypeDefinition](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.md) &gt; [deserialize](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.deserialize.md)
+
+## ExpressionTypeDefinition.deserialize property
+
+<b>Signature:</b>
+
+```typescript
+deserialize?: (type: SerializedType) => Value;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.from.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.from.md
new file mode 100644
index 0000000000000..ac8920066eda7
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.from.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionTypeDefinition](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.md) &gt; [from](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.from.md)
+
+## ExpressionTypeDefinition.from property
+
+<b>Signature:</b>
+
+```typescript
+from?: {
+        [type: string]: ExpressionValueConverter<any, Value>;
+    };
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.help.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.help.md
new file mode 100644
index 0000000000000..ad5e5eb38fa72
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.help.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionTypeDefinition](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.md) &gt; [help](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.help.md)
+
+## ExpressionTypeDefinition.help property
+
+<b>Signature:</b>
+
+```typescript
+help?: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.md
new file mode 100644
index 0000000000000..8c183e9a6de80
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.md
@@ -0,0 +1,26 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionTypeDefinition](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.md)
+
+## ExpressionTypeDefinition interface
+
+A generic type which represents a custom Expression Type Definition that's registered to the Interpreter.
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionTypeDefinition<Name extends string, Value extends ExpressionValueUnboxed | ExpressionValueBoxed, SerializedType = undefined> 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [deserialize](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.deserialize.md) | <code>(type: SerializedType) =&gt; Value</code> |  |
+|  [from](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.from.md) | <code>{</code><br/><code>        [type: string]: ExpressionValueConverter&lt;any, Value&gt;;</code><br/><code>    }</code> |  |
+|  [help](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.help.md) | <code>string</code> |  |
+|  [name](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.name.md) | <code>Name</code> |  |
+|  [serialize](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.serialize.md) | <code>(type: Value) =&gt; SerializedType</code> |  |
+|  [to](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.to.md) | <code>{</code><br/><code>        [type: string]: ExpressionValueConverter&lt;Value, any&gt;;</code><br/><code>    }</code> |  |
+|  [validate](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.validate.md) | <code>(type: any) =&gt; void &#124; Error</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.name.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.name.md
new file mode 100644
index 0000000000000..eb79d01040373
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.name.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionTypeDefinition](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.md) &gt; [name](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.name.md)
+
+## ExpressionTypeDefinition.name property
+
+<b>Signature:</b>
+
+```typescript
+name: Name;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.serialize.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.serialize.md
new file mode 100644
index 0000000000000..5881ddbe5a6c4
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.serialize.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionTypeDefinition](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.md) &gt; [serialize](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.serialize.md)
+
+## ExpressionTypeDefinition.serialize property
+
+<b>Signature:</b>
+
+```typescript
+serialize?: (type: Value) => SerializedType;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.to.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.to.md
new file mode 100644
index 0000000000000..282cdcdfb342d
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.to.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionTypeDefinition](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.md) &gt; [to](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.to.md)
+
+## ExpressionTypeDefinition.to property
+
+<b>Signature:</b>
+
+```typescript
+to?: {
+        [type: string]: ExpressionValueConverter<Value, any>;
+    };
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.validate.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.validate.md
new file mode 100644
index 0000000000000..67d5e832c6284
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypedefinition.validate.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionTypeDefinition](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.md) &gt; [validate](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.validate.md)
+
+## ExpressionTypeDefinition.validate property
+
+<b>Signature:</b>
+
+```typescript
+validate?: (type: any) => void | Error;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypestyle.css.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypestyle.css.md
new file mode 100644
index 0000000000000..ca8e881ef7e46
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypestyle.css.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionTypeStyle](./kibana-plugin-plugins-expressions-public.expressiontypestyle.md) &gt; [css](./kibana-plugin-plugins-expressions-public.expressiontypestyle.css.md)
+
+## ExpressionTypeStyle.css property
+
+<b>Signature:</b>
+
+```typescript
+css: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypestyle.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypestyle.md
new file mode 100644
index 0000000000000..4e1cc86699f2d
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypestyle.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionTypeStyle](./kibana-plugin-plugins-expressions-public.expressiontypestyle.md)
+
+## ExpressionTypeStyle interface
+
+An object that represents style information, typically CSS.
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionTypeStyle 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [css](./kibana-plugin-plugins-expressions-public.expressiontypestyle.css.md) | <code>string</code> |  |
+|  [spec](./kibana-plugin-plugins-expressions-public.expressiontypestyle.spec.md) | <code>CSSStyle</code> |  |
+|  [type](./kibana-plugin-plugins-expressions-public.expressiontypestyle.type.md) | <code>'style'</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypestyle.spec.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypestyle.spec.md
new file mode 100644
index 0000000000000..e732893366a36
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypestyle.spec.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionTypeStyle](./kibana-plugin-plugins-expressions-public.expressiontypestyle.md) &gt; [spec](./kibana-plugin-plugins-expressions-public.expressiontypestyle.spec.md)
+
+## ExpressionTypeStyle.spec property
+
+<b>Signature:</b>
+
+```typescript
+spec: CSSStyle;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypestyle.type.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypestyle.type.md
new file mode 100644
index 0000000000000..01dd9b0da1072
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressiontypestyle.type.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionTypeStyle](./kibana-plugin-plugins-expressions-public.expressiontypestyle.md) &gt; [type](./kibana-plugin-plugins-expressions-public.expressiontypestyle.type.md)
+
+## ExpressionTypeStyle.type property
+
+<b>Signature:</b>
+
+```typescript
+type: 'style';
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvalue.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvalue.md
new file mode 100644
index 0000000000000..53ab339df902a
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvalue.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionValue](./kibana-plugin-plugins-expressions-public.expressionvalue.md)
+
+## ExpressionValue type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionValue = ExpressionValueUnboxed | ExpressionValueBoxed;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvalueboxed.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvalueboxed.md
new file mode 100644
index 0000000000000..6d8f060d4f91f
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvalueboxed.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionValueBoxed](./kibana-plugin-plugins-expressions-public.expressionvalueboxed.md)
+
+## ExpressionValueBoxed type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionValueBoxed<Type extends string = string, Value extends object = object> = {
+    type: Type;
+} & Value;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvalueconverter.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvalueconverter.md
new file mode 100644
index 0000000000000..95e69645b53ee
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvalueconverter.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionValueConverter](./kibana-plugin-plugins-expressions-public.expressionvalueconverter.md)
+
+## ExpressionValueConverter type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionValueConverter<I extends ExpressionValue, O extends ExpressionValue> = (input: I, availableTypes: Record<string, any>) => O;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvalueerror.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvalueerror.md
new file mode 100644
index 0000000000000..4a714fe62424f
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvalueerror.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionValueError](./kibana-plugin-plugins-expressions-public.expressionvalueerror.md)
+
+## ExpressionValueError type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionValueError = ExpressionValueBoxed<'error', {
+    error: {
+        message: string;
+        type?: string;
+        name?: string;
+        stack?: string;
+        original?: Error;
+    };
+    info?: unknown;
+}>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvaluefilter.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvaluefilter.md
new file mode 100644
index 0000000000000..07c1bfe9a96d6
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvaluefilter.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionValueFilter](./kibana-plugin-plugins-expressions-public.expressionvaluefilter.md)
+
+## ExpressionValueFilter type
+
+Represents an object that is a Filter.
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionValueFilter = ExpressionValueBoxed<'filter', {
+    filterType?: string;
+    value?: string;
+    column?: string;
+    and: ExpressionValueFilter[];
+    to?: string;
+    from?: string;
+    query?: string | null;
+}>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvaluenum.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvaluenum.md
new file mode 100644
index 0000000000000..fc92777ffd5b6
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvaluenum.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionValueNum](./kibana-plugin-plugins-expressions-public.expressionvaluenum.md)
+
+## ExpressionValueNum type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionValueNum = ExpressionValueBoxed<'num', {
+    value: number;
+}>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvaluerender.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvaluerender.md
new file mode 100644
index 0000000000000..be9e7f859daec
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvaluerender.md
@@ -0,0 +1,16 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionValueRender](./kibana-plugin-plugins-expressions-public.expressionvaluerender.md)
+
+## ExpressionValueRender type
+
+Represents an object that is intended to be rendered.
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionValueRender<T> = ExpressionValueBoxed<typeof name, {
+    as: string;
+    value: T;
+}>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvaluesearchcontext.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvaluesearchcontext.md
new file mode 100644
index 0000000000000..bf64dfe4c86f7
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvaluesearchcontext.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionValueSearchContext](./kibana-plugin-plugins-expressions-public.expressionvaluesearchcontext.md)
+
+## ExpressionValueSearchContext type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionValueSearchContext = ExpressionValueBoxed<'kibana_context', ExecutionContextSearch>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvalueunboxed.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvalueunboxed.md
new file mode 100644
index 0000000000000..fbc37fe667d5e
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionvalueunboxed.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionValueUnboxed](./kibana-plugin-plugins-expressions-public.expressionvalueunboxed.md)
+
+## ExpressionValueUnboxed type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionValueUnboxed = any;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.font.label.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.font.label.md
new file mode 100644
index 0000000000000..87294ce59feb6
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.font.label.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Font](./kibana-plugin-plugins-expressions-public.font.md) &gt; [label](./kibana-plugin-plugins-expressions-public.font.label.md)
+
+## Font.label property
+
+<b>Signature:</b>
+
+```typescript
+label: FontLabel;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.font.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.font.md
new file mode 100644
index 0000000000000..ef63d28fe6fba
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.font.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Font](./kibana-plugin-plugins-expressions-public.font.md)
+
+## Font interface
+
+An interface representing a font in Canvas, with a textual label and the CSS `font-value`<!-- -->.
+
+<b>Signature:</b>
+
+```typescript
+export interface Font 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [label](./kibana-plugin-plugins-expressions-public.font.label.md) | <code>FontLabel</code> |  |
+|  [value](./kibana-plugin-plugins-expressions-public.font.value.md) | <code>FontValue</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.font.value.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.font.value.md
new file mode 100644
index 0000000000000..cada244174785
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.font.value.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Font](./kibana-plugin-plugins-expressions-public.font.md) &gt; [value](./kibana-plugin-plugins-expressions-public.font.value.md)
+
+## Font.value property
+
+<b>Signature:</b>
+
+```typescript
+value: FontValue;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.fontlabel.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.fontlabel.md
new file mode 100644
index 0000000000000..5af3427730ad1
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.fontlabel.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [FontLabel](./kibana-plugin-plugins-expressions-public.fontlabel.md)
+
+## FontLabel type
+
+This type contains a unions of all supported font labels, or the the name of the font the user would see in a UI.
+
+<b>Signature:</b>
+
+```typescript
+export declare type FontLabel = typeof fonts[number]['label'];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.fontstyle.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.fontstyle.md
new file mode 100644
index 0000000000000..9f70d91c7ac9b
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.fontstyle.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [FontStyle](./kibana-plugin-plugins-expressions-public.fontstyle.md)
+
+## FontStyle enum
+
+Enum of supported CSS `font-style` properties.
+
+<b>Signature:</b>
+
+```typescript
+export declare enum FontStyle 
+```
+
+## Enumeration Members
+
+|  Member | Value | Description |
+|  --- | --- | --- |
+|  ITALIC | <code>&quot;italic&quot;</code> |  |
+|  NORMAL | <code>&quot;normal&quot;</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.fontvalue.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.fontvalue.md
new file mode 100644
index 0000000000000..f03c9b61cb733
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.fontvalue.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [FontValue](./kibana-plugin-plugins-expressions-public.fontvalue.md)
+
+## FontValue type
+
+This type contains a union of all supported font values, equivalent to the CSS `font-value` property.
+
+<b>Signature:</b>
+
+```typescript
+export declare type FontValue = typeof fonts[number]['value'];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.fontweight.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.fontweight.md
new file mode 100644
index 0000000000000..43388a3de11cc
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.fontweight.md
@@ -0,0 +1,32 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [FontWeight](./kibana-plugin-plugins-expressions-public.fontweight.md)
+
+## FontWeight enum
+
+Enum of supported CSS `font-weight` properties.
+
+<b>Signature:</b>
+
+```typescript
+export declare enum FontWeight 
+```
+
+## Enumeration Members
+
+|  Member | Value | Description |
+|  --- | --- | --- |
+|  BOLD | <code>&quot;bold&quot;</code> |  |
+|  BOLDER | <code>&quot;bolder&quot;</code> |  |
+|  EIGHT | <code>&quot;800&quot;</code> |  |
+|  FIVE | <code>&quot;500&quot;</code> |  |
+|  FOUR | <code>&quot;400&quot;</code> |  |
+|  LIGHTER | <code>&quot;lighter&quot;</code> |  |
+|  NINE | <code>&quot;900&quot;</code> |  |
+|  NORMAL | <code>&quot;normal&quot;</code> |  |
+|  ONE | <code>&quot;100&quot;</code> |  |
+|  SEVEN | <code>&quot;700&quot;</code> |  |
+|  SIX | <code>&quot;600&quot;</code> |  |
+|  THREE | <code>&quot;300&quot;</code> |  |
+|  TWO | <code>&quot;200&quot;</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.format.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.format.md
new file mode 100644
index 0000000000000..27a9690e6fb0d
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.format.md
@@ -0,0 +1,23 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [format](./kibana-plugin-plugins-expressions-public.format.md)
+
+## format() function
+
+<b>Signature:</b>
+
+```typescript
+export declare function format<T extends ExpressionAstExpression | ExpressionAstArgument>(ast: T, type: T extends ExpressionAstExpression ? 'expression' : 'argument'): string;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  ast | <code>T</code> |  |
+|  type | <code>T extends ExpressionAstExpression ? 'expression' : 'argument'</code> |  |
+
+<b>Returns:</b>
+
+`string`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.formatexpression.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.formatexpression.md
new file mode 100644
index 0000000000000..425aa9c6171fc
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.formatexpression.md
@@ -0,0 +1,24 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [formatExpression](./kibana-plugin-plugins-expressions-public.formatexpression.md)
+
+## formatExpression() function
+
+Given expression pipeline AST, returns formatted string.
+
+<b>Signature:</b>
+
+```typescript
+export declare function formatExpression(ast: ExpressionAstExpression): string;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  ast | <code>ExpressionAstExpression</code> |  |
+
+<b>Returns:</b>
+
+`string`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.functionsregistry._constructor_.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.functionsregistry._constructor_.md
new file mode 100644
index 0000000000000..2ab299e3d32f4
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.functionsregistry._constructor_.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [FunctionsRegistry](./kibana-plugin-plugins-expressions-public.functionsregistry.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-public.functionsregistry._constructor_.md)
+
+## FunctionsRegistry.(constructor)
+
+Constructs a new instance of the `FunctionsRegistry` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(executor: Executor<any>);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  executor | <code>Executor&lt;any&gt;</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.functionsregistry.get.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.functionsregistry.get.md
new file mode 100644
index 0000000000000..3ed2807028299
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.functionsregistry.get.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [FunctionsRegistry](./kibana-plugin-plugins-expressions-public.functionsregistry.md) &gt; [get](./kibana-plugin-plugins-expressions-public.functionsregistry.get.md)
+
+## FunctionsRegistry.get() method
+
+<b>Signature:</b>
+
+```typescript
+get(id: string): ExpressionFunction | null;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  id | <code>string</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionFunction | null`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.functionsregistry.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.functionsregistry.md
new file mode 100644
index 0000000000000..b32623934ee92
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.functionsregistry.md
@@ -0,0 +1,27 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [FunctionsRegistry](./kibana-plugin-plugins-expressions-public.functionsregistry.md)
+
+## FunctionsRegistry class
+
+<b>Signature:</b>
+
+```typescript
+export declare class FunctionsRegistry implements IRegistry<ExpressionFunction> 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(executor)](./kibana-plugin-plugins-expressions-public.functionsregistry._constructor_.md) |  | Constructs a new instance of the <code>FunctionsRegistry</code> class |
+
+## Methods
+
+|  Method | Modifiers | Description |
+|  --- | --- | --- |
+|  [get(id)](./kibana-plugin-plugins-expressions-public.functionsregistry.get.md) |  |  |
+|  [register(functionDefinition)](./kibana-plugin-plugins-expressions-public.functionsregistry.register.md) |  |  |
+|  [toArray()](./kibana-plugin-plugins-expressions-public.functionsregistry.toarray.md) |  |  |
+|  [toJS()](./kibana-plugin-plugins-expressions-public.functionsregistry.tojs.md) |  |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.functionsregistry.register.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.functionsregistry.register.md
new file mode 100644
index 0000000000000..32f7f389e8958
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.functionsregistry.register.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [FunctionsRegistry](./kibana-plugin-plugins-expressions-public.functionsregistry.md) &gt; [register](./kibana-plugin-plugins-expressions-public.functionsregistry.register.md)
+
+## FunctionsRegistry.register() method
+
+<b>Signature:</b>
+
+```typescript
+register(functionDefinition: AnyExpressionFunctionDefinition | (() => AnyExpressionFunctionDefinition)): void;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  functionDefinition | <code>AnyExpressionFunctionDefinition &#124; (() =&gt; AnyExpressionFunctionDefinition)</code> |  |
+
+<b>Returns:</b>
+
+`void`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.functionsregistry.toarray.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.functionsregistry.toarray.md
new file mode 100644
index 0000000000000..5bc482097a175
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.functionsregistry.toarray.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [FunctionsRegistry](./kibana-plugin-plugins-expressions-public.functionsregistry.md) &gt; [toArray](./kibana-plugin-plugins-expressions-public.functionsregistry.toarray.md)
+
+## FunctionsRegistry.toArray() method
+
+<b>Signature:</b>
+
+```typescript
+toArray(): ExpressionFunction[];
+```
+<b>Returns:</b>
+
+`ExpressionFunction[]`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.functionsregistry.tojs.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.functionsregistry.tojs.md
new file mode 100644
index 0000000000000..d6790fb8f726e
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.functionsregistry.tojs.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [FunctionsRegistry](./kibana-plugin-plugins-expressions-public.functionsregistry.md) &gt; [toJS](./kibana-plugin-plugins-expressions-public.functionsregistry.tojs.md)
+
+## FunctionsRegistry.toJS() method
+
+<b>Signature:</b>
+
+```typescript
+toJS(): Record<string, ExpressionFunction>;
+```
+<b>Returns:</b>
+
+`Record<string, ExpressionFunction>`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.context.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.context.md
new file mode 100644
index 0000000000000..40dcf07667b1b
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.context.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IExpressionLoaderParams](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.md) &gt; [context](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.context.md)
+
+## IExpressionLoaderParams.context property
+
+<b>Signature:</b>
+
+```typescript
+context?: ExpressionValue;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.customfunctions.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.customfunctions.md
new file mode 100644
index 0000000000000..00ff3d498eb5c
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.customfunctions.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IExpressionLoaderParams](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.md) &gt; [customFunctions](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.customfunctions.md)
+
+## IExpressionLoaderParams.customFunctions property
+
+<b>Signature:</b>
+
+```typescript
+customFunctions?: [];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.customrenderers.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.customrenderers.md
new file mode 100644
index 0000000000000..72b82e2d41b05
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.customrenderers.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IExpressionLoaderParams](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.md) &gt; [customRenderers](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.customrenderers.md)
+
+## IExpressionLoaderParams.customRenderers property
+
+<b>Signature:</b>
+
+```typescript
+customRenderers?: [];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.disablecaching.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.disablecaching.md
new file mode 100644
index 0000000000000..62483016d3aee
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.disablecaching.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IExpressionLoaderParams](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.md) &gt; [disableCaching](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.disablecaching.md)
+
+## IExpressionLoaderParams.disableCaching property
+
+<b>Signature:</b>
+
+```typescript
+disableCaching?: boolean;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.inspectoradapters.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.inspectoradapters.md
new file mode 100644
index 0000000000000..52f2a6e56d133
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.inspectoradapters.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IExpressionLoaderParams](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.md) &gt; [inspectorAdapters](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.inspectoradapters.md)
+
+## IExpressionLoaderParams.inspectorAdapters property
+
+<b>Signature:</b>
+
+```typescript
+inspectorAdapters?: Adapters;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.md
new file mode 100644
index 0000000000000..b8a174f93fb99
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.md
@@ -0,0 +1,26 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IExpressionLoaderParams](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.md)
+
+## IExpressionLoaderParams interface
+
+<b>Signature:</b>
+
+```typescript
+export interface IExpressionLoaderParams 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [context](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.context.md) | <code>ExpressionValue</code> |  |
+|  [customFunctions](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.customfunctions.md) | <code>[]</code> |  |
+|  [customRenderers](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.customrenderers.md) | <code>[]</code> |  |
+|  [disableCaching](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.disablecaching.md) | <code>boolean</code> |  |
+|  [inspectorAdapters](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.inspectoradapters.md) | <code>Adapters</code> |  |
+|  [onRenderError](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.onrendererror.md) | <code>RenderErrorHandlerFnType</code> |  |
+|  [searchContext](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.searchcontext.md) | <code>ExecutionContextSearch</code> |  |
+|  [uiState](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.uistate.md) | <code>unknown</code> |  |
+|  [variables](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.variables.md) | <code>Record&lt;string, any&gt;</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.onrendererror.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.onrendererror.md
new file mode 100644
index 0000000000000..f45a9c76242c4
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.onrendererror.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IExpressionLoaderParams](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.md) &gt; [onRenderError](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.onrendererror.md)
+
+## IExpressionLoaderParams.onRenderError property
+
+<b>Signature:</b>
+
+```typescript
+onRenderError?: RenderErrorHandlerFnType;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.searchcontext.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.searchcontext.md
new file mode 100644
index 0000000000000..523d0c562f7ca
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.searchcontext.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IExpressionLoaderParams](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.md) &gt; [searchContext](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.searchcontext.md)
+
+## IExpressionLoaderParams.searchContext property
+
+<b>Signature:</b>
+
+```typescript
+searchContext?: ExecutionContextSearch;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.uistate.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.uistate.md
new file mode 100644
index 0000000000000..dca5032dabc78
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.uistate.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IExpressionLoaderParams](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.md) &gt; [uiState](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.uistate.md)
+
+## IExpressionLoaderParams.uiState property
+
+<b>Signature:</b>
+
+```typescript
+uiState?: unknown;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.variables.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.variables.md
new file mode 100644
index 0000000000000..0a04671919bd0
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iexpressionloaderparams.variables.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IExpressionLoaderParams](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.md) &gt; [variables](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.variables.md)
+
+## IExpressionLoaderParams.variables property
+
+<b>Signature:</b>
+
+```typescript
+variables?: Record<string, any>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.done.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.done.md
new file mode 100644
index 0000000000000..533cf498d72cf
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.done.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IInterpreterRenderHandlers](./kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.md) &gt; [done](./kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.done.md)
+
+## IInterpreterRenderHandlers.done property
+
+Done increments the number of rendering successes
+
+<b>Signature:</b>
+
+```typescript
+done: () => void;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.event.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.event.md
new file mode 100644
index 0000000000000..476167965927d
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.event.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IInterpreterRenderHandlers](./kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.md) &gt; [event](./kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.event.md)
+
+## IInterpreterRenderHandlers.event property
+
+<b>Signature:</b>
+
+```typescript
+event: (event: any) => void;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.md
new file mode 100644
index 0000000000000..9dbd18ae687b4
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IInterpreterRenderHandlers](./kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.md)
+
+## IInterpreterRenderHandlers interface
+
+<b>Signature:</b>
+
+```typescript
+export interface IInterpreterRenderHandlers 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [done](./kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.done.md) | <code>() =&gt; void</code> | Done increments the number of rendering successes |
+|  [event](./kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.event.md) | <code>(event: any) =&gt; void</code> |  |
+|  [onDestroy](./kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.ondestroy.md) | <code>(fn: () =&gt; void) =&gt; void</code> |  |
+|  [reload](./kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.reload.md) | <code>() =&gt; void</code> |  |
+|  [update](./kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.update.md) | <code>(params: any) =&gt; void</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.ondestroy.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.ondestroy.md
new file mode 100644
index 0000000000000..b68c2023fdc8a
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.ondestroy.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IInterpreterRenderHandlers](./kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.md) &gt; [onDestroy](./kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.ondestroy.md)
+
+## IInterpreterRenderHandlers.onDestroy property
+
+<b>Signature:</b>
+
+```typescript
+onDestroy: (fn: () => void) => void;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.reload.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.reload.md
new file mode 100644
index 0000000000000..0acd440e84f12
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.reload.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IInterpreterRenderHandlers](./kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.md) &gt; [reload](./kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.reload.md)
+
+## IInterpreterRenderHandlers.reload property
+
+<b>Signature:</b>
+
+```typescript
+reload: () => void;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.update.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.update.md
new file mode 100644
index 0000000000000..28fcb58fb3c10
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.update.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IInterpreterRenderHandlers](./kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.md) &gt; [update](./kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.update.md)
+
+## IInterpreterRenderHandlers.update property
+
+<b>Signature:</b>
+
+```typescript
+update: (params: any) => void;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.interpretererrortype.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.interpretererrortype.md
new file mode 100644
index 0000000000000..8cb346eda4d74
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.interpretererrortype.md
@@ -0,0 +1,16 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [InterpreterErrorType](./kibana-plugin-plugins-expressions-public.interpretererrortype.md)
+
+## InterpreterErrorType type
+
+> Warning: This API is now obsolete.
+> 
+> Exported for backwards compatibility.
+> 
+
+<b>Signature:</b>
+
+```typescript
+export declare type InterpreterErrorType = ExpressionValueError;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iregistry.get.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iregistry.get.md
new file mode 100644
index 0000000000000..9aa696869eaa3
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iregistry.get.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IRegistry](./kibana-plugin-plugins-expressions-public.iregistry.md) &gt; [get](./kibana-plugin-plugins-expressions-public.iregistry.get.md)
+
+## IRegistry.get() method
+
+<b>Signature:</b>
+
+```typescript
+get(id: string): T | null;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  id | <code>string</code> |  |
+
+<b>Returns:</b>
+
+`T | null`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iregistry.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iregistry.md
new file mode 100644
index 0000000000000..64991d90f2ae0
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iregistry.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IRegistry](./kibana-plugin-plugins-expressions-public.iregistry.md)
+
+## IRegistry interface
+
+<b>Signature:</b>
+
+```typescript
+export interface IRegistry<T> 
+```
+
+## Methods
+
+|  Method | Description |
+|  --- | --- |
+|  [get(id)](./kibana-plugin-plugins-expressions-public.iregistry.get.md) |  |
+|  [toArray()](./kibana-plugin-plugins-expressions-public.iregistry.toarray.md) |  |
+|  [toJS()](./kibana-plugin-plugins-expressions-public.iregistry.tojs.md) |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iregistry.toarray.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iregistry.toarray.md
new file mode 100644
index 0000000000000..36b16ca48323f
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iregistry.toarray.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IRegistry](./kibana-plugin-plugins-expressions-public.iregistry.md) &gt; [toArray](./kibana-plugin-plugins-expressions-public.iregistry.toarray.md)
+
+## IRegistry.toArray() method
+
+<b>Signature:</b>
+
+```typescript
+toArray(): T[];
+```
+<b>Returns:</b>
+
+`T[]`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iregistry.tojs.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iregistry.tojs.md
new file mode 100644
index 0000000000000..2f7a3597c1f02
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.iregistry.tojs.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [IRegistry](./kibana-plugin-plugins-expressions-public.iregistry.md) &gt; [toJS](./kibana-plugin-plugins-expressions-public.iregistry.tojs.md)
+
+## IRegistry.toJS() method
+
+<b>Signature:</b>
+
+```typescript
+toJS(): Record<string, T>;
+```
+<b>Returns:</b>
+
+`Record<string, T>`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.isexpressionastbuilder.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.isexpressionastbuilder.md
new file mode 100644
index 0000000000000..f35e7122caeb5
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.isexpressionastbuilder.md
@@ -0,0 +1,28 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [isExpressionAstBuilder](./kibana-plugin-plugins-expressions-public.isexpressionastbuilder.md)
+
+## isExpressionAstBuilder() function
+
+Type guard that checks whether a given value is an `ExpressionAstExpressionBuilder`<!-- -->. This is useful when working with subexpressions, where you might be retrieving a function argument, and need to know whether it is an expression builder instance which you can perform operations on.
+
+<b>Signature:</b>
+
+```typescript
+export declare function isExpressionAstBuilder(val: any): val is ExpressionAstExpressionBuilder;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  val | <code>any</code> |  |
+
+<b>Returns:</b>
+
+`val is ExpressionAstExpressionBuilder`
+
+## Example
+
+const arg = myFunction.getArgument('foo'); if (isExpressionAstBuilder(foo)) { foo.toAst(); }
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibana_context_name.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibana_context_name.md
new file mode 100644
index 0000000000000..e568db84f383d
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibana_context_name.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [KIBANA\_CONTEXT\_NAME](./kibana-plugin-plugins-expressions-public.kibana_context_name.md)
+
+## KIBANA\_CONTEXT\_NAME type
+
+<b>Signature:</b>
+
+```typescript
+export declare type KIBANA_CONTEXT_NAME = 'kibana_context';
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanacontext.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanacontext.md
new file mode 100644
index 0000000000000..108533e8de357
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanacontext.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [KibanaContext](./kibana-plugin-plugins-expressions-public.kibanacontext.md)
+
+## KibanaContext type
+
+<b>Signature:</b>
+
+```typescript
+export declare type KibanaContext = ExpressionValueSearchContext;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatable.columns.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatable.columns.md
new file mode 100644
index 0000000000000..c8aa768a883d6
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatable.columns.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [KibanaDatatable](./kibana-plugin-plugins-expressions-public.kibanadatatable.md) &gt; [columns](./kibana-plugin-plugins-expressions-public.kibanadatatable.columns.md)
+
+## KibanaDatatable.columns property
+
+<b>Signature:</b>
+
+```typescript
+columns: KibanaDatatableColumn[];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatable.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatable.md
new file mode 100644
index 0000000000000..4ea1d6f42b66d
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatable.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [KibanaDatatable](./kibana-plugin-plugins-expressions-public.kibanadatatable.md)
+
+## KibanaDatatable interface
+
+<b>Signature:</b>
+
+```typescript
+export interface KibanaDatatable 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [columns](./kibana-plugin-plugins-expressions-public.kibanadatatable.columns.md) | <code>KibanaDatatableColumn[]</code> |  |
+|  [rows](./kibana-plugin-plugins-expressions-public.kibanadatatable.rows.md) | <code>KibanaDatatableRow[]</code> |  |
+|  [type](./kibana-plugin-plugins-expressions-public.kibanadatatable.type.md) | <code>typeof name</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatable.rows.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatable.rows.md
new file mode 100644
index 0000000000000..43f3243dc4fa7
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatable.rows.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [KibanaDatatable](./kibana-plugin-plugins-expressions-public.kibanadatatable.md) &gt; [rows](./kibana-plugin-plugins-expressions-public.kibanadatatable.rows.md)
+
+## KibanaDatatable.rows property
+
+<b>Signature:</b>
+
+```typescript
+rows: KibanaDatatableRow[];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatable.type.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatable.type.md
new file mode 100644
index 0000000000000..996f59cbb77a1
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatable.type.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [KibanaDatatable](./kibana-plugin-plugins-expressions-public.kibanadatatable.md) &gt; [type](./kibana-plugin-plugins-expressions-public.kibanadatatable.type.md)
+
+## KibanaDatatable.type property
+
+<b>Signature:</b>
+
+```typescript
+type: typeof name;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.formathint.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.formathint.md
new file mode 100644
index 0000000000000..b517c1610261b
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.formathint.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [KibanaDatatableColumn](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.md) &gt; [formatHint](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.formathint.md)
+
+## KibanaDatatableColumn.formatHint property
+
+<b>Signature:</b>
+
+```typescript
+formatHint?: SerializedFieldFormat;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.id.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.id.md
new file mode 100644
index 0000000000000..e7d43190589a7
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.id.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [KibanaDatatableColumn](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.md) &gt; [id](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.id.md)
+
+## KibanaDatatableColumn.id property
+
+<b>Signature:</b>
+
+```typescript
+id: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.md
new file mode 100644
index 0000000000000..138c19f0ec7bd
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [KibanaDatatableColumn](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.md)
+
+## KibanaDatatableColumn interface
+
+<b>Signature:</b>
+
+```typescript
+export interface KibanaDatatableColumn 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [formatHint](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.formathint.md) | <code>SerializedFieldFormat</code> |  |
+|  [id](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.id.md) | <code>string</code> |  |
+|  [meta](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.meta.md) | <code>KibanaDatatableColumnMeta</code> |  |
+|  [name](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.name.md) | <code>string</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.meta.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.meta.md
new file mode 100644
index 0000000000000..df2d09bf3cc55
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.meta.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [KibanaDatatableColumn](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.md) &gt; [meta](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.meta.md)
+
+## KibanaDatatableColumn.meta property
+
+<b>Signature:</b>
+
+```typescript
+meta?: KibanaDatatableColumnMeta;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.name.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.name.md
new file mode 100644
index 0000000000000..841ad67f3f521
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.name.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [KibanaDatatableColumn](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.md) &gt; [name](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.name.md)
+
+## KibanaDatatableColumn.name property
+
+<b>Signature:</b>
+
+```typescript
+name: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.aggconfigparams.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.aggconfigparams.md
new file mode 100644
index 0000000000000..2ec6edda4cbca
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.aggconfigparams.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [KibanaDatatableColumnMeta](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.md) &gt; [aggConfigParams](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.aggconfigparams.md)
+
+## KibanaDatatableColumnMeta.aggConfigParams property
+
+<b>Signature:</b>
+
+```typescript
+aggConfigParams?: Record<string, any>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.indexpatternid.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.indexpatternid.md
new file mode 100644
index 0000000000000..2287c28398f7f
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.indexpatternid.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [KibanaDatatableColumnMeta](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.md) &gt; [indexPatternId](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.indexpatternid.md)
+
+## KibanaDatatableColumnMeta.indexPatternId property
+
+<b>Signature:</b>
+
+```typescript
+indexPatternId?: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.md
new file mode 100644
index 0000000000000..b2f8c9d06a727
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [KibanaDatatableColumnMeta](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.md)
+
+## KibanaDatatableColumnMeta interface
+
+<b>Signature:</b>
+
+```typescript
+export interface KibanaDatatableColumnMeta 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [aggConfigParams](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.aggconfigparams.md) | <code>Record&lt;string, any&gt;</code> |  |
+|  [indexPatternId](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.indexpatternid.md) | <code>string</code> |  |
+|  [type](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.type.md) | <code>string</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.type.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.type.md
new file mode 100644
index 0000000000000..98d4a0c2d43c3
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.type.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [KibanaDatatableColumnMeta](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.md) &gt; [type](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.type.md)
+
+## KibanaDatatableColumnMeta.type property
+
+<b>Signature:</b>
+
+```typescript
+type: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablerow.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablerow.md
new file mode 100644
index 0000000000000..cb5f1ad70f628
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.kibanadatatablerow.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [KibanaDatatableRow](./kibana-plugin-plugins-expressions-public.kibanadatatablerow.md)
+
+## KibanaDatatableRow interface
+
+<b>Signature:</b>
+
+```typescript
+export interface KibanaDatatableRow 
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.knowntypetostring.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.knowntypetostring.md
new file mode 100644
index 0000000000000..39c24760ca6ca
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.knowntypetostring.md
@@ -0,0 +1,17 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [KnownTypeToString](./kibana-plugin-plugins-expressions-public.knowntypetostring.md)
+
+## KnownTypeToString type
+
+Map the type of the generic to a string-based representation of the type.
+
+If the provided generic is its own type interface, we use the value of the `type` key as a string literal type for it.
+
+<b>Signature:</b>
+
+```typescript
+export declare type KnownTypeToString<T> = T extends string ? 'string' : T extends boolean ? 'boolean' : T extends number ? 'number' : T extends null ? 'null' : T extends {
+    type: string;
+} ? T['type'] : never;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.md
new file mode 100644
index 0000000000000..ead6f14e0d1d7
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.md
@@ -0,0 +1,134 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md)
+
+## kibana-plugin-plugins-expressions-public package
+
+## Classes
+
+|  Class | Description |
+|  --- | --- |
+|  [Execution](./kibana-plugin-plugins-expressions-public.execution.md) |  |
+|  [ExecutionContract](./kibana-plugin-plugins-expressions-public.executioncontract.md) | <code>ExecutionContract</code> is a wrapper around <code>Execution</code> class. It provides the same functionality but does not expose Expressions plugin internals. |
+|  [Executor](./kibana-plugin-plugins-expressions-public.executor.md) |  |
+|  [ExpressionFunction](./kibana-plugin-plugins-expressions-public.expressionfunction.md) |  |
+|  [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-public.expressionfunctionparameter.md) |  |
+|  [ExpressionRenderer](./kibana-plugin-plugins-expressions-public.expressionrenderer.md) |  |
+|  [ExpressionRendererRegistry](./kibana-plugin-plugins-expressions-public.expressionrendererregistry.md) |  |
+|  [ExpressionRenderHandler](./kibana-plugin-plugins-expressions-public.expressionrenderhandler.md) |  |
+|  [ExpressionsPublicPlugin](./kibana-plugin-plugins-expressions-public.expressionspublicplugin.md) |  |
+|  [ExpressionsService](./kibana-plugin-plugins-expressions-public.expressionsservice.md) | <code>ExpressionsService</code> class is used for multiple purposes:<!-- -->1. It implements the same Expressions service that can be used on both: (1) server-side and (2) browser-side. 2. It implements the same Expressions service that users can fork/clone, thus have their own instance of the Expressions plugin. 3. <code>ExpressionsService</code> defines the public contracts of \*setup\* and \*start\* Kibana Platform life-cycles for ease-of-use on server-side and browser-side. 4. <code>ExpressionsService</code> creates a bound version of all exported contract functions. 5. Functions are bound the way there are:<!-- -->\`\`\`<!-- -->ts registerFunction = (...args: Parameters<!-- -->&lt;<!-- -->Executor\['registerFunction'\]<!-- -->&gt; ): ReturnType<!-- -->&lt;<!-- -->Executor\['registerFunction'\]<!-- -->&gt; =<!-- -->&gt; this.executor.registerFunction(...args); \`\`\`<!-- -->so that JSDoc appears in developers IDE when they use those <code>plugins.expressions.registerFunction(</code>. |
+|  [ExpressionType](./kibana-plugin-plugins-expressions-public.expressiontype.md) |  |
+|  [FunctionsRegistry](./kibana-plugin-plugins-expressions-public.functionsregistry.md) |  |
+|  [TypesRegistry](./kibana-plugin-plugins-expressions-public.typesregistry.md) |  |
+
+## Enumerations
+
+|  Enumeration | Description |
+|  --- | --- |
+|  [FontStyle](./kibana-plugin-plugins-expressions-public.fontstyle.md) | Enum of supported CSS <code>font-style</code> properties. |
+|  [FontWeight](./kibana-plugin-plugins-expressions-public.fontweight.md) | Enum of supported CSS <code>font-weight</code> properties. |
+|  [Overflow](./kibana-plugin-plugins-expressions-public.overflow.md) | Enum of supported CSS <code>overflow</code> properties. |
+|  [TextAlignment](./kibana-plugin-plugins-expressions-public.textalignment.md) | Enum of supported CSS <code>text-align</code> properties. |
+|  [TextDecoration](./kibana-plugin-plugins-expressions-public.textdecoration.md) | Enum of supported CSS <code>text-decoration</code> properties. |
+
+## Functions
+
+|  Function | Description |
+|  --- | --- |
+|  [buildExpression(initialState)](./kibana-plugin-plugins-expressions-public.buildexpression.md) | Makes it easy to progressively build, update, and traverse an expression AST. You can either start with an empty AST, or provide an expression string, AST, or array of expression function builders to use as initial state. |
+|  [buildExpressionFunction(fnName, initialArgs)](./kibana-plugin-plugins-expressions-public.buildexpressionfunction.md) | Manages an AST for a single expression function. The return value can be provided to <code>buildExpression</code> to add this function to an expression.<!-- -->Note that to preserve type safety and ensure no args are missing, all required arguments for the specified function must be provided up front. If desired, they can be changed or removed later. |
+|  [format(ast, type)](./kibana-plugin-plugins-expressions-public.format.md) |  |
+|  [formatExpression(ast)](./kibana-plugin-plugins-expressions-public.formatexpression.md) | Given expression pipeline AST, returns formatted string. |
+|  [isExpressionAstBuilder(val)](./kibana-plugin-plugins-expressions-public.isexpressionastbuilder.md) | Type guard that checks whether a given value is an <code>ExpressionAstExpressionBuilder</code>. This is useful when working with subexpressions, where you might be retrieving a function argument, and need to know whether it is an expression builder instance which you can perform operations on. |
+|  [parse(expression, startRule)](./kibana-plugin-plugins-expressions-public.parse.md) |  |
+|  [parseExpression(expression)](./kibana-plugin-plugins-expressions-public.parseexpression.md) | Given expression pipeline string, returns parsed AST. |
+|  [plugin(initializerContext)](./kibana-plugin-plugins-expressions-public.plugin.md) |  |
+
+## Interfaces
+
+|  Interface | Description |
+|  --- | --- |
+|  [Datatable](./kibana-plugin-plugins-expressions-public.datatable.md) | A <code>Datatable</code> in Canvas is a unique structure that represents tabulated data. |
+|  [DatatableColumn](./kibana-plugin-plugins-expressions-public.datatablecolumn.md) | This type represents the shape of a column in a <code>Datatable</code>. |
+|  [ExecutionContext](./kibana-plugin-plugins-expressions-public.executioncontext.md) | <code>ExecutionContext</code> is an object available to all functions during a single execution; it provides various methods to perform side-effects. |
+|  [ExecutionParams](./kibana-plugin-plugins-expressions-public.executionparams.md) |  |
+|  [ExecutionState](./kibana-plugin-plugins-expressions-public.executionstate.md) |  |
+|  [ExecutorState](./kibana-plugin-plugins-expressions-public.executorstate.md) |  |
+|  [ExpressionAstExpression](./kibana-plugin-plugins-expressions-public.expressionastexpression.md) |  |
+|  [ExpressionAstExpressionBuilder](./kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.md) |  |
+|  [ExpressionAstFunction](./kibana-plugin-plugins-expressions-public.expressionastfunction.md) |  |
+|  [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-public.expressionastfunctionbuilder.md) |  |
+|  [ExpressionExecutor](./kibana-plugin-plugins-expressions-public.expressionexecutor.md) |  |
+|  [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.md) | <code>ExpressionFunctionDefinition</code> is the interface plugins have to implement to register a function in <code>expressions</code> plugin. |
+|  [ExpressionFunctionDefinitions](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.md) | A mapping of <code>ExpressionFunctionDefinition</code>s for functions which the Expressions services provides out-of-the-box. Any new functions registered by the Expressions plugin should have their types added here. |
+|  [ExpressionImage](./kibana-plugin-plugins-expressions-public.expressionimage.md) |  |
+|  [ExpressionRenderDefinition](./kibana-plugin-plugins-expressions-public.expressionrenderdefinition.md) |  |
+|  [ExpressionRendererEvent](./kibana-plugin-plugins-expressions-public.expressionrendererevent.md) |  |
+|  [ExpressionRenderError](./kibana-plugin-plugins-expressions-public.expressionrendererror.md) |  |
+|  [ExpressionsServiceStart](./kibana-plugin-plugins-expressions-public.expressionsservicestart.md) | The public contract that <code>ExpressionsService</code> provides to other plugins in Kibana Platform in \*start\* life-cycle. |
+|  [ExpressionsStart](./kibana-plugin-plugins-expressions-public.expressionsstart.md) | Expressions public start contrect, extends  |
+|  [ExpressionTypeDefinition](./kibana-plugin-plugins-expressions-public.expressiontypedefinition.md) | A generic type which represents a custom Expression Type Definition that's registered to the Interpreter. |
+|  [ExpressionTypeStyle](./kibana-plugin-plugins-expressions-public.expressiontypestyle.md) | An object that represents style information, typically CSS. |
+|  [Font](./kibana-plugin-plugins-expressions-public.font.md) | An interface representing a font in Canvas, with a textual label and the CSS <code>font-value</code>. |
+|  [IExpressionLoaderParams](./kibana-plugin-plugins-expressions-public.iexpressionloaderparams.md) |  |
+|  [IInterpreterRenderHandlers](./kibana-plugin-plugins-expressions-public.iinterpreterrenderhandlers.md) |  |
+|  [IRegistry](./kibana-plugin-plugins-expressions-public.iregistry.md) |  |
+|  [KibanaDatatable](./kibana-plugin-plugins-expressions-public.kibanadatatable.md) |  |
+|  [KibanaDatatableColumn](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumn.md) |  |
+|  [KibanaDatatableColumnMeta](./kibana-plugin-plugins-expressions-public.kibanadatatablecolumnmeta.md) |  |
+|  [KibanaDatatableRow](./kibana-plugin-plugins-expressions-public.kibanadatatablerow.md) |  |
+|  [PointSeriesColumn](./kibana-plugin-plugins-expressions-public.pointseriescolumn.md) | Column in a PointSeries |
+|  [Range](./kibana-plugin-plugins-expressions-public.range.md) |  |
+|  [ReactExpressionRendererProps](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.md) |  |
+|  [SerializedDatatable](./kibana-plugin-plugins-expressions-public.serializeddatatable.md) |  |
+|  [SerializedFieldFormat](./kibana-plugin-plugins-expressions-public.serializedfieldformat.md) | JSON representation of a field formatter configuration. Is used to carry information about how to format data in a data table as part of the column definition. |
+
+## Variables
+
+|  Variable | Description |
+|  --- | --- |
+|  [ReactExpressionRenderer](./kibana-plugin-plugins-expressions-public.reactexpressionrenderer.md) |  |
+
+## Type Aliases
+
+|  Type Alias | Description |
+|  --- | --- |
+|  [AnyExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-public.anyexpressionfunctiondefinition.md) | Type to capture every possible expression function definition. |
+|  [AnyExpressionTypeDefinition](./kibana-plugin-plugins-expressions-public.anyexpressiontypedefinition.md) |  |
+|  [ArgumentType](./kibana-plugin-plugins-expressions-public.argumenttype.md) | This type represents all of the possible combinations of properties of an Argument in an Expression Function. The presence or absence of certain fields influence the shape and presence of others within each <code>arg</code> in the specification. |
+|  [DatatableColumnType](./kibana-plugin-plugins-expressions-public.datatablecolumntype.md) | This type represents the <code>type</code> of any <code>DatatableColumn</code> in a <code>Datatable</code>. |
+|  [DatatableRow](./kibana-plugin-plugins-expressions-public.datatablerow.md) | This type represents a row in a <code>Datatable</code>. |
+|  [ExecutionContainer](./kibana-plugin-plugins-expressions-public.executioncontainer.md) |  |
+|  [ExecutorContainer](./kibana-plugin-plugins-expressions-public.executorcontainer.md) |  |
+|  [ExpressionAstArgument](./kibana-plugin-plugins-expressions-public.expressionastargument.md) |  |
+|  [ExpressionAstNode](./kibana-plugin-plugins-expressions-public.expressionastnode.md) |  |
+|  [ExpressionFunctionKibana](./kibana-plugin-plugins-expressions-public.expressionfunctionkibana.md) |  |
+|  [ExpressionRendererComponent](./kibana-plugin-plugins-expressions-public.expressionrenderercomponent.md) |  |
+|  [ExpressionsServiceSetup](./kibana-plugin-plugins-expressions-public.expressionsservicesetup.md) | The public contract that <code>ExpressionsService</code> provides to other plugins in Kibana Platform in \*setup\* life-cycle. |
+|  [ExpressionsSetup](./kibana-plugin-plugins-expressions-public.expressionssetup.md) | Expressions public setup contract, extends [ExpressionsServiceSetup](./kibana-plugin-plugins-expressions-public.expressionsservicesetup.md) |
+|  [ExpressionValue](./kibana-plugin-plugins-expressions-public.expressionvalue.md) |  |
+|  [ExpressionValueBoxed](./kibana-plugin-plugins-expressions-public.expressionvalueboxed.md) |  |
+|  [ExpressionValueConverter](./kibana-plugin-plugins-expressions-public.expressionvalueconverter.md) |  |
+|  [ExpressionValueError](./kibana-plugin-plugins-expressions-public.expressionvalueerror.md) |  |
+|  [ExpressionValueFilter](./kibana-plugin-plugins-expressions-public.expressionvaluefilter.md) | Represents an object that is a Filter. |
+|  [ExpressionValueNum](./kibana-plugin-plugins-expressions-public.expressionvaluenum.md) |  |
+|  [ExpressionValueRender](./kibana-plugin-plugins-expressions-public.expressionvaluerender.md) | Represents an object that is intended to be rendered. |
+|  [ExpressionValueSearchContext](./kibana-plugin-plugins-expressions-public.expressionvaluesearchcontext.md) |  |
+|  [ExpressionValueUnboxed](./kibana-plugin-plugins-expressions-public.expressionvalueunboxed.md) |  |
+|  [FontLabel](./kibana-plugin-plugins-expressions-public.fontlabel.md) | This type contains a unions of all supported font labels, or the the name of the font the user would see in a UI. |
+|  [FontValue](./kibana-plugin-plugins-expressions-public.fontvalue.md) | This type contains a union of all supported font values, equivalent to the CSS <code>font-value</code> property. |
+|  [InterpreterErrorType](./kibana-plugin-plugins-expressions-public.interpretererrortype.md) |  |
+|  [KIBANA\_CONTEXT\_NAME](./kibana-plugin-plugins-expressions-public.kibana_context_name.md) |  |
+|  [KibanaContext](./kibana-plugin-plugins-expressions-public.kibanacontext.md) |  |
+|  [KnownTypeToString](./kibana-plugin-plugins-expressions-public.knowntypetostring.md) | Map the type of the generic to a string-based representation of the type.<!-- -->If the provided generic is its own type interface, we use the value of the <code>type</code> key as a string literal type for it. |
+|  [PointSeries](./kibana-plugin-plugins-expressions-public.pointseries.md) | A <code>PointSeries</code> is a unique structure that represents dots on a chart. |
+|  [PointSeriesColumnName](./kibana-plugin-plugins-expressions-public.pointseriescolumnname.md) | Allowed column names in a PointSeries |
+|  [PointSeriesColumns](./kibana-plugin-plugins-expressions-public.pointseriescolumns.md) | Represents a collection of valid Columns in a PointSeries |
+|  [PointSeriesRow](./kibana-plugin-plugins-expressions-public.pointseriesrow.md) |  |
+|  [ReactExpressionRendererType](./kibana-plugin-plugins-expressions-public.reactexpressionrenderertype.md) |  |
+|  [Style](./kibana-plugin-plugins-expressions-public.style.md) |  |
+|  [TypeString](./kibana-plugin-plugins-expressions-public.typestring.md) | If the type extends a Promise, we still need to return the string representation:<code>someArgument: Promise&lt;boolean &#124; string&gt;</code> results in <code>types: ['boolean', 'string']</code> |
+|  [TypeToString](./kibana-plugin-plugins-expressions-public.typetostring.md) | This can convert a type into a known Expression string representation of that type. For example, <code>TypeToString&lt;Datatable&gt;</code> will resolve to <code>'datatable'</code>. This allows Expression Functions to continue to specify their type in a simple string format. |
+|  [UnmappedTypeStrings](./kibana-plugin-plugins-expressions-public.unmappedtypestrings.md) | Types used in Expressions that don't map to a primitive cleanly:<code>date</code> is typed as a number or string, and represents a date |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.overflow.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.overflow.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.overflow.md
@@ -0,0 +1,23 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Overflow](./kibana-plugin-plugins-expressions-public.overflow.md)
+
+## Overflow enum
+
+Enum of supported CSS `overflow` properties.
+
+<b>Signature:</b>
+
+```typescript
+export declare enum Overflow 
+```
+
+## Enumeration Members
+
+|  Member | Value | Description |
+|  --- | --- | --- |
+|  AUTO | <code>&quot;auto&quot;</code> |  |
+|  HIDDEN | <code>&quot;hidden&quot;</code> |  |
+|  SCROLL | <code>&quot;scroll&quot;</code> |  |
+|  VISIBLE | <code>&quot;visible&quot;</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.parse.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.parse.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.parse.md
@@ -0,0 +1,23 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [parse](./kibana-plugin-plugins-expressions-public.parse.md)
+
+## parse() function
+
+<b>Signature:</b>
+
+```typescript
+export declare function parse<E extends string, S extends 'expression' | 'argument'>(expression: E, startRule: S): S extends 'expression' ? ExpressionAstExpression : ExpressionAstArgument;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  expression | <code>E</code> |  |
+|  startRule | <code>S</code> |  |
+
+<b>Returns:</b>
+
+`S extends 'expression' ? ExpressionAstExpression : ExpressionAstArgument`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.parseexpression.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.parseexpression.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.parseexpression.md
@@ -0,0 +1,24 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [parseExpression](./kibana-plugin-plugins-expressions-public.parseexpression.md)
+
+## parseExpression() function
+
+Given expression pipeline string, returns parsed AST.
+
+<b>Signature:</b>
+
+```typescript
+export declare function parseExpression(expression: string): ExpressionAstExpression;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  expression | <code>string</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionAstExpression`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.plugin.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.plugin.md
new file mode 100644
index 0000000000000..ef707992a0a54
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.plugin.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [plugin](./kibana-plugin-plugins-expressions-public.plugin.md)
+
+## plugin() function
+
+<b>Signature:</b>
+
+```typescript
+export declare function plugin(initializerContext: PluginInitializerContext): ExpressionsPublicPlugin;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  initializerContext | <code>PluginInitializerContext</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionsPublicPlugin`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseries.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseries.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseries.md
@@ -0,0 +1,16 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [PointSeries](./kibana-plugin-plugins-expressions-public.pointseries.md)
+
+## PointSeries type
+
+A `PointSeries` is a unique structure that represents dots on a chart.
+
+<b>Signature:</b>
+
+```typescript
+export declare type PointSeries = ExpressionValueBoxed<'pointseries', {
+    columns: PointSeriesColumns;
+    rows: PointSeriesRow[];
+}>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriescolumn.expression.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriescolumn.expression.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriescolumn.expression.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [PointSeriesColumn](./kibana-plugin-plugins-expressions-public.pointseriescolumn.md) &gt; [expression](./kibana-plugin-plugins-expressions-public.pointseriescolumn.expression.md)
+
+## PointSeriesColumn.expression property
+
+<b>Signature:</b>
+
+```typescript
+expression: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriescolumn.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriescolumn.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriescolumn.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [PointSeriesColumn](./kibana-plugin-plugins-expressions-public.pointseriescolumn.md)
+
+## PointSeriesColumn interface
+
+Column in a PointSeries
+
+<b>Signature:</b>
+
+```typescript
+export interface PointSeriesColumn 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [expression](./kibana-plugin-plugins-expressions-public.pointseriescolumn.expression.md) | <code>string</code> |  |
+|  [role](./kibana-plugin-plugins-expressions-public.pointseriescolumn.role.md) | <code>'measure' &#124; 'dimension'</code> |  |
+|  [type](./kibana-plugin-plugins-expressions-public.pointseriescolumn.type.md) | <code>'number' &#124; 'string'</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriescolumn.role.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriescolumn.role.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriescolumn.role.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [PointSeriesColumn](./kibana-plugin-plugins-expressions-public.pointseriescolumn.md) &gt; [role](./kibana-plugin-plugins-expressions-public.pointseriescolumn.role.md)
+
+## PointSeriesColumn.role property
+
+<b>Signature:</b>
+
+```typescript
+role: 'measure' | 'dimension';
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriescolumn.type.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriescolumn.type.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriescolumn.type.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [PointSeriesColumn](./kibana-plugin-plugins-expressions-public.pointseriescolumn.md) &gt; [type](./kibana-plugin-plugins-expressions-public.pointseriescolumn.type.md)
+
+## PointSeriesColumn.type property
+
+<b>Signature:</b>
+
+```typescript
+type: 'number' | 'string';
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriescolumnname.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriescolumnname.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriescolumnname.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [PointSeriesColumnName](./kibana-plugin-plugins-expressions-public.pointseriescolumnname.md)
+
+## PointSeriesColumnName type
+
+Allowed column names in a PointSeries
+
+<b>Signature:</b>
+
+```typescript
+export declare type PointSeriesColumnName = 'x' | 'y' | 'color' | 'size' | 'text';
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriescolumns.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriescolumns.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriescolumns.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [PointSeriesColumns](./kibana-plugin-plugins-expressions-public.pointseriescolumns.md)
+
+## PointSeriesColumns type
+
+Represents a collection of valid Columns in a PointSeries
+
+<b>Signature:</b>
+
+```typescript
+export declare type PointSeriesColumns = Record<PointSeriesColumnName, PointSeriesColumn> | {};
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriesrow.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriesrow.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.pointseriesrow.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [PointSeriesRow](./kibana-plugin-plugins-expressions-public.pointseriesrow.md)
+
+## PointSeriesRow type
+
+<b>Signature:</b>
+
+```typescript
+export declare type PointSeriesRow = Record<string, any>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.range.from.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.range.from.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.range.from.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Range](./kibana-plugin-plugins-expressions-public.range.md) &gt; [from](./kibana-plugin-plugins-expressions-public.range.from.md)
+
+## Range.from property
+
+<b>Signature:</b>
+
+```typescript
+from: number;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.range.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.range.md
new file mode 100644
index 0000000000000..cf0cf4cb50b71
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.range.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Range](./kibana-plugin-plugins-expressions-public.range.md)
+
+## Range interface
+
+<b>Signature:</b>
+
+```typescript
+export interface Range 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [from](./kibana-plugin-plugins-expressions-public.range.from.md) | <code>number</code> |  |
+|  [to](./kibana-plugin-plugins-expressions-public.range.to.md) | <code>number</code> |  |
+|  [type](./kibana-plugin-plugins-expressions-public.range.type.md) | <code>typeof name</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.range.to.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.range.to.md
new file mode 100644
index 0000000000000..bd79997e65fc7
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.range.to.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Range](./kibana-plugin-plugins-expressions-public.range.md) &gt; [to](./kibana-plugin-plugins-expressions-public.range.to.md)
+
+## Range.to property
+
+<b>Signature:</b>
+
+```typescript
+to: number;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.range.type.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.range.type.md
new file mode 100644
index 0000000000000..4d5476516655d
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.range.type.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Range](./kibana-plugin-plugins-expressions-public.range.md) &gt; [type](./kibana-plugin-plugins-expressions-public.range.type.md)
+
+## Range.type property
+
+<b>Signature:</b>
+
+```typescript
+type: typeof name;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrenderer.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrenderer.md
new file mode 100644
index 0000000000000..66c2e1e3c0c8d
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrenderer.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ReactExpressionRenderer](./kibana-plugin-plugins-expressions-public.reactexpressionrenderer.md)
+
+## ReactExpressionRenderer variable
+
+<b>Signature:</b>
+
+```typescript
+ReactExpressionRenderer: ({ className, dataAttrs, padding, renderError, expression, onEvent, reload$, ...expressionLoaderOptions }: ReactExpressionRendererProps) => JSX.Element
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.classname.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.classname.md
new file mode 100644
index 0000000000000..b5b1391ae72fd
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.classname.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ReactExpressionRendererProps](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.md) &gt; [className](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.classname.md)
+
+## ReactExpressionRendererProps.className property
+
+<b>Signature:</b>
+
+```typescript
+className?: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.dataattrs.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.dataattrs.md
new file mode 100644
index 0000000000000..a0914ce37299f
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.dataattrs.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ReactExpressionRendererProps](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.md) &gt; [dataAttrs](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.dataattrs.md)
+
+## ReactExpressionRendererProps.dataAttrs property
+
+<b>Signature:</b>
+
+```typescript
+dataAttrs?: string[];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.expression.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.expression.md
new file mode 100644
index 0000000000000..21f4294db5aeb
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.expression.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ReactExpressionRendererProps](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.md) &gt; [expression](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.expression.md)
+
+## ReactExpressionRendererProps.expression property
+
+<b>Signature:</b>
+
+```typescript
+expression: string | ExpressionAstExpression;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.md
new file mode 100644
index 0000000000000..bd6c8cba5f784
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.md
@@ -0,0 +1,24 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ReactExpressionRendererProps](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.md)
+
+## ReactExpressionRendererProps interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ReactExpressionRendererProps extends IExpressionLoaderParams 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [className](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.classname.md) | <code>string</code> |  |
+|  [dataAttrs](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.dataattrs.md) | <code>string[]</code> |  |
+|  [expression](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.expression.md) | <code>string &#124; ExpressionAstExpression</code> |  |
+|  [onEvent](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.onevent.md) | <code>(event: ExpressionRendererEvent) =&gt; void</code> |  |
+|  [padding](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.padding.md) | <code>'xs' &#124; 's' &#124; 'm' &#124; 'l' &#124; 'xl'</code> |  |
+|  [reload$](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.reload_.md) | <code>Observable&lt;unknown&gt;</code> | An observable which can be used to re-run the expression without destroying the component |
+|  [renderError](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.rendererror.md) | <code>(error?: string &#124; null) =&gt; React.ReactElement &#124; React.ReactElement[]</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.onevent.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.onevent.md
new file mode 100644
index 0000000000000..4fe1e158df1b8
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.onevent.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ReactExpressionRendererProps](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.md) &gt; [onEvent](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.onevent.md)
+
+## ReactExpressionRendererProps.onEvent property
+
+<b>Signature:</b>
+
+```typescript
+onEvent?: (event: ExpressionRendererEvent) => void;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.padding.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.padding.md
new file mode 100644
index 0000000000000..47a23f5c1088b
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.padding.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ReactExpressionRendererProps](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.md) &gt; [padding](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.padding.md)
+
+## ReactExpressionRendererProps.padding property
+
+<b>Signature:</b>
+
+```typescript
+padding?: 'xs' | 's' | 'm' | 'l' | 'xl';
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.reload_.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.reload_.md
new file mode 100644
index 0000000000000..a7991d559377d
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.reload_.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ReactExpressionRendererProps](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.md) &gt; [reload$](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.reload_.md)
+
+## ReactExpressionRendererProps.reload$ property
+
+An observable which can be used to re-run the expression without destroying the component
+
+<b>Signature:</b>
+
+```typescript
+reload$?: Observable<unknown>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.rendererror.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.rendererror.md
new file mode 100644
index 0000000000000..48bfe1ee5c7c7
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.rendererror.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ReactExpressionRendererProps](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.md) &gt; [renderError](./kibana-plugin-plugins-expressions-public.reactexpressionrendererprops.rendererror.md)
+
+## ReactExpressionRendererProps.renderError property
+
+<b>Signature:</b>
+
+```typescript
+renderError?: (error?: string | null) => React.ReactElement | React.ReactElement[];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrenderertype.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrenderertype.md
new file mode 100644
index 0000000000000..4ca56d534b84a
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.reactexpressionrenderertype.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ReactExpressionRendererType](./kibana-plugin-plugins-expressions-public.reactexpressionrenderertype.md)
+
+## ReactExpressionRendererType type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ReactExpressionRendererType = React.ComponentType<ReactExpressionRendererProps>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.serializeddatatable.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.serializeddatatable.md
new file mode 100644
index 0000000000000..632cd1de2a0c2
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.serializeddatatable.md
@@ -0,0 +1,18 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [SerializedDatatable](./kibana-plugin-plugins-expressions-public.serializeddatatable.md)
+
+## SerializedDatatable interface
+
+<b>Signature:</b>
+
+```typescript
+export interface SerializedDatatable extends Datatable 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [rows](./kibana-plugin-plugins-expressions-public.serializeddatatable.rows.md) | <code>string[][]</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.serializeddatatable.rows.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.serializeddatatable.rows.md
new file mode 100644
index 0000000000000..00d4323ae7025
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.serializeddatatable.rows.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [SerializedDatatable](./kibana-plugin-plugins-expressions-public.serializeddatatable.md) &gt; [rows](./kibana-plugin-plugins-expressions-public.serializeddatatable.rows.md)
+
+## SerializedDatatable.rows property
+
+<b>Signature:</b>
+
+```typescript
+rows: string[][];
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.serializedfieldformat.id.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.serializedfieldformat.id.md
new file mode 100644
index 0000000000000..40a45d50e9b19
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.serializedfieldformat.id.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [SerializedFieldFormat](./kibana-plugin-plugins-expressions-public.serializedfieldformat.md) &gt; [id](./kibana-plugin-plugins-expressions-public.serializedfieldformat.id.md)
+
+## SerializedFieldFormat.id property
+
+<b>Signature:</b>
+
+```typescript
+id?: string;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.serializedfieldformat.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.serializedfieldformat.md
new file mode 100644
index 0000000000000..74fa132ec1189
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.serializedfieldformat.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [SerializedFieldFormat](./kibana-plugin-plugins-expressions-public.serializedfieldformat.md)
+
+## SerializedFieldFormat interface
+
+JSON representation of a field formatter configuration. Is used to carry information about how to format data in a data table as part of the column definition.
+
+<b>Signature:</b>
+
+```typescript
+export interface SerializedFieldFormat<TParams = Record<string, any>> 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [id](./kibana-plugin-plugins-expressions-public.serializedfieldformat.id.md) | <code>string</code> |  |
+|  [params](./kibana-plugin-plugins-expressions-public.serializedfieldformat.params.md) | <code>TParams</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.serializedfieldformat.params.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.serializedfieldformat.params.md
new file mode 100644
index 0000000000000..32d7e54cbc884
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.serializedfieldformat.params.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [SerializedFieldFormat](./kibana-plugin-plugins-expressions-public.serializedfieldformat.md) &gt; [params](./kibana-plugin-plugins-expressions-public.serializedfieldformat.params.md)
+
+## SerializedFieldFormat.params property
+
+<b>Signature:</b>
+
+```typescript
+params?: TParams;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.style.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.style.md
new file mode 100644
index 0000000000000..f42df4b8b314e
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.style.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [Style](./kibana-plugin-plugins-expressions-public.style.md)
+
+## Style type
+
+<b>Signature:</b>
+
+```typescript
+export declare type Style = ExpressionTypeStyle;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.textalignment.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.textalignment.md
new file mode 100644
index 0000000000000..351a7ba6e1f27
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.textalignment.md
@@ -0,0 +1,23 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [TextAlignment](./kibana-plugin-plugins-expressions-public.textalignment.md)
+
+## TextAlignment enum
+
+Enum of supported CSS `text-align` properties.
+
+<b>Signature:</b>
+
+```typescript
+export declare enum TextAlignment 
+```
+
+## Enumeration Members
+
+|  Member | Value | Description |
+|  --- | --- | --- |
+|  CENTER | <code>&quot;center&quot;</code> |  |
+|  JUSTIFY | <code>&quot;justify&quot;</code> |  |
+|  LEFT | <code>&quot;left&quot;</code> |  |
+|  RIGHT | <code>&quot;right&quot;</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.textdecoration.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.textdecoration.md
new file mode 100644
index 0000000000000..3cd8e89f4cd8c
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.textdecoration.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [TextDecoration](./kibana-plugin-plugins-expressions-public.textdecoration.md)
+
+## TextDecoration enum
+
+Enum of supported CSS `text-decoration` properties.
+
+<b>Signature:</b>
+
+```typescript
+export declare enum TextDecoration 
+```
+
+## Enumeration Members
+
+|  Member | Value | Description |
+|  --- | --- | --- |
+|  NONE | <code>&quot;none&quot;</code> |  |
+|  UNDERLINE | <code>&quot;underline&quot;</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typesregistry._constructor_.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typesregistry._constructor_.md
new file mode 100644
index 0000000000000..856bf2bf05ad1
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typesregistry._constructor_.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [TypesRegistry](./kibana-plugin-plugins-expressions-public.typesregistry.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-public.typesregistry._constructor_.md)
+
+## TypesRegistry.(constructor)
+
+Constructs a new instance of the `TypesRegistry` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(executor: Executor<any>);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  executor | <code>Executor&lt;any&gt;</code> |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typesregistry.get.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typesregistry.get.md
new file mode 100644
index 0000000000000..f83e7435485c5
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typesregistry.get.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [TypesRegistry](./kibana-plugin-plugins-expressions-public.typesregistry.md) &gt; [get](./kibana-plugin-plugins-expressions-public.typesregistry.get.md)
+
+## TypesRegistry.get() method
+
+<b>Signature:</b>
+
+```typescript
+get(id: string): ExpressionType | null;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  id | <code>string</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionType | null`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typesregistry.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typesregistry.md
new file mode 100644
index 0000000000000..f1f386ec4210f
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typesregistry.md
@@ -0,0 +1,27 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [TypesRegistry](./kibana-plugin-plugins-expressions-public.typesregistry.md)
+
+## TypesRegistry class
+
+<b>Signature:</b>
+
+```typescript
+export declare class TypesRegistry implements IRegistry<ExpressionType> 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(executor)](./kibana-plugin-plugins-expressions-public.typesregistry._constructor_.md) |  | Constructs a new instance of the <code>TypesRegistry</code> class |
+
+## Methods
+
+|  Method | Modifiers | Description |
+|  --- | --- | --- |
+|  [get(id)](./kibana-plugin-plugins-expressions-public.typesregistry.get.md) |  |  |
+|  [register(typeDefinition)](./kibana-plugin-plugins-expressions-public.typesregistry.register.md) |  |  |
+|  [toArray()](./kibana-plugin-plugins-expressions-public.typesregistry.toarray.md) |  |  |
+|  [toJS()](./kibana-plugin-plugins-expressions-public.typesregistry.tojs.md) |  |  |
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typesregistry.register.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typesregistry.register.md
new file mode 100644
index 0000000000000..b328f26aa50e2
--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typesregistry.register.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [TypesRegistry](./kibana-plugin-plugins-expressions-public.typesregistry.md) &gt; [register](./kibana-plugin-plugins-expressions-public.typesregistry.register.md)
+
+## TypesRegistry.register() method
+
+<b>Signature:</b>
+
+```typescript
+register(typeDefinition: AnyExpressionTypeDefinition | (() => AnyExpressionTypeDefinition)): void;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  typeDefinition | <code>AnyExpressionTypeDefinition &#124; (() =&gt; AnyExpressionTypeDefinition)</code> |  |
+
+<b>Returns:</b>
+
+`void`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typesregistry.toarray.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typesregistry.toarray.md
new file mode 100644
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@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [TypesRegistry](./kibana-plugin-plugins-expressions-public.typesregistry.md) &gt; [toArray](./kibana-plugin-plugins-expressions-public.typesregistry.toarray.md)
+
+## TypesRegistry.toArray() method
+
+<b>Signature:</b>
+
+```typescript
+toArray(): ExpressionType[];
+```
+<b>Returns:</b>
+
+`ExpressionType[]`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typesregistry.tojs.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typesregistry.tojs.md
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typesregistry.tojs.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [TypesRegistry](./kibana-plugin-plugins-expressions-public.typesregistry.md) &gt; [toJS](./kibana-plugin-plugins-expressions-public.typesregistry.tojs.md)
+
+## TypesRegistry.toJS() method
+
+<b>Signature:</b>
+
+```typescript
+toJS(): Record<string, ExpressionType>;
+```
+<b>Returns:</b>
+
+`Record<string, ExpressionType>`
+
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typestring.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typestring.md
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+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typestring.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [TypeString](./kibana-plugin-plugins-expressions-public.typestring.md)
+
+## TypeString type
+
+If the type extends a Promise, we still need to return the string representation:
+
+`someArgument: Promise<boolean | string>` results in `types: ['boolean', 'string']`
+
+<b>Signature:</b>
+
+```typescript
+export declare type TypeString<T> = KnownTypeToString<UnwrapPromiseOrReturn<T>>;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typetostring.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typetostring.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.typetostring.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [TypeToString](./kibana-plugin-plugins-expressions-public.typetostring.md)
+
+## TypeToString type
+
+This can convert a type into a known Expression string representation of that type. For example, `TypeToString<Datatable>` will resolve to `'datatable'`<!-- -->. This allows Expression Functions to continue to specify their type in a simple string format.
+
+<b>Signature:</b>
+
+```typescript
+export declare type TypeToString<T> = KnownTypeToString<T> | UnmappedTypeStrings;
+```
diff --git a/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.unmappedtypestrings.md b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.unmappedtypestrings.md
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--- /dev/null
+++ b/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.unmappedtypestrings.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [UnmappedTypeStrings](./kibana-plugin-plugins-expressions-public.unmappedtypestrings.md)
+
+## UnmappedTypeStrings type
+
+Types used in Expressions that don't map to a primitive cleanly:
+
+`date` is typed as a number or string, and represents a date
+
+<b>Signature:</b>
+
+```typescript
+export declare type UnmappedTypeStrings = 'date' | 'filter';
+```
diff --git a/docs/development/plugins/expressions/server/index.md b/docs/development/plugins/expressions/server/index.md
new file mode 100644
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+++ b/docs/development/plugins/expressions/server/index.md
@@ -0,0 +1,12 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md)
+
+## API Reference
+
+## Packages
+
+|  Package | Description |
+|  --- | --- |
+|  [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.anyexpressionfunctiondefinition.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.anyexpressionfunctiondefinition.md
new file mode 100644
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+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.anyexpressionfunctiondefinition.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [AnyExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-server.anyexpressionfunctiondefinition.md)
+
+## AnyExpressionFunctionDefinition type
+
+Type to capture every possible expression function definition.
+
+<b>Signature:</b>
+
+```typescript
+export declare type AnyExpressionFunctionDefinition = ExpressionFunctionDefinition<string, any, Record<string, any>, any>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.anyexpressiontypedefinition.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.anyexpressiontypedefinition.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.anyexpressiontypedefinition.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [AnyExpressionTypeDefinition](./kibana-plugin-plugins-expressions-server.anyexpressiontypedefinition.md)
+
+## AnyExpressionTypeDefinition type
+
+<b>Signature:</b>
+
+```typescript
+export declare type AnyExpressionTypeDefinition = ExpressionTypeDefinition<any, any, any>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.argumenttype.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.argumenttype.md
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+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.argumenttype.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ArgumentType](./kibana-plugin-plugins-expressions-server.argumenttype.md)
+
+## ArgumentType type
+
+This type represents all of the possible combinations of properties of an Argument in an Expression Function. The presence or absence of certain fields influence the shape and presence of others within each `arg` in the specification.
+
+<b>Signature:</b>
+
+```typescript
+export declare type ArgumentType<T> = SingleArgumentType<T> | MultipleArgumentType<T> | UnresolvedSingleArgumentType<T> | UnresolvedMultipleArgumentType<T>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.buildexpression.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.buildexpression.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.buildexpression.md
@@ -0,0 +1,24 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [buildExpression](./kibana-plugin-plugins-expressions-server.buildexpression.md)
+
+## buildExpression() function
+
+Makes it easy to progressively build, update, and traverse an expression AST. You can either start with an empty AST, or provide an expression string, AST, or array of expression function builders to use as initial state.
+
+<b>Signature:</b>
+
+```typescript
+export declare function buildExpression(initialState?: ExpressionAstFunctionBuilder[] | ExpressionAstExpression | string): ExpressionAstExpressionBuilder;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  initialState | <code>ExpressionAstFunctionBuilder[] &#124; ExpressionAstExpression &#124; string</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionAstExpressionBuilder`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.buildexpressionfunction.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.buildexpressionfunction.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.buildexpressionfunction.md
@@ -0,0 +1,30 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [buildExpressionFunction](./kibana-plugin-plugins-expressions-server.buildexpressionfunction.md)
+
+## buildExpressionFunction() function
+
+Manages an AST for a single expression function. The return value can be provided to `buildExpression` to add this function to an expression.
+
+Note that to preserve type safety and ensure no args are missing, all required arguments for the specified function must be provided up front. If desired, they can be changed or removed later.
+
+<b>Signature:</b>
+
+```typescript
+export declare function buildExpressionFunction<FnDef extends AnyExpressionFunctionDefinition = AnyExpressionFunctionDefinition>(fnName: InferFunctionDefinition<FnDef>['name'], 
+initialArgs: {
+    [K in keyof FunctionArgs<FnDef>]: FunctionArgs<FnDef>[K] | ExpressionAstExpressionBuilder | ExpressionAstExpressionBuilder[];
+}): ExpressionAstFunctionBuilder<FnDef>;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  fnName | <code>InferFunctionDefinition&lt;FnDef&gt;['name']</code> |  |
+|  initialArgs | <code>{</code><br/><code>    [K in keyof FunctionArgs&lt;FnDef&gt;]: FunctionArgs&lt;FnDef&gt;[K] &#124; ExpressionAstExpressionBuilder &#124; ExpressionAstExpressionBuilder[];</code><br/><code>}</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionAstFunctionBuilder<FnDef>`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatable.columns.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatable.columns.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatable.columns.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Datatable](./kibana-plugin-plugins-expressions-server.datatable.md) &gt; [columns](./kibana-plugin-plugins-expressions-server.datatable.columns.md)
+
+## Datatable.columns property
+
+<b>Signature:</b>
+
+```typescript
+columns: DatatableColumn[];
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatable.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatable.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatable.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Datatable](./kibana-plugin-plugins-expressions-server.datatable.md)
+
+## Datatable interface
+
+A `Datatable` in Canvas is a unique structure that represents tabulated data.
+
+<b>Signature:</b>
+
+```typescript
+export interface Datatable 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [columns](./kibana-plugin-plugins-expressions-server.datatable.columns.md) | <code>DatatableColumn[]</code> |  |
+|  [rows](./kibana-plugin-plugins-expressions-server.datatable.rows.md) | <code>DatatableRow[]</code> |  |
+|  [type](./kibana-plugin-plugins-expressions-server.datatable.type.md) | <code>typeof name</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatable.rows.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatable.rows.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatable.rows.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Datatable](./kibana-plugin-plugins-expressions-server.datatable.md) &gt; [rows](./kibana-plugin-plugins-expressions-server.datatable.rows.md)
+
+## Datatable.rows property
+
+<b>Signature:</b>
+
+```typescript
+rows: DatatableRow[];
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatable.type.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatable.type.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatable.type.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Datatable](./kibana-plugin-plugins-expressions-server.datatable.md) &gt; [type](./kibana-plugin-plugins-expressions-server.datatable.type.md)
+
+## Datatable.type property
+
+<b>Signature:</b>
+
+```typescript
+type: typeof name;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatablecolumn.id.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatablecolumn.id.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatablecolumn.id.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [DatatableColumn](./kibana-plugin-plugins-expressions-server.datatablecolumn.md) &gt; [id](./kibana-plugin-plugins-expressions-server.datatablecolumn.id.md)
+
+## DatatableColumn.id property
+
+<b>Signature:</b>
+
+```typescript
+id: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatablecolumn.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatablecolumn.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatablecolumn.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [DatatableColumn](./kibana-plugin-plugins-expressions-server.datatablecolumn.md)
+
+## DatatableColumn interface
+
+This type represents the shape of a column in a `Datatable`<!-- -->.
+
+<b>Signature:</b>
+
+```typescript
+export interface DatatableColumn 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [id](./kibana-plugin-plugins-expressions-server.datatablecolumn.id.md) | <code>string</code> |  |
+|  [meta](./kibana-plugin-plugins-expressions-server.datatablecolumn.meta.md) | <code>DatatableColumnMeta</code> |  |
+|  [name](./kibana-plugin-plugins-expressions-server.datatablecolumn.name.md) | <code>string</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatablecolumn.meta.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatablecolumn.meta.md
new file mode 100644
index 0000000000000..ef47c67a8d606
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatablecolumn.meta.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [DatatableColumn](./kibana-plugin-plugins-expressions-server.datatablecolumn.md) &gt; [meta](./kibana-plugin-plugins-expressions-server.datatablecolumn.meta.md)
+
+## DatatableColumn.meta property
+
+<b>Signature:</b>
+
+```typescript
+meta: DatatableColumnMeta;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatablecolumn.name.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatablecolumn.name.md
new file mode 100644
index 0000000000000..112b4ac3b9941
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatablecolumn.name.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [DatatableColumn](./kibana-plugin-plugins-expressions-server.datatablecolumn.md) &gt; [name](./kibana-plugin-plugins-expressions-server.datatablecolumn.name.md)
+
+## DatatableColumn.name property
+
+<b>Signature:</b>
+
+```typescript
+name: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatablecolumntype.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatablecolumntype.md
new file mode 100644
index 0000000000000..4afce913526de
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatablecolumntype.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [DatatableColumnType](./kibana-plugin-plugins-expressions-server.datatablecolumntype.md)
+
+## DatatableColumnType type
+
+This type represents the `type` of any `DatatableColumn` in a `Datatable`<!-- -->.
+
+<b>Signature:</b>
+
+```typescript
+export declare type DatatableColumnType = 'string' | 'number' | 'boolean' | 'date' | 'null';
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatablerow.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatablerow.md
new file mode 100644
index 0000000000000..56ef342b22a28
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.datatablerow.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [DatatableRow](./kibana-plugin-plugins-expressions-server.datatablerow.md)
+
+## DatatableRow type
+
+This type represents a row in a `Datatable`<!-- -->.
+
+<b>Signature:</b>
+
+```typescript
+export declare type DatatableRow = Record<string, any>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution._constructor_.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution._constructor_.md
new file mode 100644
index 0000000000000..75f4cc4c2a017
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution._constructor_.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Execution](./kibana-plugin-plugins-expressions-server.execution.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-server.execution._constructor_.md)
+
+## Execution.(constructor)
+
+Constructs a new instance of the `Execution` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(params: ExecutionParams<ExtraContext>);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  params | <code>ExecutionParams&lt;ExtraContext&gt;</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.cancel.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.cancel.md
new file mode 100644
index 0000000000000..2ee091da80504
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.cancel.md
@@ -0,0 +1,17 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Execution](./kibana-plugin-plugins-expressions-server.execution.md) &gt; [cancel](./kibana-plugin-plugins-expressions-server.execution.cancel.md)
+
+## Execution.cancel() method
+
+Stop execution of expression.
+
+<b>Signature:</b>
+
+```typescript
+cancel(): void;
+```
+<b>Returns:</b>
+
+`void`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.cast.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.cast.md
new file mode 100644
index 0000000000000..22b876332efb4
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.cast.md
@@ -0,0 +1,23 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Execution](./kibana-plugin-plugins-expressions-server.execution.md) &gt; [cast](./kibana-plugin-plugins-expressions-server.execution.cast.md)
+
+## Execution.cast() method
+
+<b>Signature:</b>
+
+```typescript
+cast(value: any, toTypeNames?: string[]): any;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  value | <code>any</code> |  |
+|  toTypeNames | <code>string[]</code> |  |
+
+<b>Returns:</b>
+
+`any`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.context.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.context.md
new file mode 100644
index 0000000000000..d1969fb0859b7
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.context.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Execution](./kibana-plugin-plugins-expressions-server.execution.md) &gt; [context](./kibana-plugin-plugins-expressions-server.execution.context.md)
+
+## Execution.context property
+
+Execution context - object that allows to do side-effects. Context is passed to every function.
+
+<b>Signature:</b>
+
+```typescript
+readonly context: ExecutionContext<Input, InspectorAdapters> & ExtraContext;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.contract.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.contract.md
new file mode 100644
index 0000000000000..149b5a7ced9cb
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.contract.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Execution](./kibana-plugin-plugins-expressions-server.execution.md) &gt; [contract](./kibana-plugin-plugins-expressions-server.execution.contract.md)
+
+## Execution.contract property
+
+Contract is a public representation of `Execution` instances. Contract we can return to other plugins for their consumption.
+
+<b>Signature:</b>
+
+```typescript
+readonly contract: ExecutionContract<ExtraContext, Input, Output, InspectorAdapters>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.expression.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.expression.md
new file mode 100644
index 0000000000000..0487378ce1bba
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.expression.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Execution](./kibana-plugin-plugins-expressions-server.execution.md) &gt; [expression](./kibana-plugin-plugins-expressions-server.execution.expression.md)
+
+## Execution.expression property
+
+<b>Signature:</b>
+
+```typescript
+readonly expression: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.input.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.input.md
new file mode 100644
index 0000000000000..ea411523a2b0b
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.input.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Execution](./kibana-plugin-plugins-expressions-server.execution.md) &gt; [input](./kibana-plugin-plugins-expressions-server.execution.input.md)
+
+## Execution.input property
+
+Initial input of the execution.
+
+N.B. It is initialized to `null` rather than `undefined` for legacy reasons, because in legacy interpreter it was set to `null` by default.
+
+<b>Signature:</b>
+
+```typescript
+input: Input;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.inspectoradapters.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.inspectoradapters.md
new file mode 100644
index 0000000000000..99bcca267f8ed
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.inspectoradapters.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Execution](./kibana-plugin-plugins-expressions-server.execution.md) &gt; [inspectorAdapters](./kibana-plugin-plugins-expressions-server.execution.inspectoradapters.md)
+
+## Execution.inspectorAdapters property
+
+<b>Signature:</b>
+
+```typescript
+get inspectorAdapters(): InspectorAdapters;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.interpret.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.interpret.md
new file mode 100644
index 0000000000000..cf59e796e6120
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.interpret.md
@@ -0,0 +1,24 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Execution](./kibana-plugin-plugins-expressions-server.execution.md) &gt; [interpret](./kibana-plugin-plugins-expressions-server.execution.interpret.md)
+
+## Execution.interpret() method
+
+<b>Signature:</b>
+
+```typescript
+interpret<T>(ast: ExpressionAstNode, input: T, options?: ExpressionExecOptions): Promise<unknown>;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  ast | <code>ExpressionAstNode</code> |  |
+|  input | <code>T</code> |  |
+|  options | <code>ExpressionExecOptions</code> |  |
+
+<b>Returns:</b>
+
+`Promise<unknown>`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.invokechain.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.invokechain.md
new file mode 100644
index 0000000000000..9ada611f32bf2
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.invokechain.md
@@ -0,0 +1,23 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Execution](./kibana-plugin-plugins-expressions-server.execution.md) &gt; [invokeChain](./kibana-plugin-plugins-expressions-server.execution.invokechain.md)
+
+## Execution.invokeChain() method
+
+<b>Signature:</b>
+
+```typescript
+invokeChain(chainArr: ExpressionAstFunction[], input: unknown): Promise<any>;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  chainArr | <code>ExpressionAstFunction[]</code> |  |
+|  input | <code>unknown</code> |  |
+
+<b>Returns:</b>
+
+`Promise<any>`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.invokefunction.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.invokefunction.md
new file mode 100644
index 0000000000000..4519d21ee250a
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.invokefunction.md
@@ -0,0 +1,24 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Execution](./kibana-plugin-plugins-expressions-server.execution.md) &gt; [invokeFunction](./kibana-plugin-plugins-expressions-server.execution.invokefunction.md)
+
+## Execution.invokeFunction() method
+
+<b>Signature:</b>
+
+```typescript
+invokeFunction(fn: ExpressionFunction, input: unknown, args: Record<string, unknown>): Promise<any>;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  fn | <code>ExpressionFunction</code> |  |
+|  input | <code>unknown</code> |  |
+|  args | <code>Record&lt;string, unknown&gt;</code> |  |
+
+<b>Returns:</b>
+
+`Promise<any>`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.md
new file mode 100644
index 0000000000000..fc663dd115580
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.md
@@ -0,0 +1,43 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Execution](./kibana-plugin-plugins-expressions-server.execution.md)
+
+## Execution class
+
+<b>Signature:</b>
+
+```typescript
+export declare class Execution<ExtraContext extends Record<string, unknown> = Record<string, unknown>, Input = unknown, Output = unknown, InspectorAdapters extends Adapters = ExtraContext['inspectorAdapters'] extends object ? ExtraContext['inspectorAdapters'] : DefaultInspectorAdapters> 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(params)](./kibana-plugin-plugins-expressions-server.execution._constructor_.md) |  | Constructs a new instance of the <code>Execution</code> class |
+
+## Properties
+
+|  Property | Modifiers | Type | Description |
+|  --- | --- | --- | --- |
+|  [context](./kibana-plugin-plugins-expressions-server.execution.context.md) |  | <code>ExecutionContext&lt;Input, InspectorAdapters&gt; &amp; ExtraContext</code> | Execution context - object that allows to do side-effects. Context is passed to every function. |
+|  [contract](./kibana-plugin-plugins-expressions-server.execution.contract.md) |  | <code>ExecutionContract&lt;ExtraContext, Input, Output, InspectorAdapters&gt;</code> | Contract is a public representation of <code>Execution</code> instances. Contract we can return to other plugins for their consumption. |
+|  [expression](./kibana-plugin-plugins-expressions-server.execution.expression.md) |  | <code>string</code> |  |
+|  [input](./kibana-plugin-plugins-expressions-server.execution.input.md) |  | <code>Input</code> | Initial input of the execution.<!-- -->N.B. It is initialized to <code>null</code> rather than <code>undefined</code> for legacy reasons, because in legacy interpreter it was set to <code>null</code> by default. |
+|  [inspectorAdapters](./kibana-plugin-plugins-expressions-server.execution.inspectoradapters.md) |  | <code>InspectorAdapters</code> |  |
+|  [params](./kibana-plugin-plugins-expressions-server.execution.params.md) |  | <code>ExecutionParams&lt;ExtraContext&gt;</code> |  |
+|  [result](./kibana-plugin-plugins-expressions-server.execution.result.md) |  | <code>Promise&lt;Output &#124; ExpressionValueError&gt;</code> |  |
+|  [state](./kibana-plugin-plugins-expressions-server.execution.state.md) |  | <code>ExecutionContainer&lt;Output &#124; ExpressionValueError&gt;</code> | Dynamic state of the execution. |
+
+## Methods
+
+|  Method | Modifiers | Description |
+|  --- | --- | --- |
+|  [cancel()](./kibana-plugin-plugins-expressions-server.execution.cancel.md) |  | Stop execution of expression. |
+|  [cast(value, toTypeNames)](./kibana-plugin-plugins-expressions-server.execution.cast.md) |  |  |
+|  [interpret(ast, input, options)](./kibana-plugin-plugins-expressions-server.execution.interpret.md) |  |  |
+|  [invokeChain(chainArr, input)](./kibana-plugin-plugins-expressions-server.execution.invokechain.md) |  |  |
+|  [invokeFunction(fn, input, args)](./kibana-plugin-plugins-expressions-server.execution.invokefunction.md) |  |  |
+|  [resolveArgs(fnDef, input, argAsts)](./kibana-plugin-plugins-expressions-server.execution.resolveargs.md) |  |  |
+|  [start(input)](./kibana-plugin-plugins-expressions-server.execution.start.md) |  | Call this method to start execution.<!-- -->N.B. <code>input</code> is initialized to <code>null</code> rather than <code>undefined</code> for legacy reasons, because in legacy interpreter it was set to <code>null</code> by default. |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.params.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.params.md
new file mode 100644
index 0000000000000..498f9bbfccfa4
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.params.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Execution](./kibana-plugin-plugins-expressions-server.execution.md) &gt; [params](./kibana-plugin-plugins-expressions-server.execution.params.md)
+
+## Execution.params property
+
+<b>Signature:</b>
+
+```typescript
+readonly params: ExecutionParams<ExtraContext>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.resolveargs.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.resolveargs.md
new file mode 100644
index 0000000000000..48cc43b2d7767
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.resolveargs.md
@@ -0,0 +1,24 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Execution](./kibana-plugin-plugins-expressions-server.execution.md) &gt; [resolveArgs](./kibana-plugin-plugins-expressions-server.execution.resolveargs.md)
+
+## Execution.resolveArgs() method
+
+<b>Signature:</b>
+
+```typescript
+resolveArgs(fnDef: ExpressionFunction, input: unknown, argAsts: any): Promise<any>;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  fnDef | <code>ExpressionFunction</code> |  |
+|  input | <code>unknown</code> |  |
+|  argAsts | <code>any</code> |  |
+
+<b>Returns:</b>
+
+`Promise<any>`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.result.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.result.md
new file mode 100644
index 0000000000000..be0134cd2542e
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.result.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Execution](./kibana-plugin-plugins-expressions-server.execution.md) &gt; [result](./kibana-plugin-plugins-expressions-server.execution.result.md)
+
+## Execution.result property
+
+<b>Signature:</b>
+
+```typescript
+get result(): Promise<Output | ExpressionValueError>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.start.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.start.md
new file mode 100644
index 0000000000000..9a4e93fe6a9af
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.start.md
@@ -0,0 +1,26 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Execution](./kibana-plugin-plugins-expressions-server.execution.md) &gt; [start](./kibana-plugin-plugins-expressions-server.execution.start.md)
+
+## Execution.start() method
+
+Call this method to start execution.
+
+N.B. `input` is initialized to `null` rather than `undefined` for legacy reasons, because in legacy interpreter it was set to `null` by default.
+
+<b>Signature:</b>
+
+```typescript
+start(input?: Input): void;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  input | <code>Input</code> |  |
+
+<b>Returns:</b>
+
+`void`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.state.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.state.md
new file mode 100644
index 0000000000000..41e7e693a1da4
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.state.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Execution](./kibana-plugin-plugins-expressions-server.execution.md) &gt; [state](./kibana-plugin-plugins-expressions-server.execution.state.md)
+
+## Execution.state property
+
+Dynamic state of the execution.
+
+<b>Signature:</b>
+
+```typescript
+readonly state: ExecutionContainer<Output | ExpressionValueError>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontainer.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontainer.md
new file mode 100644
index 0000000000000..5dc82fcbb9dd8
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontainer.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionContainer](./kibana-plugin-plugins-expressions-server.executioncontainer.md)
+
+## ExecutionContainer type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExecutionContainer<Output = ExpressionValue> = StateContainer<ExecutionState<Output>, ExecutionPureTransitions<Output>>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.abortsignal.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.abortsignal.md
new file mode 100644
index 0000000000000..5c43623c8e603
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.abortsignal.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionContext](./kibana-plugin-plugins-expressions-server.executioncontext.md) &gt; [abortSignal](./kibana-plugin-plugins-expressions-server.executioncontext.abortsignal.md)
+
+## ExecutionContext.abortSignal property
+
+Adds ability to abort current execution.
+
+<b>Signature:</b>
+
+```typescript
+abortSignal: AbortSignal;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.getinitialinput.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.getinitialinput.md
new file mode 100644
index 0000000000000..b5f9b91e1c7b7
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.getinitialinput.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionContext](./kibana-plugin-plugins-expressions-server.executioncontext.md) &gt; [getInitialInput](./kibana-plugin-plugins-expressions-server.executioncontext.getinitialinput.md)
+
+## ExecutionContext.getInitialInput property
+
+Get initial input with which execution started.
+
+<b>Signature:</b>
+
+```typescript
+getInitialInput: () => Input;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.getsavedobject.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.getsavedobject.md
new file mode 100644
index 0000000000000..b8c8f4f3bb067
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.getsavedobject.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionContext](./kibana-plugin-plugins-expressions-server.executioncontext.md) &gt; [getSavedObject](./kibana-plugin-plugins-expressions-server.executioncontext.getsavedobject.md)
+
+## ExecutionContext.getSavedObject property
+
+Allows to fetch saved objects from ElasticSearch. In browser `getSavedObject` function is provided automatically by the Expressions plugin. On the server the caller of the expression has to provide this context function. The reason is because on the browser we always know the user who tries to fetch a saved object, thus saved object client is scoped automatically to that user. However, on the server we can scope that saved object client to any user, or even not scope it at all and execute it as an "internal" user.
+
+<b>Signature:</b>
+
+```typescript
+getSavedObject?: <T extends SavedObjectAttributes = SavedObjectAttributes>(type: string, id: string) => Promise<SavedObject<T>>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.inspectoradapters.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.inspectoradapters.md
new file mode 100644
index 0000000000000..b937432e4c180
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.inspectoradapters.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionContext](./kibana-plugin-plugins-expressions-server.executioncontext.md) &gt; [inspectorAdapters](./kibana-plugin-plugins-expressions-server.executioncontext.inspectoradapters.md)
+
+## ExecutionContext.inspectorAdapters property
+
+Adapters for `inspector` plugin.
+
+<b>Signature:</b>
+
+```typescript
+inspectorAdapters: InspectorAdapters;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.md
@@ -0,0 +1,26 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionContext](./kibana-plugin-plugins-expressions-server.executioncontext.md)
+
+## ExecutionContext interface
+
+`ExecutionContext` is an object available to all functions during a single execution; it provides various methods to perform side-effects.
+
+<b>Signature:</b>
+
+```typescript
+export interface ExecutionContext<Input = unknown, InspectorAdapters extends Adapters = Adapters> 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [abortSignal](./kibana-plugin-plugins-expressions-server.executioncontext.abortsignal.md) | <code>AbortSignal</code> | Adds ability to abort current execution. |
+|  [getInitialInput](./kibana-plugin-plugins-expressions-server.executioncontext.getinitialinput.md) | <code>() =&gt; Input</code> | Get initial input with which execution started. |
+|  [getSavedObject](./kibana-plugin-plugins-expressions-server.executioncontext.getsavedobject.md) | <code>&lt;T extends SavedObjectAttributes = SavedObjectAttributes&gt;(type: string, id: string) =&gt; Promise&lt;SavedObject&lt;T&gt;&gt;</code> | Allows to fetch saved objects from ElasticSearch. In browser <code>getSavedObject</code> function is provided automatically by the Expressions plugin. On the server the caller of the expression has to provide this context function. The reason is because on the browser we always know the user who tries to fetch a saved object, thus saved object client is scoped automatically to that user. However, on the server we can scope that saved object client to any user, or even not scope it at all and execute it as an "internal" user. |
+|  [inspectorAdapters](./kibana-plugin-plugins-expressions-server.executioncontext.inspectoradapters.md) | <code>InspectorAdapters</code> | Adapters for <code>inspector</code> plugin. |
+|  [search](./kibana-plugin-plugins-expressions-server.executioncontext.search.md) | <code>ExecutionContextSearch</code> | Search context in which expression should operate. |
+|  [types](./kibana-plugin-plugins-expressions-server.executioncontext.types.md) | <code>Record&lt;string, ExpressionType&gt;</code> | A map of available expression types. |
+|  [variables](./kibana-plugin-plugins-expressions-server.executioncontext.variables.md) | <code>Record&lt;string, unknown&gt;</code> | Context variables that can be consumed using <code>var</code> and <code>var_set</code> functions. |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.search.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.search.md
new file mode 100644
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--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.search.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionContext](./kibana-plugin-plugins-expressions-server.executioncontext.md) &gt; [search](./kibana-plugin-plugins-expressions-server.executioncontext.search.md)
+
+## ExecutionContext.search property
+
+Search context in which expression should operate.
+
+<b>Signature:</b>
+
+```typescript
+search?: ExecutionContextSearch;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.types.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.types.md
new file mode 100644
index 0000000000000..9f594a588b200
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.types.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionContext](./kibana-plugin-plugins-expressions-server.executioncontext.md) &gt; [types](./kibana-plugin-plugins-expressions-server.executioncontext.types.md)
+
+## ExecutionContext.types property
+
+A map of available expression types.
+
+<b>Signature:</b>
+
+```typescript
+types: Record<string, ExpressionType>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.variables.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.variables.md
new file mode 100644
index 0000000000000..bce3b7bb1bc4d
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executioncontext.variables.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionContext](./kibana-plugin-plugins-expressions-server.executioncontext.md) &gt; [variables](./kibana-plugin-plugins-expressions-server.executioncontext.variables.md)
+
+## ExecutionContext.variables property
+
+Context variables that can be consumed using `var` and `var_set` functions.
+
+<b>Signature:</b>
+
+```typescript
+variables: Record<string, unknown>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionparams.ast.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionparams.ast.md
new file mode 100644
index 0000000000000..adaccf091bc5e
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionparams.ast.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionParams](./kibana-plugin-plugins-expressions-server.executionparams.md) &gt; [ast](./kibana-plugin-plugins-expressions-server.executionparams.ast.md)
+
+## ExecutionParams.ast property
+
+<b>Signature:</b>
+
+```typescript
+ast?: ExpressionAstExpression;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionparams.context.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionparams.context.md
new file mode 100644
index 0000000000000..8b9a210416dd6
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionparams.context.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionParams](./kibana-plugin-plugins-expressions-server.executionparams.md) &gt; [context](./kibana-plugin-plugins-expressions-server.executionparams.context.md)
+
+## ExecutionParams.context property
+
+<b>Signature:</b>
+
+```typescript
+context?: ExtraContext;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionparams.debug.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionparams.debug.md
new file mode 100644
index 0000000000000..b3631e0aeebe6
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionparams.debug.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionParams](./kibana-plugin-plugins-expressions-server.executionparams.md) &gt; [debug](./kibana-plugin-plugins-expressions-server.executionparams.debug.md)
+
+## ExecutionParams.debug property
+
+Whether to execute expression in \*debug mode\*. In \*debug mode\* inputs and outputs as well as all resolved arguments and time it took to execute each function are saved and are available for introspection.
+
+<b>Signature:</b>
+
+```typescript
+debug?: boolean;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionparams.executor.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionparams.executor.md
new file mode 100644
index 0000000000000..fef0f6f8e2495
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionparams.executor.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionParams](./kibana-plugin-plugins-expressions-server.executionparams.md) &gt; [executor](./kibana-plugin-plugins-expressions-server.executionparams.executor.md)
+
+## ExecutionParams.executor property
+
+<b>Signature:</b>
+
+```typescript
+executor: Executor<any>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionparams.expression.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionparams.expression.md
new file mode 100644
index 0000000000000..7d75bd51a611b
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionparams.expression.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionParams](./kibana-plugin-plugins-expressions-server.executionparams.md) &gt; [expression](./kibana-plugin-plugins-expressions-server.executionparams.expression.md)
+
+## ExecutionParams.expression property
+
+<b>Signature:</b>
+
+```typescript
+expression?: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionparams.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionparams.md
new file mode 100644
index 0000000000000..a7594bff48c1a
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionparams.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionParams](./kibana-plugin-plugins-expressions-server.executionparams.md)
+
+## ExecutionParams interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExecutionParams<ExtraContext extends Record<string, unknown> = Record<string, unknown>> 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [ast](./kibana-plugin-plugins-expressions-server.executionparams.ast.md) | <code>ExpressionAstExpression</code> |  |
+|  [context](./kibana-plugin-plugins-expressions-server.executionparams.context.md) | <code>ExtraContext</code> |  |
+|  [debug](./kibana-plugin-plugins-expressions-server.executionparams.debug.md) | <code>boolean</code> | Whether to execute expression in \*debug mode\*. In \*debug mode\* inputs and outputs as well as all resolved arguments and time it took to execute each function are saved and are available for introspection. |
+|  [executor](./kibana-plugin-plugins-expressions-server.executionparams.executor.md) | <code>Executor&lt;any&gt;</code> |  |
+|  [expression](./kibana-plugin-plugins-expressions-server.executionparams.expression.md) | <code>string</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionstate.ast.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionstate.ast.md
new file mode 100644
index 0000000000000..0eab94589a75e
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionstate.ast.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionState](./kibana-plugin-plugins-expressions-server.executionstate.md) &gt; [ast](./kibana-plugin-plugins-expressions-server.executionstate.ast.md)
+
+## ExecutionState.ast property
+
+<b>Signature:</b>
+
+```typescript
+ast: ExpressionAstExpression;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionstate.error.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionstate.error.md
new file mode 100644
index 0000000000000..350d38697571a
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionstate.error.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionState](./kibana-plugin-plugins-expressions-server.executionstate.md) &gt; [error](./kibana-plugin-plugins-expressions-server.executionstate.error.md)
+
+## ExecutionState.error property
+
+Error happened during the execution.
+
+<b>Signature:</b>
+
+```typescript
+error?: Error;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionstate.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionstate.md
new file mode 100644
index 0000000000000..a3b28bda8c864
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionstate.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionState](./kibana-plugin-plugins-expressions-server.executionstate.md)
+
+## ExecutionState interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExecutionState<Output = ExpressionValue> extends ExecutorState 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [ast](./kibana-plugin-plugins-expressions-server.executionstate.ast.md) | <code>ExpressionAstExpression</code> |  |
+|  [error](./kibana-plugin-plugins-expressions-server.executionstate.error.md) | <code>Error</code> | Error happened during the execution. |
+|  [result](./kibana-plugin-plugins-expressions-server.executionstate.result.md) | <code>Output</code> | Result of the expression execution. |
+|  [state](./kibana-plugin-plugins-expressions-server.executionstate.state.md) | <code>'not-started' &#124; 'pending' &#124; 'result' &#124; 'error'</code> | Tracks state of execution.<!-- -->- <code>not-started</code> - before .start() method was called. - <code>pending</code> - immediately after .start() method is called. - <code>result</code> - when expression execution completed. - <code>error</code> - when execution failed with error. |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionstate.result.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionstate.result.md
new file mode 100644
index 0000000000000..b23ba17172a10
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionstate.result.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionState](./kibana-plugin-plugins-expressions-server.executionstate.md) &gt; [result](./kibana-plugin-plugins-expressions-server.executionstate.result.md)
+
+## ExecutionState.result property
+
+Result of the expression execution.
+
+<b>Signature:</b>
+
+```typescript
+result?: Output;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionstate.state.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionstate.state.md
new file mode 100644
index 0000000000000..6dcfca1a4fa0e
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executionstate.state.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutionState](./kibana-plugin-plugins-expressions-server.executionstate.md) &gt; [state](./kibana-plugin-plugins-expressions-server.executionstate.state.md)
+
+## ExecutionState.state property
+
+Tracks state of execution.
+
+- `not-started` - before .start() method was called. - `pending` - immediately after .start() method is called. - `result` - when expression execution completed. - `error` - when execution failed with error.
+
+<b>Signature:</b>
+
+```typescript
+state: 'not-started' | 'pending' | 'result' | 'error';
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor._constructor_.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor._constructor_.md
new file mode 100644
index 0000000000000..f9b6759ef5529
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor._constructor_.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Executor](./kibana-plugin-plugins-expressions-server.executor.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-server.executor._constructor_.md)
+
+## Executor.(constructor)
+
+Constructs a new instance of the `Executor` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(state?: ExecutorState<Context>);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  state | <code>ExecutorState&lt;Context&gt;</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.context.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.context.md
new file mode 100644
index 0000000000000..d53401c6d0419
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.context.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Executor](./kibana-plugin-plugins-expressions-server.executor.md) &gt; [context](./kibana-plugin-plugins-expressions-server.executor.context.md)
+
+## Executor.context property
+
+<b>Signature:</b>
+
+```typescript
+get context(): Record<string, unknown>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.createexecution.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.createexecution.md
new file mode 100644
index 0000000000000..8ed228d70ff37
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.createexecution.md
@@ -0,0 +1,24 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Executor](./kibana-plugin-plugins-expressions-server.executor.md) &gt; [createExecution](./kibana-plugin-plugins-expressions-server.executor.createexecution.md)
+
+## Executor.createExecution() method
+
+<b>Signature:</b>
+
+```typescript
+createExecution<ExtraContext extends Record<string, unknown> = Record<string, unknown>, Input = unknown, Output = unknown>(ast: string | ExpressionAstExpression, context?: ExtraContext, { debug }?: ExpressionExecOptions): Execution<Context & ExtraContext, Input, Output>;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  ast | <code>string &#124; ExpressionAstExpression</code> |  |
+|  context | <code>ExtraContext</code> |  |
+|  { debug } | <code>ExpressionExecOptions</code> |  |
+
+<b>Returns:</b>
+
+`Execution<Context & ExtraContext, Input, Output>`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.createwithdefaults.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.createwithdefaults.md
new file mode 100644
index 0000000000000..67863cc9e9ebe
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.createwithdefaults.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Executor](./kibana-plugin-plugins-expressions-server.executor.md) &gt; [createWithDefaults](./kibana-plugin-plugins-expressions-server.executor.createwithdefaults.md)
+
+## Executor.createWithDefaults() method
+
+<b>Signature:</b>
+
+```typescript
+static createWithDefaults<Ctx extends Record<string, unknown> = Record<string, unknown>>(state?: ExecutorState<Ctx>): Executor<Ctx>;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  state | <code>ExecutorState&lt;Ctx&gt;</code> |  |
+
+<b>Returns:</b>
+
+`Executor<Ctx>`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.extendcontext.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.extendcontext.md
new file mode 100644
index 0000000000000..d78b4193b62fa
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.extendcontext.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Executor](./kibana-plugin-plugins-expressions-server.executor.md) &gt; [extendContext](./kibana-plugin-plugins-expressions-server.executor.extendcontext.md)
+
+## Executor.extendContext() method
+
+<b>Signature:</b>
+
+```typescript
+extendContext(extraContext: Record<string, unknown>): void;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  extraContext | <code>Record&lt;string, unknown&gt;</code> |  |
+
+<b>Returns:</b>
+
+`void`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.fork.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.fork.md
new file mode 100644
index 0000000000000..8cfec983e6cbd
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.fork.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Executor](./kibana-plugin-plugins-expressions-server.executor.md) &gt; [fork](./kibana-plugin-plugins-expressions-server.executor.fork.md)
+
+## Executor.fork() method
+
+<b>Signature:</b>
+
+```typescript
+fork(): Executor<Context>;
+```
+<b>Returns:</b>
+
+`Executor<Context>`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.functions.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.functions.md
new file mode 100644
index 0000000000000..36cbe8608c872
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.functions.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Executor](./kibana-plugin-plugins-expressions-server.executor.md) &gt; [functions](./kibana-plugin-plugins-expressions-server.executor.functions.md)
+
+## Executor.functions property
+
+> Warning: This API is now obsolete.
+> 
+> 
+
+<b>Signature:</b>
+
+```typescript
+readonly functions: FunctionsRegistry;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.getfunction.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.getfunction.md
new file mode 100644
index 0000000000000..0c3f307214d01
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.getfunction.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Executor](./kibana-plugin-plugins-expressions-server.executor.md) &gt; [getFunction](./kibana-plugin-plugins-expressions-server.executor.getfunction.md)
+
+## Executor.getFunction() method
+
+<b>Signature:</b>
+
+```typescript
+getFunction(name: string): ExpressionFunction | undefined;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  name | <code>string</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionFunction | undefined`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.getfunctions.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.getfunctions.md
new file mode 100644
index 0000000000000..9f4132e30297d
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.getfunctions.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Executor](./kibana-plugin-plugins-expressions-server.executor.md) &gt; [getFunctions](./kibana-plugin-plugins-expressions-server.executor.getfunctions.md)
+
+## Executor.getFunctions() method
+
+<b>Signature:</b>
+
+```typescript
+getFunctions(): Record<string, ExpressionFunction>;
+```
+<b>Returns:</b>
+
+`Record<string, ExpressionFunction>`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.gettype.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.gettype.md
new file mode 100644
index 0000000000000..ccff4bc632284
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.gettype.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Executor](./kibana-plugin-plugins-expressions-server.executor.md) &gt; [getType](./kibana-plugin-plugins-expressions-server.executor.gettype.md)
+
+## Executor.getType() method
+
+<b>Signature:</b>
+
+```typescript
+getType(name: string): ExpressionType | undefined;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  name | <code>string</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionType | undefined`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.gettypes.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.gettypes.md
new file mode 100644
index 0000000000000..8658f36867971
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.gettypes.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Executor](./kibana-plugin-plugins-expressions-server.executor.md) &gt; [getTypes](./kibana-plugin-plugins-expressions-server.executor.gettypes.md)
+
+## Executor.getTypes() method
+
+<b>Signature:</b>
+
+```typescript
+getTypes(): Record<string, ExpressionType>;
+```
+<b>Returns:</b>
+
+`Record<string, ExpressionType>`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.md
new file mode 100644
index 0000000000000..7e6bb8c7ded5e
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.md
@@ -0,0 +1,43 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Executor](./kibana-plugin-plugins-expressions-server.executor.md)
+
+## Executor class
+
+<b>Signature:</b>
+
+```typescript
+export declare class Executor<Context extends Record<string, unknown> = Record<string, unknown>> 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(state)](./kibana-plugin-plugins-expressions-server.executor._constructor_.md) |  | Constructs a new instance of the <code>Executor</code> class |
+
+## Properties
+
+|  Property | Modifiers | Type | Description |
+|  --- | --- | --- | --- |
+|  [context](./kibana-plugin-plugins-expressions-server.executor.context.md) |  | <code>Record&lt;string, unknown&gt;</code> |  |
+|  [functions](./kibana-plugin-plugins-expressions-server.executor.functions.md) |  | <code>FunctionsRegistry</code> |  |
+|  [state](./kibana-plugin-plugins-expressions-server.executor.state.md) |  | <code>ExecutorContainer&lt;Context&gt;</code> |  |
+|  [types](./kibana-plugin-plugins-expressions-server.executor.types.md) |  | <code>TypesRegistry</code> |  |
+
+## Methods
+
+|  Method | Modifiers | Description |
+|  --- | --- | --- |
+|  [createExecution(ast, context, { debug })](./kibana-plugin-plugins-expressions-server.executor.createexecution.md) |  |  |
+|  [createWithDefaults(state)](./kibana-plugin-plugins-expressions-server.executor.createwithdefaults.md) | <code>static</code> |  |
+|  [extendContext(extraContext)](./kibana-plugin-plugins-expressions-server.executor.extendcontext.md) |  |  |
+|  [fork()](./kibana-plugin-plugins-expressions-server.executor.fork.md) |  |  |
+|  [getFunction(name)](./kibana-plugin-plugins-expressions-server.executor.getfunction.md) |  |  |
+|  [getFunctions()](./kibana-plugin-plugins-expressions-server.executor.getfunctions.md) |  |  |
+|  [getType(name)](./kibana-plugin-plugins-expressions-server.executor.gettype.md) |  |  |
+|  [getTypes()](./kibana-plugin-plugins-expressions-server.executor.gettypes.md) |  |  |
+|  [registerFunction(functionDefinition)](./kibana-plugin-plugins-expressions-server.executor.registerfunction.md) |  |  |
+|  [registerType(typeDefinition)](./kibana-plugin-plugins-expressions-server.executor.registertype.md) |  |  |
+|  [run(ast, input, context)](./kibana-plugin-plugins-expressions-server.executor.run.md) |  | Execute expression and return result. |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.registerfunction.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.registerfunction.md
new file mode 100644
index 0000000000000..0cdd62735980c
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.registerfunction.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Executor](./kibana-plugin-plugins-expressions-server.executor.md) &gt; [registerFunction](./kibana-plugin-plugins-expressions-server.executor.registerfunction.md)
+
+## Executor.registerFunction() method
+
+<b>Signature:</b>
+
+```typescript
+registerFunction(functionDefinition: AnyExpressionFunctionDefinition | (() => AnyExpressionFunctionDefinition)): void;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  functionDefinition | <code>AnyExpressionFunctionDefinition &#124; (() =&gt; AnyExpressionFunctionDefinition)</code> |  |
+
+<b>Returns:</b>
+
+`void`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.registertype.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.registertype.md
new file mode 100644
index 0000000000000..355ff92921f10
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.registertype.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Executor](./kibana-plugin-plugins-expressions-server.executor.md) &gt; [registerType](./kibana-plugin-plugins-expressions-server.executor.registertype.md)
+
+## Executor.registerType() method
+
+<b>Signature:</b>
+
+```typescript
+registerType(typeDefinition: AnyExpressionTypeDefinition | (() => AnyExpressionTypeDefinition)): void;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  typeDefinition | <code>AnyExpressionTypeDefinition &#124; (() =&gt; AnyExpressionTypeDefinition)</code> |  |
+
+<b>Returns:</b>
+
+`void`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.run.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.run.md
new file mode 100644
index 0000000000000..784a1df5d3ac2
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.run.md
@@ -0,0 +1,26 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Executor](./kibana-plugin-plugins-expressions-server.executor.md) &gt; [run](./kibana-plugin-plugins-expressions-server.executor.run.md)
+
+## Executor.run() method
+
+Execute expression and return result.
+
+<b>Signature:</b>
+
+```typescript
+run<Input, Output, ExtraContext extends Record<string, unknown> = Record<string, unknown>>(ast: string | ExpressionAstExpression, input: Input, context?: ExtraContext): Promise<Output>;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  ast | <code>string &#124; ExpressionAstExpression</code> |  |
+|  input | <code>Input</code> |  |
+|  context | <code>ExtraContext</code> |  |
+
+<b>Returns:</b>
+
+`Promise<Output>`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.state.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.state.md
new file mode 100644
index 0000000000000..2c3041484712a
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.state.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Executor](./kibana-plugin-plugins-expressions-server.executor.md) &gt; [state](./kibana-plugin-plugins-expressions-server.executor.state.md)
+
+## Executor.state property
+
+<b>Signature:</b>
+
+```typescript
+readonly state: ExecutorContainer<Context>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.types.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.types.md
new file mode 100644
index 0000000000000..2082917cf0624
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executor.types.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Executor](./kibana-plugin-plugins-expressions-server.executor.md) &gt; [types](./kibana-plugin-plugins-expressions-server.executor.types.md)
+
+## Executor.types property
+
+> Warning: This API is now obsolete.
+> 
+> 
+
+<b>Signature:</b>
+
+```typescript
+readonly types: TypesRegistry;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executorcontainer.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executorcontainer.md
new file mode 100644
index 0000000000000..a3847c5ad9a77
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executorcontainer.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutorContainer](./kibana-plugin-plugins-expressions-server.executorcontainer.md)
+
+## ExecutorContainer type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExecutorContainer<Context extends Record<string, unknown> = Record<string, unknown>> = StateContainer<ExecutorState<Context>, ExecutorPureTransitions, ExecutorPureSelectors>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executorstate.context.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executorstate.context.md
new file mode 100644
index 0000000000000..0829f2d6caf04
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executorstate.context.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutorState](./kibana-plugin-plugins-expressions-server.executorstate.md) &gt; [context](./kibana-plugin-plugins-expressions-server.executorstate.context.md)
+
+## ExecutorState.context property
+
+<b>Signature:</b>
+
+```typescript
+context: Context;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executorstate.functions.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executorstate.functions.md
new file mode 100644
index 0000000000000..92a0865a7bb2f
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executorstate.functions.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutorState](./kibana-plugin-plugins-expressions-server.executorstate.md) &gt; [functions](./kibana-plugin-plugins-expressions-server.executorstate.functions.md)
+
+## ExecutorState.functions property
+
+<b>Signature:</b>
+
+```typescript
+functions: Record<string, ExpressionFunction>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executorstate.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executorstate.md
new file mode 100644
index 0000000000000..5faa326ee3534
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executorstate.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutorState](./kibana-plugin-plugins-expressions-server.executorstate.md)
+
+## ExecutorState interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExecutorState<Context extends Record<string, unknown> = Record<string, unknown>> 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [context](./kibana-plugin-plugins-expressions-server.executorstate.context.md) | <code>Context</code> |  |
+|  [functions](./kibana-plugin-plugins-expressions-server.executorstate.functions.md) | <code>Record&lt;string, ExpressionFunction&gt;</code> |  |
+|  [types](./kibana-plugin-plugins-expressions-server.executorstate.types.md) | <code>Record&lt;string, ExpressionType&gt;</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executorstate.types.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executorstate.types.md
new file mode 100644
index 0000000000000..a435fabfedf92
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.executorstate.types.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExecutorState](./kibana-plugin-plugins-expressions-server.executorstate.md) &gt; [types](./kibana-plugin-plugins-expressions-server.executorstate.types.md)
+
+## ExecutorState.types property
+
+<b>Signature:</b>
+
+```typescript
+types: Record<string, ExpressionType>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastargument.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastargument.md
new file mode 100644
index 0000000000000..0518949ad612f
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastargument.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstArgument](./kibana-plugin-plugins-expressions-server.expressionastargument.md)
+
+## ExpressionAstArgument type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionAstArgument = string | boolean | number | ExpressionAstExpression;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpression.chain.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpression.chain.md
new file mode 100644
index 0000000000000..cc8006b918dec
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpression.chain.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstExpression](./kibana-plugin-plugins-expressions-server.expressionastexpression.md) &gt; [chain](./kibana-plugin-plugins-expressions-server.expressionastexpression.chain.md)
+
+## ExpressionAstExpression.chain property
+
+<b>Signature:</b>
+
+```typescript
+chain: ExpressionAstFunction[];
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpression.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpression.md
new file mode 100644
index 0000000000000..b5f83d1af7cb7
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpression.md
@@ -0,0 +1,19 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstExpression](./kibana-plugin-plugins-expressions-server.expressionastexpression.md)
+
+## ExpressionAstExpression interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionAstExpression 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [chain](./kibana-plugin-plugins-expressions-server.expressionastexpression.chain.md) | <code>ExpressionAstFunction[]</code> |  |
+|  [type](./kibana-plugin-plugins-expressions-server.expressionastexpression.type.md) | <code>'expression'</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpression.type.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpression.type.md
new file mode 100644
index 0000000000000..46cd60cecaa84
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpression.type.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstExpression](./kibana-plugin-plugins-expressions-server.expressionastexpression.md) &gt; [type](./kibana-plugin-plugins-expressions-server.expressionastexpression.type.md)
+
+## ExpressionAstExpression.type property
+
+<b>Signature:</b>
+
+```typescript
+type: 'expression';
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.findfunction.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.findfunction.md
new file mode 100644
index 0000000000000..28cf8707c17d6
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.findfunction.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstExpressionBuilder](./kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.md) &gt; [findFunction](./kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.findfunction.md)
+
+## ExpressionAstExpressionBuilder.findFunction property
+
+Recursively searches expression for all ocurrences of the function, including in subexpressions.
+
+Useful when performing migrations on a specific function, as you can iterate over the array of references and update all functions at once.
+
+<b>Signature:</b>
+
+```typescript
+findFunction: <FnDef extends AnyExpressionFunctionDefinition = AnyExpressionFunctionDefinition>(fnName: InferFunctionDefinition<FnDef>['name']) => Array<ExpressionAstFunctionBuilder<FnDef>> | [];
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.functions.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.functions.md
new file mode 100644
index 0000000000000..c3e1add70511b
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.functions.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstExpressionBuilder](./kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.md) &gt; [functions](./kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.functions.md)
+
+## ExpressionAstExpressionBuilder.functions property
+
+Array of each of the `buildExpressionFunction()` instances in this expression. Use this to remove or reorder functions in the expression.
+
+<b>Signature:</b>
+
+```typescript
+functions: ExpressionAstFunctionBuilder[];
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.md
new file mode 100644
index 0000000000000..50a9c76daaa2b
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstExpressionBuilder](./kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.md)
+
+## ExpressionAstExpressionBuilder interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionAstExpressionBuilder 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [findFunction](./kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.findfunction.md) | <code>&lt;FnDef extends AnyExpressionFunctionDefinition = AnyExpressionFunctionDefinition&gt;(fnName: InferFunctionDefinition&lt;FnDef&gt;['name']) =&gt; Array&lt;ExpressionAstFunctionBuilder&lt;FnDef&gt;&gt; &#124; []</code> | Recursively searches expression for all ocurrences of the function, including in subexpressions.<!-- -->Useful when performing migrations on a specific function, as you can iterate over the array of references and update all functions at once. |
+|  [functions](./kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.functions.md) | <code>ExpressionAstFunctionBuilder[]</code> | Array of each of the <code>buildExpressionFunction()</code> instances in this expression. Use this to remove or reorder functions in the expression. |
+|  [toAst](./kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.toast.md) | <code>() =&gt; ExpressionAstExpression</code> | Converts expression to an AST. <code>ExpressionAstExpression</code> |
+|  [toString](./kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.tostring.md) | <code>() =&gt; string</code> | Converts expression to an expression string. <code>string</code> |
+|  [type](./kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.type.md) | <code>'expression_builder'</code> | Used to identify expression builder objects. |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.toast.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.toast.md
new file mode 100644
index 0000000000000..5c6189e6a46c4
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.toast.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstExpressionBuilder](./kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.md) &gt; [toAst](./kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.toast.md)
+
+## ExpressionAstExpressionBuilder.toAst property
+
+Converts expression to an AST.
+
+ `ExpressionAstExpression`
+
+<b>Signature:</b>
+
+```typescript
+toAst: () => ExpressionAstExpression;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.tostring.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.tostring.md
new file mode 100644
index 0000000000000..80aaeef1700c3
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.tostring.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstExpressionBuilder](./kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.md) &gt; [toString](./kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.tostring.md)
+
+## ExpressionAstExpressionBuilder.toString property
+
+Converts expression to an expression string.
+
+ `string`
+
+<b>Signature:</b>
+
+```typescript
+toString: () => string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.type.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.type.md
new file mode 100644
index 0000000000000..401b2e3725e84
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.type.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstExpressionBuilder](./kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.md) &gt; [type](./kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.type.md)
+
+## ExpressionAstExpressionBuilder.type property
+
+Used to identify expression builder objects.
+
+<b>Signature:</b>
+
+```typescript
+type: 'expression_builder';
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunction.arguments.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunction.arguments.md
new file mode 100644
index 0000000000000..052cadffb9bdb
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunction.arguments.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstFunction](./kibana-plugin-plugins-expressions-server.expressionastfunction.md) &gt; [arguments](./kibana-plugin-plugins-expressions-server.expressionastfunction.arguments.md)
+
+## ExpressionAstFunction.arguments property
+
+<b>Signature:</b>
+
+```typescript
+arguments: Record<string, ExpressionAstArgument[]>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunction.debug.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunction.debug.md
new file mode 100644
index 0000000000000..b3227c2ac5822
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunction.debug.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstFunction](./kibana-plugin-plugins-expressions-server.expressionastfunction.md) &gt; [debug](./kibana-plugin-plugins-expressions-server.expressionastfunction.debug.md)
+
+## ExpressionAstFunction.debug property
+
+Debug information added to each function when expression is executed in \*debug mode\*.
+
+<b>Signature:</b>
+
+```typescript
+debug?: ExpressionAstFunctionDebug;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunction.function.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunction.function.md
new file mode 100644
index 0000000000000..9964409f49119
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunction.function.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstFunction](./kibana-plugin-plugins-expressions-server.expressionastfunction.md) &gt; [function](./kibana-plugin-plugins-expressions-server.expressionastfunction.function.md)
+
+## ExpressionAstFunction.function property
+
+<b>Signature:</b>
+
+```typescript
+function: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunction.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunction.md
new file mode 100644
index 0000000000000..1d49de44b571d
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunction.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstFunction](./kibana-plugin-plugins-expressions-server.expressionastfunction.md)
+
+## ExpressionAstFunction interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionAstFunction 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [arguments](./kibana-plugin-plugins-expressions-server.expressionastfunction.arguments.md) | <code>Record&lt;string, ExpressionAstArgument[]&gt;</code> |  |
+|  [debug](./kibana-plugin-plugins-expressions-server.expressionastfunction.debug.md) | <code>ExpressionAstFunctionDebug</code> | Debug information added to each function when expression is executed in \*debug mode\*. |
+|  [function](./kibana-plugin-plugins-expressions-server.expressionastfunction.function.md) | <code>string</code> |  |
+|  [type](./kibana-plugin-plugins-expressions-server.expressionastfunction.type.md) | <code>'function'</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunction.type.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunction.type.md
new file mode 100644
index 0000000000000..3fd10524c1599
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunction.type.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstFunction](./kibana-plugin-plugins-expressions-server.expressionastfunction.md) &gt; [type](./kibana-plugin-plugins-expressions-server.expressionastfunction.type.md)
+
+## ExpressionAstFunction.type property
+
+<b>Signature:</b>
+
+```typescript
+type: 'function';
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.addargument.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.addargument.md
new file mode 100644
index 0000000000000..29e3baec18a2e
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.addargument.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.md) &gt; [addArgument](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.addargument.md)
+
+## ExpressionAstFunctionBuilder.addArgument property
+
+Adds an additional argument to the function. For multi-args, this should be called once for each new arg. Note that TS will not enforce whether multi-args are available, so only use this to update an existing arg if you are certain it is a multi-arg.
+
+<b>Signature:</b>
+
+```typescript
+addArgument: <A extends FunctionArgName<FnDef>>(name: A, value: FunctionArgs<FnDef>[A] | ExpressionAstExpressionBuilder) => this;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.arguments.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.arguments.md
new file mode 100644
index 0000000000000..4c0eee637b3e1
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.arguments.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.md) &gt; [arguments](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.arguments.md)
+
+## ExpressionAstFunctionBuilder.arguments property
+
+Object of all args currently added to the function. This is structured similarly to `ExpressionAstFunction['arguments']`<!-- -->, however any subexpressions are returned as expression builder instances instead of expression ASTs.
+
+<b>Signature:</b>
+
+```typescript
+arguments: FunctionBuilderArguments<FnDef>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.getargument.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.getargument.md
new file mode 100644
index 0000000000000..09b76ccbf23d9
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.getargument.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.md) &gt; [getArgument](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.getargument.md)
+
+## ExpressionAstFunctionBuilder.getArgument property
+
+Retrieves an existing argument by name. Useful when you want to retrieve the current array of args and add something to it before calling `replaceArgument`<!-- -->. Any subexpression arguments will be returned as expression builder instances.
+
+<b>Signature:</b>
+
+```typescript
+getArgument: <A extends FunctionArgName<FnDef>>(name: A) => Array<FunctionArgs<FnDef>[A] | ExpressionAstExpressionBuilder> | undefined;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.md
new file mode 100644
index 0000000000000..2a502d6f05e0b
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.md
@@ -0,0 +1,26 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.md)
+
+## ExpressionAstFunctionBuilder interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionAstFunctionBuilder<FnDef extends AnyExpressionFunctionDefinition = AnyExpressionFunctionDefinition> 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [addArgument](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.addargument.md) | <code>&lt;A extends FunctionArgName&lt;FnDef&gt;&gt;(name: A, value: FunctionArgs&lt;FnDef&gt;[A] &#124; ExpressionAstExpressionBuilder) =&gt; this</code> | Adds an additional argument to the function. For multi-args, this should be called once for each new arg. Note that TS will not enforce whether multi-args are available, so only use this to update an existing arg if you are certain it is a multi-arg. |
+|  [arguments](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.arguments.md) | <code>FunctionBuilderArguments&lt;FnDef&gt;</code> | Object of all args currently added to the function. This is structured similarly to <code>ExpressionAstFunction['arguments']</code>, however any subexpressions are returned as expression builder instances instead of expression ASTs. |
+|  [getArgument](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.getargument.md) | <code>&lt;A extends FunctionArgName&lt;FnDef&gt;&gt;(name: A) =&gt; Array&lt;FunctionArgs&lt;FnDef&gt;[A] &#124; ExpressionAstExpressionBuilder&gt; &#124; undefined</code> | Retrieves an existing argument by name. Useful when you want to retrieve the current array of args and add something to it before calling <code>replaceArgument</code>. Any subexpression arguments will be returned as expression builder instances. |
+|  [name](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.name.md) | <code>InferFunctionDefinition&lt;FnDef&gt;['name']</code> | Name of this expression function. |
+|  [removeArgument](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.removeargument.md) | <code>&lt;A extends OptionalKeys&lt;FunctionArgs&lt;FnDef&gt;&gt;&gt;(name: A) =&gt; this</code> | Removes an (optional) argument from the function.<!-- -->TypeScript will enforce that you only remove optional arguments. For manipulating required args, use <code>replaceArgument</code>. |
+|  [replaceArgument](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.replaceargument.md) | <code>&lt;A extends FunctionArgName&lt;FnDef&gt;&gt;(name: A, value: Array&lt;FunctionArgs&lt;FnDef&gt;[A] &#124; ExpressionAstExpressionBuilder&gt;) =&gt; this</code> | Overwrites an existing argument with a new value. In order to support multi-args, the value given must always be an array. |
+|  [toAst](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.toast.md) | <code>() =&gt; ExpressionAstFunction</code> | Converts function to an AST. <code>ExpressionAstFunction</code> |
+|  [toString](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.tostring.md) | <code>() =&gt; string</code> | Converts function to an expression string. <code>string</code> |
+|  [type](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.type.md) | <code>'expression_function_builder'</code> | Used to identify expression function builder objects. |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.name.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.name.md
new file mode 100644
index 0000000000000..a2b6a4128549f
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.name.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.md) &gt; [name](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.name.md)
+
+## ExpressionAstFunctionBuilder.name property
+
+Name of this expression function.
+
+<b>Signature:</b>
+
+```typescript
+name: InferFunctionDefinition<FnDef>['name'];
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.removeargument.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.removeargument.md
new file mode 100644
index 0000000000000..b5fd0cc7e3727
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.removeargument.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.md) &gt; [removeArgument](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.removeargument.md)
+
+## ExpressionAstFunctionBuilder.removeArgument property
+
+Removes an (optional) argument from the function.
+
+TypeScript will enforce that you only remove optional arguments. For manipulating required args, use `replaceArgument`<!-- -->.
+
+<b>Signature:</b>
+
+```typescript
+removeArgument: <A extends OptionalKeys<FunctionArgs<FnDef>>>(name: A) => this;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.replaceargument.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.replaceargument.md
new file mode 100644
index 0000000000000..943d8ea235763
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.replaceargument.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.md) &gt; [replaceArgument](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.replaceargument.md)
+
+## ExpressionAstFunctionBuilder.replaceArgument property
+
+Overwrites an existing argument with a new value. In order to support multi-args, the value given must always be an array.
+
+<b>Signature:</b>
+
+```typescript
+replaceArgument: <A extends FunctionArgName<FnDef>>(name: A, value: Array<FunctionArgs<FnDef>[A] | ExpressionAstExpressionBuilder>) => this;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.toast.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.toast.md
new file mode 100644
index 0000000000000..a8e9205610501
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.toast.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.md) &gt; [toAst](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.toast.md)
+
+## ExpressionAstFunctionBuilder.toAst property
+
+Converts function to an AST.
+
+ `ExpressionAstFunction`
+
+<b>Signature:</b>
+
+```typescript
+toAst: () => ExpressionAstFunction;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.tostring.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.tostring.md
new file mode 100644
index 0000000000000..af307cbc84c9f
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.tostring.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.md) &gt; [toString](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.tostring.md)
+
+## ExpressionAstFunctionBuilder.toString property
+
+Converts function to an expression string.
+
+ `string`
+
+<b>Signature:</b>
+
+```typescript
+toString: () => string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.type.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.type.md
new file mode 100644
index 0000000000000..ed1db54c6eeaa
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.type.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.md) &gt; [type](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.type.md)
+
+## ExpressionAstFunctionBuilder.type property
+
+Used to identify expression function builder objects.
+
+<b>Signature:</b>
+
+```typescript
+type: 'expression_function_builder';
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastnode.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastnode.md
new file mode 100644
index 0000000000000..d04c5556ff0ff
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionastnode.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionAstNode](./kibana-plugin-plugins-expressions-server.expressionastnode.md)
+
+## ExpressionAstNode type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionAstNode = ExpressionAstExpression | ExpressionAstFunction | ExpressionAstArgument;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction._constructor_.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction._constructor_.md
new file mode 100644
index 0000000000000..96ed22f3277b4
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction._constructor_.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-server.expressionfunction.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-server.expressionfunction._constructor_.md)
+
+## ExpressionFunction.(constructor)
+
+Constructs a new instance of the `ExpressionFunction` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(functionDefinition: AnyExpressionFunctionDefinition);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  functionDefinition | <code>AnyExpressionFunctionDefinition</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.accepts.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.accepts.md
new file mode 100644
index 0000000000000..25008a56e0465
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.accepts.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-server.expressionfunction.md) &gt; [accepts](./kibana-plugin-plugins-expressions-server.expressionfunction.accepts.md)
+
+## ExpressionFunction.accepts property
+
+<b>Signature:</b>
+
+```typescript
+accepts: (type: string) => boolean;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.aliases.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.aliases.md
new file mode 100644
index 0000000000000..6e11246275d04
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.aliases.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-server.expressionfunction.md) &gt; [aliases](./kibana-plugin-plugins-expressions-server.expressionfunction.aliases.md)
+
+## ExpressionFunction.aliases property
+
+Aliases that can be used instead of `name`<!-- -->.
+
+<b>Signature:</b>
+
+```typescript
+aliases: string[];
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.args.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.args.md
new file mode 100644
index 0000000000000..ffa8cd0d11f7a
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.args.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-server.expressionfunction.md) &gt; [args](./kibana-plugin-plugins-expressions-server.expressionfunction.args.md)
+
+## ExpressionFunction.args property
+
+Specification of expression function parameters.
+
+<b>Signature:</b>
+
+```typescript
+args: Record<string, ExpressionFunctionParameter>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.fn.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.fn.md
new file mode 100644
index 0000000000000..12056cac12cce
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.fn.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-server.expressionfunction.md) &gt; [fn](./kibana-plugin-plugins-expressions-server.expressionfunction.fn.md)
+
+## ExpressionFunction.fn property
+
+Function to run function (context, args)
+
+<b>Signature:</b>
+
+```typescript
+fn: (input: ExpressionValue, params: Record<string, any>, handlers: object) => ExpressionValue;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.help.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.help.md
new file mode 100644
index 0000000000000..0a20a1ec60860
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.help.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-server.expressionfunction.md) &gt; [help](./kibana-plugin-plugins-expressions-server.expressionfunction.help.md)
+
+## ExpressionFunction.help property
+
+A short help text.
+
+<b>Signature:</b>
+
+```typescript
+help: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.inputtypes.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.inputtypes.md
new file mode 100644
index 0000000000000..1fa11bbb77416
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.inputtypes.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-server.expressionfunction.md) &gt; [inputTypes](./kibana-plugin-plugins-expressions-server.expressionfunction.inputtypes.md)
+
+## ExpressionFunction.inputTypes property
+
+Type of inputs that this function supports.
+
+<b>Signature:</b>
+
+```typescript
+inputTypes: string[] | undefined;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.md
new file mode 100644
index 0000000000000..aac3878b8c859
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.md
@@ -0,0 +1,31 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-server.expressionfunction.md)
+
+## ExpressionFunction class
+
+<b>Signature:</b>
+
+```typescript
+export declare class ExpressionFunction 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(functionDefinition)](./kibana-plugin-plugins-expressions-server.expressionfunction._constructor_.md) |  | Constructs a new instance of the <code>ExpressionFunction</code> class |
+
+## Properties
+
+|  Property | Modifiers | Type | Description |
+|  --- | --- | --- | --- |
+|  [accepts](./kibana-plugin-plugins-expressions-server.expressionfunction.accepts.md) |  | <code>(type: string) =&gt; boolean</code> |  |
+|  [aliases](./kibana-plugin-plugins-expressions-server.expressionfunction.aliases.md) |  | <code>string[]</code> | Aliases that can be used instead of <code>name</code>. |
+|  [args](./kibana-plugin-plugins-expressions-server.expressionfunction.args.md) |  | <code>Record&lt;string, ExpressionFunctionParameter&gt;</code> | Specification of expression function parameters. |
+|  [fn](./kibana-plugin-plugins-expressions-server.expressionfunction.fn.md) |  | <code>(input: ExpressionValue, params: Record&lt;string, any&gt;, handlers: object) =&gt; ExpressionValue</code> | Function to run function (context, args) |
+|  [help](./kibana-plugin-plugins-expressions-server.expressionfunction.help.md) |  | <code>string</code> | A short help text. |
+|  [inputTypes](./kibana-plugin-plugins-expressions-server.expressionfunction.inputtypes.md) |  | <code>string[] &#124; undefined</code> | Type of inputs that this function supports. |
+|  [name](./kibana-plugin-plugins-expressions-server.expressionfunction.name.md) |  | <code>string</code> | Name of function |
+|  [type](./kibana-plugin-plugins-expressions-server.expressionfunction.type.md) |  | <code>string</code> | Return type of function. This SHOULD be supplied. We use it for UI and autocomplete hinting. We may also use it for optimizations in the future. |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.name.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.name.md
new file mode 100644
index 0000000000000..46115c10c79ad
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.name.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-server.expressionfunction.md) &gt; [name](./kibana-plugin-plugins-expressions-server.expressionfunction.name.md)
+
+## ExpressionFunction.name property
+
+Name of function
+
+<b>Signature:</b>
+
+```typescript
+name: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.type.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.type.md
new file mode 100644
index 0000000000000..82bfff184b7cf
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunction.type.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-server.expressionfunction.md) &gt; [type](./kibana-plugin-plugins-expressions-server.expressionfunction.type.md)
+
+## ExpressionFunction.type property
+
+Return type of function. This SHOULD be supplied. We use it for UI and autocomplete hinting. We may also use it for optimizations in the future.
+
+<b>Signature:</b>
+
+```typescript
+type: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.aliases.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.aliases.md
new file mode 100644
index 0000000000000..3f5a608cc9bd2
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.aliases.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.md) &gt; [aliases](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.aliases.md)
+
+## ExpressionFunctionDefinition.aliases property
+
+ What is this?
+
+<b>Signature:</b>
+
+```typescript
+aliases?: string[];
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.args.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.args.md
new file mode 100644
index 0000000000000..4ceb1d92bf8eb
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.args.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.md) &gt; [args](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.args.md)
+
+## ExpressionFunctionDefinition.args property
+
+Specification of arguments that function supports. This list will also be used for autocomplete functionality when your function is being edited.
+
+<b>Signature:</b>
+
+```typescript
+args: {
+        [key in keyof Arguments]: ArgumentType<Arguments[key]>;
+    };
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.context.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.context.md
new file mode 100644
index 0000000000000..54d5c7c8a688d
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.context.md
@@ -0,0 +1,18 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.md) &gt; [context](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.context.md)
+
+## ExpressionFunctionDefinition.context property
+
+> Warning: This API is now obsolete.
+> 
+> Use `inputTypes` instead.
+> 
+
+<b>Signature:</b>
+
+```typescript
+context?: {
+        types: AnyExpressionFunctionDefinition['inputTypes'];
+    };
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.fn.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.fn.md
new file mode 100644
index 0000000000000..41f85be7141be
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.fn.md
@@ -0,0 +1,26 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.md) &gt; [fn](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.fn.md)
+
+## ExpressionFunctionDefinition.fn() method
+
+The actual implementation of the function.
+
+<b>Signature:</b>
+
+```typescript
+fn(input: Input, args: Arguments, context: Context): Output;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  input | <code>Input</code> |  |
+|  args | <code>Arguments</code> |  |
+|  context | <code>Context</code> |  |
+
+<b>Returns:</b>
+
+`Output`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.help.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.help.md
new file mode 100644
index 0000000000000..594cb768f3caa
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.help.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.md) &gt; [help](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.help.md)
+
+## ExpressionFunctionDefinition.help property
+
+Help text displayed in the Expression editor. This text should be internationalized.
+
+<b>Signature:</b>
+
+```typescript
+help: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.inputtypes.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.inputtypes.md
new file mode 100644
index 0000000000000..b47dc915cc72e
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.inputtypes.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.md) &gt; [inputTypes](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.inputtypes.md)
+
+## ExpressionFunctionDefinition.inputTypes property
+
+List of allowed type names for input value of this function. If this property is set the input of function will be cast to the first possible type in this list. If this property is missing the input will be provided to the function as-is.
+
+<b>Signature:</b>
+
+```typescript
+inputTypes?: Array<TypeToString<Input>>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.md
new file mode 100644
index 0000000000000..6463c6ac537b9
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.md
@@ -0,0 +1,32 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.md)
+
+## ExpressionFunctionDefinition interface
+
+`ExpressionFunctionDefinition` is the interface plugins have to implement to register a function in `expressions` plugin.
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionFunctionDefinition<Name extends string, Input, Arguments extends Record<string, any>, Output, Context extends ExecutionContext = ExecutionContext> 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [aliases](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.aliases.md) | <code>string[]</code> |  What is this? |
+|  [args](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.args.md) | <code>{</code><br/><code>        [key in keyof Arguments]: ArgumentType&lt;Arguments[key]&gt;;</code><br/><code>    }</code> | Specification of arguments that function supports. This list will also be used for autocomplete functionality when your function is being edited. |
+|  [context](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.context.md) | <code>{</code><br/><code>        types: AnyExpressionFunctionDefinition['inputTypes'];</code><br/><code>    }</code> |  |
+|  [help](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.help.md) | <code>string</code> | Help text displayed in the Expression editor. This text should be internationalized. |
+|  [inputTypes](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.inputtypes.md) | <code>Array&lt;TypeToString&lt;Input&gt;&gt;</code> | List of allowed type names for input value of this function. If this property is set the input of function will be cast to the first possible type in this list. If this property is missing the input will be provided to the function as-is. |
+|  [name](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.name.md) | <code>Name</code> | The name of the function, as will be used in expression. |
+|  [type](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.type.md) | <code>TypeToString&lt;UnwrapPromiseOrReturn&lt;Output&gt;&gt;</code> | Name of type of value this function outputs. |
+
+## Methods
+
+|  Method | Description |
+|  --- | --- |
+|  [fn(input, args, context)](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.fn.md) | The actual implementation of the function. |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.name.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.name.md
new file mode 100644
index 0000000000000..177b44aab4ce8
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.name.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.md) &gt; [name](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.name.md)
+
+## ExpressionFunctionDefinition.name property
+
+The name of the function, as will be used in expression.
+
+<b>Signature:</b>
+
+```typescript
+name: Name;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.type.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.type.md
new file mode 100644
index 0000000000000..a73ded342f053
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.type.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.md) &gt; [type](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.type.md)
+
+## ExpressionFunctionDefinition.type property
+
+Name of type of value this function outputs.
+
+<b>Signature:</b>
+
+```typescript
+type?: TypeToString<UnwrapPromiseOrReturn<Output>>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.clog.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.clog.md
new file mode 100644
index 0000000000000..0c01e93152c75
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.clog.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionDefinitions](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.md) &gt; [clog](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.clog.md)
+
+## ExpressionFunctionDefinitions.clog property
+
+<b>Signature:</b>
+
+```typescript
+clog: ExpressionFunctionClog;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.font.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.font.md
new file mode 100644
index 0000000000000..842e3e069d91e
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.font.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionDefinitions](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.md) &gt; [font](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.font.md)
+
+## ExpressionFunctionDefinitions.font property
+
+<b>Signature:</b>
+
+```typescript
+font: ExpressionFunctionFont;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.kibana.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.kibana.md
new file mode 100644
index 0000000000000..8e6d189f8f450
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.kibana.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionDefinitions](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.md) &gt; [kibana](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.kibana.md)
+
+## ExpressionFunctionDefinitions.kibana property
+
+<b>Signature:</b>
+
+```typescript
+kibana: ExpressionFunctionKibana;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.kibana_context.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.kibana_context.md
new file mode 100644
index 0000000000000..f9e248ad6d913
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.kibana_context.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionDefinitions](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.md) &gt; [kibana\_context](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.kibana_context.md)
+
+## ExpressionFunctionDefinitions.kibana\_context property
+
+<b>Signature:</b>
+
+```typescript
+kibana_context: ExpressionFunctionKibanaContext;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.md
new file mode 100644
index 0000000000000..71cd0b98a68c2
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.md
@@ -0,0 +1,26 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionDefinitions](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.md)
+
+## ExpressionFunctionDefinitions interface
+
+A mapping of `ExpressionFunctionDefinition`<!-- -->s for functions which the Expressions services provides out-of-the-box. Any new functions registered by the Expressions plugin should have their types added here.
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionFunctionDefinitions 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [clog](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.clog.md) | <code>ExpressionFunctionClog</code> |  |
+|  [font](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.font.md) | <code>ExpressionFunctionFont</code> |  |
+|  [kibana\_context](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.kibana_context.md) | <code>ExpressionFunctionKibanaContext</code> |  |
+|  [kibana](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.kibana.md) | <code>ExpressionFunctionKibana</code> |  |
+|  [theme](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.theme.md) | <code>ExpressionFunctionTheme</code> |  |
+|  [var\_set](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.var_set.md) | <code>ExpressionFunctionVarSet</code> |  |
+|  [var](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.var.md) | <code>ExpressionFunctionVar</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.theme.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.theme.md
new file mode 100644
index 0000000000000..98291fe35c1aa
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.theme.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionDefinitions](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.md) &gt; [theme](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.theme.md)
+
+## ExpressionFunctionDefinitions.theme property
+
+<b>Signature:</b>
+
+```typescript
+theme: ExpressionFunctionTheme;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.var.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.var.md
new file mode 100644
index 0000000000000..55d576193ba9c
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.var.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionDefinitions](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.md) &gt; [var](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.var.md)
+
+## ExpressionFunctionDefinitions.var property
+
+<b>Signature:</b>
+
+```typescript
+var: ExpressionFunctionVar;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.var_set.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.var_set.md
new file mode 100644
index 0000000000000..3163cf1accab1
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.var_set.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionDefinitions](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.md) &gt; [var\_set](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.var_set.md)
+
+## ExpressionFunctionDefinitions.var\_set property
+
+<b>Signature:</b>
+
+```typescript
+var_set: ExpressionFunctionVarSet;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionkibana.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionkibana.md
new file mode 100644
index 0000000000000..aac2ae1c3ca4e
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionkibana.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionKibana](./kibana-plugin-plugins-expressions-server.expressionfunctionkibana.md)
+
+## ExpressionFunctionKibana type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionFunctionKibana = ExpressionFunctionDefinition<'kibana', ExpressionValueSearchContext | null, object, ExpressionValueSearchContext>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter._constructor_.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter._constructor_.md
new file mode 100644
index 0000000000000..a9ad2069cfe15
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter._constructor_.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter._constructor_.md)
+
+## ExpressionFunctionParameter.(constructor)
+
+Constructs a new instance of the `ExpressionFunctionParameter` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(name: string, arg: ArgumentType<any>);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  name | <code>string</code> |  |
+|  arg | <code>ArgumentType&lt;any&gt;</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.accepts.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.accepts.md
new file mode 100644
index 0000000000000..083bbdf1da4e7
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.accepts.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.md) &gt; [accepts](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.accepts.md)
+
+## ExpressionFunctionParameter.accepts() method
+
+<b>Signature:</b>
+
+```typescript
+accepts(type: string): boolean;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  type | <code>string</code> |  |
+
+<b>Returns:</b>
+
+`boolean`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.aliases.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.aliases.md
new file mode 100644
index 0000000000000..c7d27a48bdad5
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.aliases.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.md) &gt; [aliases](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.aliases.md)
+
+## ExpressionFunctionParameter.aliases property
+
+<b>Signature:</b>
+
+```typescript
+aliases: string[];
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.default.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.default.md
new file mode 100644
index 0000000000000..d4105febffe86
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.default.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.md) &gt; [default](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.default.md)
+
+## ExpressionFunctionParameter.default property
+
+<b>Signature:</b>
+
+```typescript
+default: any;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.help.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.help.md
new file mode 100644
index 0000000000000..b21626df64121
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.help.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.md) &gt; [help](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.help.md)
+
+## ExpressionFunctionParameter.help property
+
+<b>Signature:</b>
+
+```typescript
+help: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.md
new file mode 100644
index 0000000000000..e9e35183e4e76
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.md
@@ -0,0 +1,38 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.md)
+
+## ExpressionFunctionParameter class
+
+<b>Signature:</b>
+
+```typescript
+export declare class ExpressionFunctionParameter 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(name, arg)](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter._constructor_.md) |  | Constructs a new instance of the <code>ExpressionFunctionParameter</code> class |
+
+## Properties
+
+|  Property | Modifiers | Type | Description |
+|  --- | --- | --- | --- |
+|  [aliases](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.aliases.md) |  | <code>string[]</code> |  |
+|  [default](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.default.md) |  | <code>any</code> |  |
+|  [help](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.help.md) |  | <code>string</code> |  |
+|  [multi](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.multi.md) |  | <code>boolean</code> |  |
+|  [name](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.name.md) |  | <code>string</code> |  |
+|  [options](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.options.md) |  | <code>any[]</code> |  |
+|  [required](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.required.md) |  | <code>boolean</code> |  |
+|  [resolve](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.resolve.md) |  | <code>boolean</code> |  |
+|  [types](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.types.md) |  | <code>string[]</code> |  |
+
+## Methods
+
+|  Method | Modifiers | Description |
+|  --- | --- | --- |
+|  [accepts(type)](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.accepts.md) |  |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.multi.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.multi.md
new file mode 100644
index 0000000000000..86e1921910a30
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.multi.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.md) &gt; [multi](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.multi.md)
+
+## ExpressionFunctionParameter.multi property
+
+<b>Signature:</b>
+
+```typescript
+multi: boolean;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.name.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.name.md
new file mode 100644
index 0000000000000..8aab81d92e65a
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.name.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.md) &gt; [name](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.name.md)
+
+## ExpressionFunctionParameter.name property
+
+<b>Signature:</b>
+
+```typescript
+name: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.options.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.options.md
new file mode 100644
index 0000000000000..95369ebd5ce88
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.options.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.md) &gt; [options](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.options.md)
+
+## ExpressionFunctionParameter.options property
+
+<b>Signature:</b>
+
+```typescript
+options: any[];
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.required.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.required.md
new file mode 100644
index 0000000000000..0e58b41e2a22c
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.required.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.md) &gt; [required](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.required.md)
+
+## ExpressionFunctionParameter.required property
+
+<b>Signature:</b>
+
+```typescript
+required: boolean;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.resolve.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.resolve.md
new file mode 100644
index 0000000000000..3415c5f6a7639
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.resolve.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.md) &gt; [resolve](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.resolve.md)
+
+## ExpressionFunctionParameter.resolve property
+
+<b>Signature:</b>
+
+```typescript
+resolve: boolean;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.types.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.types.md
new file mode 100644
index 0000000000000..f7d6079705e8e
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionfunctionparameter.types.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.md) &gt; [types](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.types.md)
+
+## ExpressionFunctionParameter.types property
+
+<b>Signature:</b>
+
+```typescript
+types: string[];
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionimage.dataurl.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionimage.dataurl.md
new file mode 100644
index 0000000000000..a51dc1eaea66f
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionimage.dataurl.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionImage](./kibana-plugin-plugins-expressions-server.expressionimage.md) &gt; [dataurl](./kibana-plugin-plugins-expressions-server.expressionimage.dataurl.md)
+
+## ExpressionImage.dataurl property
+
+<b>Signature:</b>
+
+```typescript
+dataurl: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionimage.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionimage.md
new file mode 100644
index 0000000000000..7f323fba7bfe1
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionimage.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionImage](./kibana-plugin-plugins-expressions-server.expressionimage.md)
+
+## ExpressionImage interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionImage 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [dataurl](./kibana-plugin-plugins-expressions-server.expressionimage.dataurl.md) | <code>string</code> |  |
+|  [mode](./kibana-plugin-plugins-expressions-server.expressionimage.mode.md) | <code>string</code> |  |
+|  [type](./kibana-plugin-plugins-expressions-server.expressionimage.type.md) | <code>'image'</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionimage.mode.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionimage.mode.md
new file mode 100644
index 0000000000000..9aae0ed3ea8b4
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionimage.mode.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionImage](./kibana-plugin-plugins-expressions-server.expressionimage.md) &gt; [mode](./kibana-plugin-plugins-expressions-server.expressionimage.mode.md)
+
+## ExpressionImage.mode property
+
+<b>Signature:</b>
+
+```typescript
+mode: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionimage.type.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionimage.type.md
new file mode 100644
index 0000000000000..0cc0418228281
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionimage.type.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionImage](./kibana-plugin-plugins-expressions-server.expressionimage.md) &gt; [type](./kibana-plugin-plugins-expressions-server.expressionimage.type.md)
+
+## ExpressionImage.type property
+
+<b>Signature:</b>
+
+```typescript
+type: 'image';
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.displayname.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.displayname.md
new file mode 100644
index 0000000000000..e936e25cee6ca
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.displayname.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRenderDefinition](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.md) &gt; [displayName](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.displayname.md)
+
+## ExpressionRenderDefinition.displayName property
+
+A user friendly name of the renderer as will be displayed to user in UI.
+
+<b>Signature:</b>
+
+```typescript
+displayName: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.help.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.help.md
new file mode 100644
index 0000000000000..971abba04fdf9
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.help.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRenderDefinition](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.md) &gt; [help](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.help.md)
+
+## ExpressionRenderDefinition.help property
+
+Help text as will be displayed to user. A sentence or few about what this element does.
+
+<b>Signature:</b>
+
+```typescript
+help?: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.md
new file mode 100644
index 0000000000000..9cefb6ef196cf
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.md
@@ -0,0 +1,23 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRenderDefinition](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.md)
+
+## ExpressionRenderDefinition interface
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionRenderDefinition<Config = unknown> 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [displayName](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.displayname.md) | <code>string</code> | A user friendly name of the renderer as will be displayed to user in UI. |
+|  [help](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.help.md) | <code>string</code> | Help text as will be displayed to user. A sentence or few about what this element does. |
+|  [name](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.name.md) | <code>string</code> | Technical name of the renderer, used as ID to identify renderer in expression renderer registry. This must match the name of the expression function that is used to create the <code>type: render</code> object. |
+|  [render](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.render.md) | <code>(domNode: HTMLElement, config: Config, handlers: IInterpreterRenderHandlers) =&gt; void &#124; Promise&lt;void&gt;</code> | The function called to render the output data of an expression. |
+|  [reuseDomNode](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.reusedomnode.md) | <code>boolean</code> | Tell the renderer if the dom node should be reused, it's recreated each time by default. |
+|  [validate](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.validate.md) | <code>() =&gt; undefined &#124; Error</code> | Used to validate the data before calling the render function. |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.name.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.name.md
new file mode 100644
index 0000000000000..62eec0109c374
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.name.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRenderDefinition](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.md) &gt; [name](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.name.md)
+
+## ExpressionRenderDefinition.name property
+
+Technical name of the renderer, used as ID to identify renderer in expression renderer registry. This must match the name of the expression function that is used to create the `type: render` object.
+
+<b>Signature:</b>
+
+```typescript
+name: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.render.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.render.md
new file mode 100644
index 0000000000000..99698e1828637
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.render.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRenderDefinition](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.md) &gt; [render](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.render.md)
+
+## ExpressionRenderDefinition.render property
+
+The function called to render the output data of an expression.
+
+<b>Signature:</b>
+
+```typescript
+render: (domNode: HTMLElement, config: Config, handlers: IInterpreterRenderHandlers) => void | Promise<void>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.reusedomnode.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.reusedomnode.md
new file mode 100644
index 0000000000000..435920cccc642
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.reusedomnode.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRenderDefinition](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.md) &gt; [reuseDomNode](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.reusedomnode.md)
+
+## ExpressionRenderDefinition.reuseDomNode property
+
+Tell the renderer if the dom node should be reused, it's recreated each time by default.
+
+<b>Signature:</b>
+
+```typescript
+reuseDomNode: boolean;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.validate.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.validate.md
new file mode 100644
index 0000000000000..f640744374eda
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderdefinition.validate.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRenderDefinition](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.md) &gt; [validate](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.validate.md)
+
+## ExpressionRenderDefinition.validate property
+
+Used to validate the data before calling the render function.
+
+<b>Signature:</b>
+
+```typescript
+validate?: () => undefined | Error;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer._constructor_.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer._constructor_.md
new file mode 100644
index 0000000000000..5db39853728af
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer._constructor_.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRenderer](./kibana-plugin-plugins-expressions-server.expressionrenderer.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-server.expressionrenderer._constructor_.md)
+
+## ExpressionRenderer.(constructor)
+
+Constructs a new instance of the `ExpressionRenderer` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(config: ExpressionRenderDefinition<Config>);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  config | <code>ExpressionRenderDefinition&lt;Config&gt;</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.displayname.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.displayname.md
new file mode 100644
index 0000000000000..41846bf41997f
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.displayname.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRenderer](./kibana-plugin-plugins-expressions-server.expressionrenderer.md) &gt; [displayName](./kibana-plugin-plugins-expressions-server.expressionrenderer.displayname.md)
+
+## ExpressionRenderer.displayName property
+
+<b>Signature:</b>
+
+```typescript
+readonly displayName: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.help.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.help.md
new file mode 100644
index 0000000000000..9cf60c832fb95
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.help.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRenderer](./kibana-plugin-plugins-expressions-server.expressionrenderer.md) &gt; [help](./kibana-plugin-plugins-expressions-server.expressionrenderer.help.md)
+
+## ExpressionRenderer.help property
+
+<b>Signature:</b>
+
+```typescript
+readonly help: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.md
new file mode 100644
index 0000000000000..6f5c336a89e5c
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.md
@@ -0,0 +1,29 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRenderer](./kibana-plugin-plugins-expressions-server.expressionrenderer.md)
+
+## ExpressionRenderer class
+
+<b>Signature:</b>
+
+```typescript
+export declare class ExpressionRenderer<Config = unknown> 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(config)](./kibana-plugin-plugins-expressions-server.expressionrenderer._constructor_.md) |  | Constructs a new instance of the <code>ExpressionRenderer</code> class |
+
+## Properties
+
+|  Property | Modifiers | Type | Description |
+|  --- | --- | --- | --- |
+|  [displayName](./kibana-plugin-plugins-expressions-server.expressionrenderer.displayname.md) |  | <code>string</code> |  |
+|  [help](./kibana-plugin-plugins-expressions-server.expressionrenderer.help.md) |  | <code>string</code> |  |
+|  [name](./kibana-plugin-plugins-expressions-server.expressionrenderer.name.md) |  | <code>string</code> |  |
+|  [render](./kibana-plugin-plugins-expressions-server.expressionrenderer.render.md) |  | <code>ExpressionRenderDefinition&lt;Config&gt;['render']</code> |  |
+|  [reuseDomNode](./kibana-plugin-plugins-expressions-server.expressionrenderer.reusedomnode.md) |  | <code>boolean</code> |  |
+|  [validate](./kibana-plugin-plugins-expressions-server.expressionrenderer.validate.md) |  | <code>() =&gt; void &#124; Error</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.name.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.name.md
new file mode 100644
index 0000000000000..f320fcd8408ab
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.name.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRenderer](./kibana-plugin-plugins-expressions-server.expressionrenderer.md) &gt; [name](./kibana-plugin-plugins-expressions-server.expressionrenderer.name.md)
+
+## ExpressionRenderer.name property
+
+<b>Signature:</b>
+
+```typescript
+readonly name: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.render.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.render.md
new file mode 100644
index 0000000000000..d7cf04e6d8bfa
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.render.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRenderer](./kibana-plugin-plugins-expressions-server.expressionrenderer.md) &gt; [render](./kibana-plugin-plugins-expressions-server.expressionrenderer.render.md)
+
+## ExpressionRenderer.render property
+
+<b>Signature:</b>
+
+```typescript
+readonly render: ExpressionRenderDefinition<Config>['render'];
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.reusedomnode.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.reusedomnode.md
new file mode 100644
index 0000000000000..8fd9c5fa8e6ff
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.reusedomnode.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRenderer](./kibana-plugin-plugins-expressions-server.expressionrenderer.md) &gt; [reuseDomNode](./kibana-plugin-plugins-expressions-server.expressionrenderer.reusedomnode.md)
+
+## ExpressionRenderer.reuseDomNode property
+
+<b>Signature:</b>
+
+```typescript
+readonly reuseDomNode: boolean;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.validate.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.validate.md
new file mode 100644
index 0000000000000..d40945cfb88f1
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrenderer.validate.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRenderer](./kibana-plugin-plugins-expressions-server.expressionrenderer.md) &gt; [validate](./kibana-plugin-plugins-expressions-server.expressionrenderer.validate.md)
+
+## ExpressionRenderer.validate property
+
+<b>Signature:</b>
+
+```typescript
+readonly validate: () => void | Error;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrendererregistry.get.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrendererregistry.get.md
new file mode 100644
index 0000000000000..6f8e6c868ac9b
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrendererregistry.get.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRendererRegistry](./kibana-plugin-plugins-expressions-server.expressionrendererregistry.md) &gt; [get](./kibana-plugin-plugins-expressions-server.expressionrendererregistry.get.md)
+
+## ExpressionRendererRegistry.get() method
+
+<b>Signature:</b>
+
+```typescript
+get(id: string): ExpressionRenderer | null;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  id | <code>string</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionRenderer | null`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrendererregistry.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrendererregistry.md
new file mode 100644
index 0000000000000..d4a34ab140854
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrendererregistry.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRendererRegistry](./kibana-plugin-plugins-expressions-server.expressionrendererregistry.md)
+
+## ExpressionRendererRegistry class
+
+<b>Signature:</b>
+
+```typescript
+export declare class ExpressionRendererRegistry implements IRegistry<ExpressionRenderer> 
+```
+
+## Methods
+
+|  Method | Modifiers | Description |
+|  --- | --- | --- |
+|  [get(id)](./kibana-plugin-plugins-expressions-server.expressionrendererregistry.get.md) |  |  |
+|  [register(definition)](./kibana-plugin-plugins-expressions-server.expressionrendererregistry.register.md) |  |  |
+|  [toArray()](./kibana-plugin-plugins-expressions-server.expressionrendererregistry.toarray.md) |  |  |
+|  [toJS()](./kibana-plugin-plugins-expressions-server.expressionrendererregistry.tojs.md) |  |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrendererregistry.register.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrendererregistry.register.md
new file mode 100644
index 0000000000000..d5411a327fbcd
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrendererregistry.register.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRendererRegistry](./kibana-plugin-plugins-expressions-server.expressionrendererregistry.md) &gt; [register](./kibana-plugin-plugins-expressions-server.expressionrendererregistry.register.md)
+
+## ExpressionRendererRegistry.register() method
+
+<b>Signature:</b>
+
+```typescript
+register(definition: AnyExpressionRenderDefinition | (() => AnyExpressionRenderDefinition)): void;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  definition | <code>AnyExpressionRenderDefinition &#124; (() =&gt; AnyExpressionRenderDefinition)</code> |  |
+
+<b>Returns:</b>
+
+`void`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrendererregistry.toarray.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrendererregistry.toarray.md
new file mode 100644
index 0000000000000..edb153000b458
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrendererregistry.toarray.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRendererRegistry](./kibana-plugin-plugins-expressions-server.expressionrendererregistry.md) &gt; [toArray](./kibana-plugin-plugins-expressions-server.expressionrendererregistry.toarray.md)
+
+## ExpressionRendererRegistry.toArray() method
+
+<b>Signature:</b>
+
+```typescript
+toArray(): ExpressionRenderer[];
+```
+<b>Returns:</b>
+
+`ExpressionRenderer[]`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrendererregistry.tojs.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrendererregistry.tojs.md
new file mode 100644
index 0000000000000..f7230e9102c8f
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionrendererregistry.tojs.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionRendererRegistry](./kibana-plugin-plugins-expressions-server.expressionrendererregistry.md) &gt; [toJS](./kibana-plugin-plugins-expressions-server.expressionrendererregistry.tojs.md)
+
+## ExpressionRendererRegistry.toJS() method
+
+<b>Signature:</b>
+
+```typescript
+toJS(): Record<string, ExpressionRenderer>;
+```
+<b>Returns:</b>
+
+`Record<string, ExpressionRenderer>`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverplugin._constructor_.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverplugin._constructor_.md
new file mode 100644
index 0000000000000..639ae379f0ed7
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverplugin._constructor_.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionsServerPlugin](./kibana-plugin-plugins-expressions-server.expressionsserverplugin.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-server.expressionsserverplugin._constructor_.md)
+
+## ExpressionsServerPlugin.(constructor)
+
+Constructs a new instance of the `ExpressionsServerPlugin` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(initializerContext: PluginInitializerContext);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  initializerContext | <code>PluginInitializerContext</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverplugin.expressions.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverplugin.expressions.md
new file mode 100644
index 0000000000000..a391220a6349e
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverplugin.expressions.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionsServerPlugin](./kibana-plugin-plugins-expressions-server.expressionsserverplugin.md) &gt; [expressions](./kibana-plugin-plugins-expressions-server.expressionsserverplugin.expressions.md)
+
+## ExpressionsServerPlugin.expressions property
+
+<b>Signature:</b>
+
+```typescript
+readonly expressions: ExpressionsService;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverplugin.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverplugin.md
new file mode 100644
index 0000000000000..f92d572b1111a
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverplugin.md
@@ -0,0 +1,32 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionsServerPlugin](./kibana-plugin-plugins-expressions-server.expressionsserverplugin.md)
+
+## ExpressionsServerPlugin class
+
+<b>Signature:</b>
+
+```typescript
+export declare class ExpressionsServerPlugin implements Plugin<ExpressionsServerSetup, ExpressionsServerStart> 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(initializerContext)](./kibana-plugin-plugins-expressions-server.expressionsserverplugin._constructor_.md) |  | Constructs a new instance of the <code>ExpressionsServerPlugin</code> class |
+
+## Properties
+
+|  Property | Modifiers | Type | Description |
+|  --- | --- | --- | --- |
+|  [expressions](./kibana-plugin-plugins-expressions-server.expressionsserverplugin.expressions.md) |  | <code>ExpressionsService</code> |  |
+
+## Methods
+
+|  Method | Modifiers | Description |
+|  --- | --- | --- |
+|  [setup(core)](./kibana-plugin-plugins-expressions-server.expressionsserverplugin.setup.md) |  |  |
+|  [start(core)](./kibana-plugin-plugins-expressions-server.expressionsserverplugin.start.md) |  |  |
+|  [stop()](./kibana-plugin-plugins-expressions-server.expressionsserverplugin.stop.md) |  |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverplugin.setup.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverplugin.setup.md
new file mode 100644
index 0000000000000..18e33d4e0bc60
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverplugin.setup.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionsServerPlugin](./kibana-plugin-plugins-expressions-server.expressionsserverplugin.md) &gt; [setup](./kibana-plugin-plugins-expressions-server.expressionsserverplugin.setup.md)
+
+## ExpressionsServerPlugin.setup() method
+
+<b>Signature:</b>
+
+```typescript
+setup(core: CoreSetup): ExpressionsServerSetup;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  core | <code>CoreSetup</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionsServerSetup`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverplugin.start.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverplugin.start.md
new file mode 100644
index 0000000000000..31578685ff386
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverplugin.start.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionsServerPlugin](./kibana-plugin-plugins-expressions-server.expressionsserverplugin.md) &gt; [start](./kibana-plugin-plugins-expressions-server.expressionsserverplugin.start.md)
+
+## ExpressionsServerPlugin.start() method
+
+<b>Signature:</b>
+
+```typescript
+start(core: CoreStart): ExpressionsServerStart;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  core | <code>CoreStart</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionsServerStart`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverplugin.stop.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverplugin.stop.md
new file mode 100644
index 0000000000000..2f6abade901b1
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverplugin.stop.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionsServerPlugin](./kibana-plugin-plugins-expressions-server.expressionsserverplugin.md) &gt; [stop](./kibana-plugin-plugins-expressions-server.expressionsserverplugin.stop.md)
+
+## ExpressionsServerPlugin.stop() method
+
+<b>Signature:</b>
+
+```typescript
+stop(): void;
+```
+<b>Returns:</b>
+
+`void`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserversetup.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserversetup.md
new file mode 100644
index 0000000000000..2cf591a59c4f6
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserversetup.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionsServerSetup](./kibana-plugin-plugins-expressions-server.expressionsserversetup.md)
+
+## ExpressionsServerSetup type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionsServerSetup = ExpressionsServiceSetup;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverstart.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverstart.md
new file mode 100644
index 0000000000000..9ceb261a7f689
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverstart.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionsServerStart](./kibana-plugin-plugins-expressions-server.expressionsserverstart.md)
+
+## ExpressionsServerStart type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionsServerStart = ExpressionsServiceStart;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype._constructor_.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype._constructor_.md
new file mode 100644
index 0000000000000..966955c03ff08
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype._constructor_.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-server.expressiontype.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-server.expressiontype._constructor_.md)
+
+## ExpressionType.(constructor)
+
+Constructs a new instance of the `ExpressionType` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(definition: AnyExpressionTypeDefinition);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  definition | <code>AnyExpressionTypeDefinition</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.castsfrom.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.castsfrom.md
new file mode 100644
index 0000000000000..57758e8fa7788
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.castsfrom.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-server.expressiontype.md) &gt; [castsFrom](./kibana-plugin-plugins-expressions-server.expressiontype.castsfrom.md)
+
+## ExpressionType.castsFrom property
+
+<b>Signature:</b>
+
+```typescript
+castsFrom: (value: ExpressionValue) => boolean;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.caststo.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.caststo.md
new file mode 100644
index 0000000000000..eec17f8606817
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.caststo.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-server.expressiontype.md) &gt; [castsTo](./kibana-plugin-plugins-expressions-server.expressiontype.caststo.md)
+
+## ExpressionType.castsTo property
+
+<b>Signature:</b>
+
+```typescript
+castsTo: (value: ExpressionValue) => boolean;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.create.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.create.md
new file mode 100644
index 0000000000000..3fbd1f7986254
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.create.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-server.expressiontype.md) &gt; [create](./kibana-plugin-plugins-expressions-server.expressiontype.create.md)
+
+## ExpressionType.create property
+
+<b>Signature:</b>
+
+```typescript
+create: unknown;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.deserialize.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.deserialize.md
new file mode 100644
index 0000000000000..232d70b846092
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.deserialize.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-server.expressiontype.md) &gt; [deserialize](./kibana-plugin-plugins-expressions-server.expressiontype.deserialize.md)
+
+## ExpressionType.deserialize property
+
+<b>Signature:</b>
+
+```typescript
+deserialize?: (serialized: any) => ExpressionValue;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.from.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.from.md
new file mode 100644
index 0000000000000..4d24a4162c096
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.from.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-server.expressiontype.md) &gt; [from](./kibana-plugin-plugins-expressions-server.expressiontype.from.md)
+
+## ExpressionType.from property
+
+<b>Signature:</b>
+
+```typescript
+from: (value: ExpressionValue, types: Record<string, ExpressionType>) => any;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.getfromfn.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.getfromfn.md
new file mode 100644
index 0000000000000..092227af92a19
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.getfromfn.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-server.expressiontype.md) &gt; [getFromFn](./kibana-plugin-plugins-expressions-server.expressiontype.getfromfn.md)
+
+## ExpressionType.getFromFn property
+
+<b>Signature:</b>
+
+```typescript
+getFromFn: (typeName: string) => undefined | ExpressionValueConverter<ExpressionValue, ExpressionValue>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.gettofn.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.gettofn.md
new file mode 100644
index 0000000000000..8454116f50ac8
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.gettofn.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-server.expressiontype.md) &gt; [getToFn](./kibana-plugin-plugins-expressions-server.expressiontype.gettofn.md)
+
+## ExpressionType.getToFn property
+
+<b>Signature:</b>
+
+```typescript
+getToFn: (typeName: string) => undefined | ExpressionValueConverter<ExpressionValue, ExpressionValue>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.help.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.help.md
new file mode 100644
index 0000000000000..bd5be7329d6a4
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.help.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-server.expressiontype.md) &gt; [help](./kibana-plugin-plugins-expressions-server.expressiontype.help.md)
+
+## ExpressionType.help property
+
+A short help text.
+
+<b>Signature:</b>
+
+```typescript
+help: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.md
new file mode 100644
index 0000000000000..49f3f504c9419
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.md
@@ -0,0 +1,35 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-server.expressiontype.md)
+
+## ExpressionType class
+
+<b>Signature:</b>
+
+```typescript
+export declare class ExpressionType 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(definition)](./kibana-plugin-plugins-expressions-server.expressiontype._constructor_.md) |  | Constructs a new instance of the <code>ExpressionType</code> class |
+
+## Properties
+
+|  Property | Modifiers | Type | Description |
+|  --- | --- | --- | --- |
+|  [castsFrom](./kibana-plugin-plugins-expressions-server.expressiontype.castsfrom.md) |  | <code>(value: ExpressionValue) =&gt; boolean</code> |  |
+|  [castsTo](./kibana-plugin-plugins-expressions-server.expressiontype.caststo.md) |  | <code>(value: ExpressionValue) =&gt; boolean</code> |  |
+|  [create](./kibana-plugin-plugins-expressions-server.expressiontype.create.md) |  | <code>unknown</code> |  |
+|  [deserialize](./kibana-plugin-plugins-expressions-server.expressiontype.deserialize.md) |  | <code>(serialized: any) =&gt; ExpressionValue</code> |  |
+|  [from](./kibana-plugin-plugins-expressions-server.expressiontype.from.md) |  | <code>(value: ExpressionValue, types: Record&lt;string, ExpressionType&gt;) =&gt; any</code> |  |
+|  [getFromFn](./kibana-plugin-plugins-expressions-server.expressiontype.getfromfn.md) |  | <code>(typeName: string) =&gt; undefined &#124; ExpressionValueConverter&lt;ExpressionValue, ExpressionValue&gt;</code> |  |
+|  [getToFn](./kibana-plugin-plugins-expressions-server.expressiontype.gettofn.md) |  | <code>(typeName: string) =&gt; undefined &#124; ExpressionValueConverter&lt;ExpressionValue, ExpressionValue&gt;</code> |  |
+|  [help](./kibana-plugin-plugins-expressions-server.expressiontype.help.md) |  | <code>string</code> | A short help text. |
+|  [name](./kibana-plugin-plugins-expressions-server.expressiontype.name.md) |  | <code>string</code> |  |
+|  [serialize](./kibana-plugin-plugins-expressions-server.expressiontype.serialize.md) |  | <code>(value: ExpressionValue) =&gt; any</code> | Optional serialization (used when passing context around client/server). |
+|  [to](./kibana-plugin-plugins-expressions-server.expressiontype.to.md) |  | <code>(value: ExpressionValue, toTypeName: string, types: Record&lt;string, ExpressionType&gt;) =&gt; any</code> |  |
+|  [validate](./kibana-plugin-plugins-expressions-server.expressiontype.validate.md) |  | <code>(type: any) =&gt; void &#124; Error</code> | Type validation, useful for checking function output. |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.name.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.name.md
new file mode 100644
index 0000000000000..44e0e18270b14
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.name.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-server.expressiontype.md) &gt; [name](./kibana-plugin-plugins-expressions-server.expressiontype.name.md)
+
+## ExpressionType.name property
+
+<b>Signature:</b>
+
+```typescript
+name: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.serialize.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.serialize.md
new file mode 100644
index 0000000000000..013b95bf2d0ce
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.serialize.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-server.expressiontype.md) &gt; [serialize](./kibana-plugin-plugins-expressions-server.expressiontype.serialize.md)
+
+## ExpressionType.serialize property
+
+Optional serialization (used when passing context around client/server).
+
+<b>Signature:</b>
+
+```typescript
+serialize?: (value: ExpressionValue) => any;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.to.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.to.md
new file mode 100644
index 0000000000000..70e4504324f22
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.to.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-server.expressiontype.md) &gt; [to](./kibana-plugin-plugins-expressions-server.expressiontype.to.md)
+
+## ExpressionType.to property
+
+<b>Signature:</b>
+
+```typescript
+to: (value: ExpressionValue, toTypeName: string, types: Record<string, ExpressionType>) => any;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.validate.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.validate.md
new file mode 100644
index 0000000000000..6e1fd681a732b
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontype.validate.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionType](./kibana-plugin-plugins-expressions-server.expressiontype.md) &gt; [validate](./kibana-plugin-plugins-expressions-server.expressiontype.validate.md)
+
+## ExpressionType.validate property
+
+Type validation, useful for checking function output.
+
+<b>Signature:</b>
+
+```typescript
+validate: (type: any) => void | Error;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.deserialize.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.deserialize.md
new file mode 100644
index 0000000000000..71e9ecd7270d9
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.deserialize.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionTypeDefinition](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.md) &gt; [deserialize](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.deserialize.md)
+
+## ExpressionTypeDefinition.deserialize property
+
+<b>Signature:</b>
+
+```typescript
+deserialize?: (type: SerializedType) => Value;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.from.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.from.md
new file mode 100644
index 0000000000000..f3ad8791c7bac
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.from.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionTypeDefinition](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.md) &gt; [from](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.from.md)
+
+## ExpressionTypeDefinition.from property
+
+<b>Signature:</b>
+
+```typescript
+from?: {
+        [type: string]: ExpressionValueConverter<any, Value>;
+    };
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.help.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.help.md
new file mode 100644
index 0000000000000..f1c4d48599da6
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.help.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionTypeDefinition](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.md) &gt; [help](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.help.md)
+
+## ExpressionTypeDefinition.help property
+
+<b>Signature:</b>
+
+```typescript
+help?: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.md
new file mode 100644
index 0000000000000..5179bd1df7311
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.md
@@ -0,0 +1,26 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionTypeDefinition](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.md)
+
+## ExpressionTypeDefinition interface
+
+A generic type which represents a custom Expression Type Definition that's registered to the Interpreter.
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionTypeDefinition<Name extends string, Value extends ExpressionValueUnboxed | ExpressionValueBoxed, SerializedType = undefined> 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [deserialize](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.deserialize.md) | <code>(type: SerializedType) =&gt; Value</code> |  |
+|  [from](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.from.md) | <code>{</code><br/><code>        [type: string]: ExpressionValueConverter&lt;any, Value&gt;;</code><br/><code>    }</code> |  |
+|  [help](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.help.md) | <code>string</code> |  |
+|  [name](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.name.md) | <code>Name</code> |  |
+|  [serialize](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.serialize.md) | <code>(type: Value) =&gt; SerializedType</code> |  |
+|  [to](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.to.md) | <code>{</code><br/><code>        [type: string]: ExpressionValueConverter&lt;Value, any&gt;;</code><br/><code>    }</code> |  |
+|  [validate](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.validate.md) | <code>(type: any) =&gt; void &#124; Error</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.name.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.name.md
new file mode 100644
index 0000000000000..cfc1cebac16da
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.name.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionTypeDefinition](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.md) &gt; [name](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.name.md)
+
+## ExpressionTypeDefinition.name property
+
+<b>Signature:</b>
+
+```typescript
+name: Name;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.serialize.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.serialize.md
new file mode 100644
index 0000000000000..05ec569f62638
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.serialize.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionTypeDefinition](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.md) &gt; [serialize](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.serialize.md)
+
+## ExpressionTypeDefinition.serialize property
+
+<b>Signature:</b>
+
+```typescript
+serialize?: (type: Value) => SerializedType;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.to.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.to.md
new file mode 100644
index 0000000000000..6c2c22fc902c6
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.to.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionTypeDefinition](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.md) &gt; [to](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.to.md)
+
+## ExpressionTypeDefinition.to property
+
+<b>Signature:</b>
+
+```typescript
+to?: {
+        [type: string]: ExpressionValueConverter<Value, any>;
+    };
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.validate.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.validate.md
new file mode 100644
index 0000000000000..acdcf089fcbe0
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypedefinition.validate.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionTypeDefinition](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.md) &gt; [validate](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.validate.md)
+
+## ExpressionTypeDefinition.validate property
+
+<b>Signature:</b>
+
+```typescript
+validate?: (type: any) => void | Error;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypestyle.css.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypestyle.css.md
new file mode 100644
index 0000000000000..7cb6e9bc8b45d
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypestyle.css.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionTypeStyle](./kibana-plugin-plugins-expressions-server.expressiontypestyle.md) &gt; [css](./kibana-plugin-plugins-expressions-server.expressiontypestyle.css.md)
+
+## ExpressionTypeStyle.css property
+
+<b>Signature:</b>
+
+```typescript
+css: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypestyle.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypestyle.md
new file mode 100644
index 0000000000000..274e9b7b6772c
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypestyle.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionTypeStyle](./kibana-plugin-plugins-expressions-server.expressiontypestyle.md)
+
+## ExpressionTypeStyle interface
+
+An object that represents style information, typically CSS.
+
+<b>Signature:</b>
+
+```typescript
+export interface ExpressionTypeStyle 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [css](./kibana-plugin-plugins-expressions-server.expressiontypestyle.css.md) | <code>string</code> |  |
+|  [spec](./kibana-plugin-plugins-expressions-server.expressiontypestyle.spec.md) | <code>CSSStyle</code> |  |
+|  [type](./kibana-plugin-plugins-expressions-server.expressiontypestyle.type.md) | <code>'style'</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypestyle.spec.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypestyle.spec.md
new file mode 100644
index 0000000000000..95f3edbc2b725
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypestyle.spec.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionTypeStyle](./kibana-plugin-plugins-expressions-server.expressiontypestyle.md) &gt; [spec](./kibana-plugin-plugins-expressions-server.expressiontypestyle.spec.md)
+
+## ExpressionTypeStyle.spec property
+
+<b>Signature:</b>
+
+```typescript
+spec: CSSStyle;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypestyle.type.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypestyle.type.md
new file mode 100644
index 0000000000000..be3b476cb8b53
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressiontypestyle.type.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionTypeStyle](./kibana-plugin-plugins-expressions-server.expressiontypestyle.md) &gt; [type](./kibana-plugin-plugins-expressions-server.expressiontypestyle.type.md)
+
+## ExpressionTypeStyle.type property
+
+<b>Signature:</b>
+
+```typescript
+type: 'style';
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvalue.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvalue.md
new file mode 100644
index 0000000000000..fc9af5fbc6695
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvalue.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionValue](./kibana-plugin-plugins-expressions-server.expressionvalue.md)
+
+## ExpressionValue type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionValue = ExpressionValueUnboxed | ExpressionValueBoxed;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvalueboxed.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvalueboxed.md
new file mode 100644
index 0000000000000..ad84aec0dc6d5
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvalueboxed.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionValueBoxed](./kibana-plugin-plugins-expressions-server.expressionvalueboxed.md)
+
+## ExpressionValueBoxed type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionValueBoxed<Type extends string = string, Value extends object = object> = {
+    type: Type;
+} & Value;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvalueconverter.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvalueconverter.md
new file mode 100644
index 0000000000000..d1b69590141cb
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvalueconverter.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionValueConverter](./kibana-plugin-plugins-expressions-server.expressionvalueconverter.md)
+
+## ExpressionValueConverter type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionValueConverter<I extends ExpressionValue, O extends ExpressionValue> = (input: I, availableTypes: Record<string, any>) => O;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvalueerror.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvalueerror.md
new file mode 100644
index 0000000000000..b90e4360e055a
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvalueerror.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionValueError](./kibana-plugin-plugins-expressions-server.expressionvalueerror.md)
+
+## ExpressionValueError type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionValueError = ExpressionValueBoxed<'error', {
+    error: {
+        message: string;
+        type?: string;
+        name?: string;
+        stack?: string;
+        original?: Error;
+    };
+    info?: unknown;
+}>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvaluefilter.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvaluefilter.md
new file mode 100644
index 0000000000000..fb65bc2550513
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvaluefilter.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionValueFilter](./kibana-plugin-plugins-expressions-server.expressionvaluefilter.md)
+
+## ExpressionValueFilter type
+
+Represents an object that is a Filter.
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionValueFilter = ExpressionValueBoxed<'filter', {
+    filterType?: string;
+    value?: string;
+    column?: string;
+    and: ExpressionValueFilter[];
+    to?: string;
+    from?: string;
+    query?: string | null;
+}>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvaluenum.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvaluenum.md
new file mode 100644
index 0000000000000..b109a23dc7259
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvaluenum.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionValueNum](./kibana-plugin-plugins-expressions-server.expressionvaluenum.md)
+
+## ExpressionValueNum type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionValueNum = ExpressionValueBoxed<'num', {
+    value: number;
+}>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvaluerender.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvaluerender.md
new file mode 100644
index 0000000000000..96958d753a78e
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvaluerender.md
@@ -0,0 +1,16 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionValueRender](./kibana-plugin-plugins-expressions-server.expressionvaluerender.md)
+
+## ExpressionValueRender type
+
+Represents an object that is intended to be rendered.
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionValueRender<T> = ExpressionValueBoxed<typeof name, {
+    as: string;
+    value: T;
+}>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvaluesearchcontext.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvaluesearchcontext.md
new file mode 100644
index 0000000000000..6e38adde3ba91
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvaluesearchcontext.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionValueSearchContext](./kibana-plugin-plugins-expressions-server.expressionvaluesearchcontext.md)
+
+## ExpressionValueSearchContext type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionValueSearchContext = ExpressionValueBoxed<'kibana_context', ExecutionContextSearch>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvalueunboxed.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvalueunboxed.md
new file mode 100644
index 0000000000000..2393b2bb70e6b
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionvalueunboxed.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [ExpressionValueUnboxed](./kibana-plugin-plugins-expressions-server.expressionvalueunboxed.md)
+
+## ExpressionValueUnboxed type
+
+<b>Signature:</b>
+
+```typescript
+export declare type ExpressionValueUnboxed = any;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.font.label.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.font.label.md
new file mode 100644
index 0000000000000..5f11f866be2f6
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.font.label.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Font](./kibana-plugin-plugins-expressions-server.font.md) &gt; [label](./kibana-plugin-plugins-expressions-server.font.label.md)
+
+## Font.label property
+
+<b>Signature:</b>
+
+```typescript
+label: FontLabel;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.font.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.font.md
new file mode 100644
index 0000000000000..f3ff25e034624
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.font.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Font](./kibana-plugin-plugins-expressions-server.font.md)
+
+## Font interface
+
+An interface representing a font in Canvas, with a textual label and the CSS `font-value`<!-- -->.
+
+<b>Signature:</b>
+
+```typescript
+export interface Font 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [label](./kibana-plugin-plugins-expressions-server.font.label.md) | <code>FontLabel</code> |  |
+|  [value](./kibana-plugin-plugins-expressions-server.font.value.md) | <code>FontValue</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.font.value.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.font.value.md
new file mode 100644
index 0000000000000..1bb1fac163661
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.font.value.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Font](./kibana-plugin-plugins-expressions-server.font.md) &gt; [value](./kibana-plugin-plugins-expressions-server.font.value.md)
+
+## Font.value property
+
+<b>Signature:</b>
+
+```typescript
+value: FontValue;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.fontlabel.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.fontlabel.md
new file mode 100644
index 0000000000000..4837abb7542fa
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.fontlabel.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [FontLabel](./kibana-plugin-plugins-expressions-server.fontlabel.md)
+
+## FontLabel type
+
+This type contains a unions of all supported font labels, or the the name of the font the user would see in a UI.
+
+<b>Signature:</b>
+
+```typescript
+export declare type FontLabel = typeof fonts[number]['label'];
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.fontstyle.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.fontstyle.md
new file mode 100644
index 0000000000000..26588096666df
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.fontstyle.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [FontStyle](./kibana-plugin-plugins-expressions-server.fontstyle.md)
+
+## FontStyle enum
+
+Enum of supported CSS `font-style` properties.
+
+<b>Signature:</b>
+
+```typescript
+export declare enum FontStyle 
+```
+
+## Enumeration Members
+
+|  Member | Value | Description |
+|  --- | --- | --- |
+|  ITALIC | <code>&quot;italic&quot;</code> |  |
+|  NORMAL | <code>&quot;normal&quot;</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.fontvalue.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.fontvalue.md
new file mode 100644
index 0000000000000..6c0332067a369
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.fontvalue.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [FontValue](./kibana-plugin-plugins-expressions-server.fontvalue.md)
+
+## FontValue type
+
+This type contains a union of all supported font values, equivalent to the CSS `font-value` property.
+
+<b>Signature:</b>
+
+```typescript
+export declare type FontValue = typeof fonts[number]['value'];
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.fontweight.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.fontweight.md
new file mode 100644
index 0000000000000..314e4b17df01e
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.fontweight.md
@@ -0,0 +1,32 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [FontWeight](./kibana-plugin-plugins-expressions-server.fontweight.md)
+
+## FontWeight enum
+
+Enum of supported CSS `font-weight` properties.
+
+<b>Signature:</b>
+
+```typescript
+export declare enum FontWeight 
+```
+
+## Enumeration Members
+
+|  Member | Value | Description |
+|  --- | --- | --- |
+|  BOLD | <code>&quot;bold&quot;</code> |  |
+|  BOLDER | <code>&quot;bolder&quot;</code> |  |
+|  EIGHT | <code>&quot;800&quot;</code> |  |
+|  FIVE | <code>&quot;500&quot;</code> |  |
+|  FOUR | <code>&quot;400&quot;</code> |  |
+|  LIGHTER | <code>&quot;lighter&quot;</code> |  |
+|  NINE | <code>&quot;900&quot;</code> |  |
+|  NORMAL | <code>&quot;normal&quot;</code> |  |
+|  ONE | <code>&quot;100&quot;</code> |  |
+|  SEVEN | <code>&quot;700&quot;</code> |  |
+|  SIX | <code>&quot;600&quot;</code> |  |
+|  THREE | <code>&quot;300&quot;</code> |  |
+|  TWO | <code>&quot;200&quot;</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.format.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.format.md
new file mode 100644
index 0000000000000..aae8498bce03f
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.format.md
@@ -0,0 +1,23 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [format](./kibana-plugin-plugins-expressions-server.format.md)
+
+## format() function
+
+<b>Signature:</b>
+
+```typescript
+export declare function format<T extends ExpressionAstExpression | ExpressionAstArgument>(ast: T, type: T extends ExpressionAstExpression ? 'expression' : 'argument'): string;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  ast | <code>T</code> |  |
+|  type | <code>T extends ExpressionAstExpression ? 'expression' : 'argument'</code> |  |
+
+<b>Returns:</b>
+
+`string`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.formatexpression.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.formatexpression.md
new file mode 100644
index 0000000000000..701d7b448f69f
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.formatexpression.md
@@ -0,0 +1,24 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [formatExpression](./kibana-plugin-plugins-expressions-server.formatexpression.md)
+
+## formatExpression() function
+
+Given expression pipeline AST, returns formatted string.
+
+<b>Signature:</b>
+
+```typescript
+export declare function formatExpression(ast: ExpressionAstExpression): string;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  ast | <code>ExpressionAstExpression</code> |  |
+
+<b>Returns:</b>
+
+`string`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.functionsregistry._constructor_.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.functionsregistry._constructor_.md
new file mode 100644
index 0000000000000..c3dc8b8e9b16f
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.functionsregistry._constructor_.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [FunctionsRegistry](./kibana-plugin-plugins-expressions-server.functionsregistry.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-server.functionsregistry._constructor_.md)
+
+## FunctionsRegistry.(constructor)
+
+Constructs a new instance of the `FunctionsRegistry` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(executor: Executor<any>);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  executor | <code>Executor&lt;any&gt;</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.functionsregistry.get.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.functionsregistry.get.md
new file mode 100644
index 0000000000000..795b3a87eac09
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.functionsregistry.get.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [FunctionsRegistry](./kibana-plugin-plugins-expressions-server.functionsregistry.md) &gt; [get](./kibana-plugin-plugins-expressions-server.functionsregistry.get.md)
+
+## FunctionsRegistry.get() method
+
+<b>Signature:</b>
+
+```typescript
+get(id: string): ExpressionFunction | null;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  id | <code>string</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionFunction | null`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.functionsregistry.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.functionsregistry.md
new file mode 100644
index 0000000000000..790105c68241a
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.functionsregistry.md
@@ -0,0 +1,27 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [FunctionsRegistry](./kibana-plugin-plugins-expressions-server.functionsregistry.md)
+
+## FunctionsRegistry class
+
+<b>Signature:</b>
+
+```typescript
+export declare class FunctionsRegistry implements IRegistry<ExpressionFunction> 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(executor)](./kibana-plugin-plugins-expressions-server.functionsregistry._constructor_.md) |  | Constructs a new instance of the <code>FunctionsRegistry</code> class |
+
+## Methods
+
+|  Method | Modifiers | Description |
+|  --- | --- | --- |
+|  [get(id)](./kibana-plugin-plugins-expressions-server.functionsregistry.get.md) |  |  |
+|  [register(functionDefinition)](./kibana-plugin-plugins-expressions-server.functionsregistry.register.md) |  |  |
+|  [toArray()](./kibana-plugin-plugins-expressions-server.functionsregistry.toarray.md) |  |  |
+|  [toJS()](./kibana-plugin-plugins-expressions-server.functionsregistry.tojs.md) |  |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.functionsregistry.register.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.functionsregistry.register.md
new file mode 100644
index 0000000000000..7da47937e80f0
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.functionsregistry.register.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [FunctionsRegistry](./kibana-plugin-plugins-expressions-server.functionsregistry.md) &gt; [register](./kibana-plugin-plugins-expressions-server.functionsregistry.register.md)
+
+## FunctionsRegistry.register() method
+
+<b>Signature:</b>
+
+```typescript
+register(functionDefinition: AnyExpressionFunctionDefinition | (() => AnyExpressionFunctionDefinition)): void;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  functionDefinition | <code>AnyExpressionFunctionDefinition &#124; (() =&gt; AnyExpressionFunctionDefinition)</code> |  |
+
+<b>Returns:</b>
+
+`void`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.functionsregistry.toarray.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.functionsregistry.toarray.md
new file mode 100644
index 0000000000000..5f9ca38990076
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.functionsregistry.toarray.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [FunctionsRegistry](./kibana-plugin-plugins-expressions-server.functionsregistry.md) &gt; [toArray](./kibana-plugin-plugins-expressions-server.functionsregistry.toarray.md)
+
+## FunctionsRegistry.toArray() method
+
+<b>Signature:</b>
+
+```typescript
+toArray(): ExpressionFunction[];
+```
+<b>Returns:</b>
+
+`ExpressionFunction[]`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.functionsregistry.tojs.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.functionsregistry.tojs.md
new file mode 100644
index 0000000000000..35751bb534e58
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.functionsregistry.tojs.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [FunctionsRegistry](./kibana-plugin-plugins-expressions-server.functionsregistry.md) &gt; [toJS](./kibana-plugin-plugins-expressions-server.functionsregistry.tojs.md)
+
+## FunctionsRegistry.toJS() method
+
+<b>Signature:</b>
+
+```typescript
+toJS(): Record<string, ExpressionFunction>;
+```
+<b>Returns:</b>
+
+`Record<string, ExpressionFunction>`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.done.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.done.md
new file mode 100644
index 0000000000000..c6204769e893c
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.done.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [IInterpreterRenderHandlers](./kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.md) &gt; [done](./kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.done.md)
+
+## IInterpreterRenderHandlers.done property
+
+Done increments the number of rendering successes
+
+<b>Signature:</b>
+
+```typescript
+done: () => void;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.event.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.event.md
new file mode 100644
index 0000000000000..6a011aaf7f132
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.event.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [IInterpreterRenderHandlers](./kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.md) &gt; [event](./kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.event.md)
+
+## IInterpreterRenderHandlers.event property
+
+<b>Signature:</b>
+
+```typescript
+event: (event: any) => void;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.md
new file mode 100644
index 0000000000000..cbaffa04bae8f
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [IInterpreterRenderHandlers](./kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.md)
+
+## IInterpreterRenderHandlers interface
+
+<b>Signature:</b>
+
+```typescript
+export interface IInterpreterRenderHandlers 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [done](./kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.done.md) | <code>() =&gt; void</code> | Done increments the number of rendering successes |
+|  [event](./kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.event.md) | <code>(event: any) =&gt; void</code> |  |
+|  [onDestroy](./kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.ondestroy.md) | <code>(fn: () =&gt; void) =&gt; void</code> |  |
+|  [reload](./kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.reload.md) | <code>() =&gt; void</code> |  |
+|  [update](./kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.update.md) | <code>(params: any) =&gt; void</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.ondestroy.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.ondestroy.md
new file mode 100644
index 0000000000000..14ef98d17769c
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.ondestroy.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [IInterpreterRenderHandlers](./kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.md) &gt; [onDestroy](./kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.ondestroy.md)
+
+## IInterpreterRenderHandlers.onDestroy property
+
+<b>Signature:</b>
+
+```typescript
+onDestroy: (fn: () => void) => void;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.reload.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.reload.md
new file mode 100644
index 0000000000000..c5e74e79f652b
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.reload.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [IInterpreterRenderHandlers](./kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.md) &gt; [reload](./kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.reload.md)
+
+## IInterpreterRenderHandlers.reload property
+
+<b>Signature:</b>
+
+```typescript
+reload: () => void;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.update.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.update.md
new file mode 100644
index 0000000000000..2649ea99b3386
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.update.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [IInterpreterRenderHandlers](./kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.md) &gt; [update](./kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.update.md)
+
+## IInterpreterRenderHandlers.update property
+
+<b>Signature:</b>
+
+```typescript
+update: (params: any) => void;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.interpretererrortype.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.interpretererrortype.md
new file mode 100644
index 0000000000000..032cea643c5bf
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.interpretererrortype.md
@@ -0,0 +1,16 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [InterpreterErrorType](./kibana-plugin-plugins-expressions-server.interpretererrortype.md)
+
+## InterpreterErrorType type
+
+> Warning: This API is now obsolete.
+> 
+> Exported for backwards compatibility.
+> 
+
+<b>Signature:</b>
+
+```typescript
+export declare type InterpreterErrorType = ExpressionValueError;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iregistry.get.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iregistry.get.md
new file mode 100644
index 0000000000000..b0b4524afe40a
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iregistry.get.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [IRegistry](./kibana-plugin-plugins-expressions-server.iregistry.md) &gt; [get](./kibana-plugin-plugins-expressions-server.iregistry.get.md)
+
+## IRegistry.get() method
+
+<b>Signature:</b>
+
+```typescript
+get(id: string): T | null;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  id | <code>string</code> |  |
+
+<b>Returns:</b>
+
+`T | null`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iregistry.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iregistry.md
new file mode 100644
index 0000000000000..71aafe2db2dd1
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iregistry.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [IRegistry](./kibana-plugin-plugins-expressions-server.iregistry.md)
+
+## IRegistry interface
+
+<b>Signature:</b>
+
+```typescript
+export interface IRegistry<T> 
+```
+
+## Methods
+
+|  Method | Description |
+|  --- | --- |
+|  [get(id)](./kibana-plugin-plugins-expressions-server.iregistry.get.md) |  |
+|  [toArray()](./kibana-plugin-plugins-expressions-server.iregistry.toarray.md) |  |
+|  [toJS()](./kibana-plugin-plugins-expressions-server.iregistry.tojs.md) |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iregistry.toarray.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iregistry.toarray.md
new file mode 100644
index 0000000000000..73718cd036c85
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iregistry.toarray.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [IRegistry](./kibana-plugin-plugins-expressions-server.iregistry.md) &gt; [toArray](./kibana-plugin-plugins-expressions-server.iregistry.toarray.md)
+
+## IRegistry.toArray() method
+
+<b>Signature:</b>
+
+```typescript
+toArray(): T[];
+```
+<b>Returns:</b>
+
+`T[]`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iregistry.tojs.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iregistry.tojs.md
new file mode 100644
index 0000000000000..af83efbd99aa7
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.iregistry.tojs.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [IRegistry](./kibana-plugin-plugins-expressions-server.iregistry.md) &gt; [toJS](./kibana-plugin-plugins-expressions-server.iregistry.tojs.md)
+
+## IRegistry.toJS() method
+
+<b>Signature:</b>
+
+```typescript
+toJS(): Record<string, T>;
+```
+<b>Returns:</b>
+
+`Record<string, T>`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.isexpressionastbuilder.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.isexpressionastbuilder.md
new file mode 100644
index 0000000000000..7692ff21ae934
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.isexpressionastbuilder.md
@@ -0,0 +1,28 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [isExpressionAstBuilder](./kibana-plugin-plugins-expressions-server.isexpressionastbuilder.md)
+
+## isExpressionAstBuilder() function
+
+Type guard that checks whether a given value is an `ExpressionAstExpressionBuilder`<!-- -->. This is useful when working with subexpressions, where you might be retrieving a function argument, and need to know whether it is an expression builder instance which you can perform operations on.
+
+<b>Signature:</b>
+
+```typescript
+export declare function isExpressionAstBuilder(val: any): val is ExpressionAstExpressionBuilder;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  val | <code>any</code> |  |
+
+<b>Returns:</b>
+
+`val is ExpressionAstExpressionBuilder`
+
+## Example
+
+const arg = myFunction.getArgument('foo'); if (isExpressionAstBuilder(foo)) { foo.toAst(); }
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibana_context_name.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibana_context_name.md
new file mode 100644
index 0000000000000..bd47c52e0d5ce
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibana_context_name.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [KIBANA\_CONTEXT\_NAME](./kibana-plugin-plugins-expressions-server.kibana_context_name.md)
+
+## KIBANA\_CONTEXT\_NAME type
+
+<b>Signature:</b>
+
+```typescript
+export declare type KIBANA_CONTEXT_NAME = 'kibana_context';
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanacontext.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanacontext.md
new file mode 100644
index 0000000000000..023748173e7dd
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanacontext.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [KibanaContext](./kibana-plugin-plugins-expressions-server.kibanacontext.md)
+
+## KibanaContext type
+
+<b>Signature:</b>
+
+```typescript
+export declare type KibanaContext = ExpressionValueSearchContext;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatable.columns.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatable.columns.md
new file mode 100644
index 0000000000000..423e543e4307a
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatable.columns.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [KibanaDatatable](./kibana-plugin-plugins-expressions-server.kibanadatatable.md) &gt; [columns](./kibana-plugin-plugins-expressions-server.kibanadatatable.columns.md)
+
+## KibanaDatatable.columns property
+
+<b>Signature:</b>
+
+```typescript
+columns: KibanaDatatableColumn[];
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatable.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatable.md
new file mode 100644
index 0000000000000..30ee3ac2fcd13
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatable.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [KibanaDatatable](./kibana-plugin-plugins-expressions-server.kibanadatatable.md)
+
+## KibanaDatatable interface
+
+<b>Signature:</b>
+
+```typescript
+export interface KibanaDatatable 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [columns](./kibana-plugin-plugins-expressions-server.kibanadatatable.columns.md) | <code>KibanaDatatableColumn[]</code> |  |
+|  [rows](./kibana-plugin-plugins-expressions-server.kibanadatatable.rows.md) | <code>KibanaDatatableRow[]</code> |  |
+|  [type](./kibana-plugin-plugins-expressions-server.kibanadatatable.type.md) | <code>typeof name</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatable.rows.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatable.rows.md
new file mode 100644
index 0000000000000..42170a83fc3c8
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatable.rows.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [KibanaDatatable](./kibana-plugin-plugins-expressions-server.kibanadatatable.md) &gt; [rows](./kibana-plugin-plugins-expressions-server.kibanadatatable.rows.md)
+
+## KibanaDatatable.rows property
+
+<b>Signature:</b>
+
+```typescript
+rows: KibanaDatatableRow[];
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatable.type.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatable.type.md
new file mode 100644
index 0000000000000..c36674540a1ba
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatable.type.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [KibanaDatatable](./kibana-plugin-plugins-expressions-server.kibanadatatable.md) &gt; [type](./kibana-plugin-plugins-expressions-server.kibanadatatable.type.md)
+
+## KibanaDatatable.type property
+
+<b>Signature:</b>
+
+```typescript
+type: typeof name;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.formathint.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.formathint.md
new file mode 100644
index 0000000000000..a1e6949019dcb
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.formathint.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [KibanaDatatableColumn](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.md) &gt; [formatHint](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.formathint.md)
+
+## KibanaDatatableColumn.formatHint property
+
+<b>Signature:</b>
+
+```typescript
+formatHint?: SerializedFieldFormat;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.id.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.id.md
new file mode 100644
index 0000000000000..6f90da1ac9c94
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.id.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [KibanaDatatableColumn](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.md) &gt; [id](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.id.md)
+
+## KibanaDatatableColumn.id property
+
+<b>Signature:</b>
+
+```typescript
+id: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.md
new file mode 100644
index 0000000000000..171477911502f
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [KibanaDatatableColumn](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.md)
+
+## KibanaDatatableColumn interface
+
+<b>Signature:</b>
+
+```typescript
+export interface KibanaDatatableColumn 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [formatHint](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.formathint.md) | <code>SerializedFieldFormat</code> |  |
+|  [id](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.id.md) | <code>string</code> |  |
+|  [meta](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.meta.md) | <code>KibanaDatatableColumnMeta</code> |  |
+|  [name](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.name.md) | <code>string</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.meta.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.meta.md
new file mode 100644
index 0000000000000..40b20d51e6ec6
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.meta.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [KibanaDatatableColumn](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.md) &gt; [meta](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.meta.md)
+
+## KibanaDatatableColumn.meta property
+
+<b>Signature:</b>
+
+```typescript
+meta?: KibanaDatatableColumnMeta;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.name.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.name.md
new file mode 100644
index 0000000000000..3a85e2325483a
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.name.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [KibanaDatatableColumn](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.md) &gt; [name](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.name.md)
+
+## KibanaDatatableColumn.name property
+
+<b>Signature:</b>
+
+```typescript
+name: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.aggconfigparams.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.aggconfigparams.md
new file mode 100644
index 0000000000000..539b24174f725
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.aggconfigparams.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [KibanaDatatableColumnMeta](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.md) &gt; [aggConfigParams](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.aggconfigparams.md)
+
+## KibanaDatatableColumnMeta.aggConfigParams property
+
+<b>Signature:</b>
+
+```typescript
+aggConfigParams?: Record<string, any>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.indexpatternid.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.indexpatternid.md
new file mode 100644
index 0000000000000..2704915a15071
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.indexpatternid.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [KibanaDatatableColumnMeta](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.md) &gt; [indexPatternId](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.indexpatternid.md)
+
+## KibanaDatatableColumnMeta.indexPatternId property
+
+<b>Signature:</b>
+
+```typescript
+indexPatternId?: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.md
new file mode 100644
index 0000000000000..d9a96e665f010
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [KibanaDatatableColumnMeta](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.md)
+
+## KibanaDatatableColumnMeta interface
+
+<b>Signature:</b>
+
+```typescript
+export interface KibanaDatatableColumnMeta 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [aggConfigParams](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.aggconfigparams.md) | <code>Record&lt;string, any&gt;</code> |  |
+|  [indexPatternId](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.indexpatternid.md) | <code>string</code> |  |
+|  [type](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.type.md) | <code>string</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.type.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.type.md
new file mode 100644
index 0000000000000..56e3757ef621a
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.type.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [KibanaDatatableColumnMeta](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.md) &gt; [type](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.type.md)
+
+## KibanaDatatableColumnMeta.type property
+
+<b>Signature:</b>
+
+```typescript
+type: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablerow.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablerow.md
new file mode 100644
index 0000000000000..dd0f3f4cb2f60
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.kibanadatatablerow.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [KibanaDatatableRow](./kibana-plugin-plugins-expressions-server.kibanadatatablerow.md)
+
+## KibanaDatatableRow interface
+
+<b>Signature:</b>
+
+```typescript
+export interface KibanaDatatableRow 
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.knowntypetostring.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.knowntypetostring.md
new file mode 100644
index 0000000000000..ed536ac3b7173
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.knowntypetostring.md
@@ -0,0 +1,17 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [KnownTypeToString](./kibana-plugin-plugins-expressions-server.knowntypetostring.md)
+
+## KnownTypeToString type
+
+Map the type of the generic to a string-based representation of the type.
+
+If the provided generic is its own type interface, we use the value of the `type` key as a string literal type for it.
+
+<b>Signature:</b>
+
+```typescript
+export declare type KnownTypeToString<T> = T extends string ? 'string' : T extends boolean ? 'boolean' : T extends number ? 'number' : T extends null ? 'null' : T extends {
+    type: string;
+} ? T['type'] : never;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.md
new file mode 100644
index 0000000000000..c9fed2e00c66c
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.md
@@ -0,0 +1,116 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md)
+
+## kibana-plugin-plugins-expressions-server package
+
+## Classes
+
+|  Class | Description |
+|  --- | --- |
+|  [Execution](./kibana-plugin-plugins-expressions-server.execution.md) |  |
+|  [Executor](./kibana-plugin-plugins-expressions-server.executor.md) |  |
+|  [ExpressionFunction](./kibana-plugin-plugins-expressions-server.expressionfunction.md) |  |
+|  [ExpressionFunctionParameter](./kibana-plugin-plugins-expressions-server.expressionfunctionparameter.md) |  |
+|  [ExpressionRenderer](./kibana-plugin-plugins-expressions-server.expressionrenderer.md) |  |
+|  [ExpressionRendererRegistry](./kibana-plugin-plugins-expressions-server.expressionrendererregistry.md) |  |
+|  [ExpressionsServerPlugin](./kibana-plugin-plugins-expressions-server.expressionsserverplugin.md) |  |
+|  [ExpressionType](./kibana-plugin-plugins-expressions-server.expressiontype.md) |  |
+|  [FunctionsRegistry](./kibana-plugin-plugins-expressions-server.functionsregistry.md) |  |
+|  [TypesRegistry](./kibana-plugin-plugins-expressions-server.typesregistry.md) |  |
+
+## Enumerations
+
+|  Enumeration | Description |
+|  --- | --- |
+|  [FontStyle](./kibana-plugin-plugins-expressions-server.fontstyle.md) | Enum of supported CSS <code>font-style</code> properties. |
+|  [FontWeight](./kibana-plugin-plugins-expressions-server.fontweight.md) | Enum of supported CSS <code>font-weight</code> properties. |
+|  [Overflow](./kibana-plugin-plugins-expressions-server.overflow.md) | Enum of supported CSS <code>overflow</code> properties. |
+|  [TextAlignment](./kibana-plugin-plugins-expressions-server.textalignment.md) | Enum of supported CSS <code>text-align</code> properties. |
+|  [TextDecoration](./kibana-plugin-plugins-expressions-server.textdecoration.md) | Enum of supported CSS <code>text-decoration</code> properties. |
+
+## Functions
+
+|  Function | Description |
+|  --- | --- |
+|  [buildExpression(initialState)](./kibana-plugin-plugins-expressions-server.buildexpression.md) | Makes it easy to progressively build, update, and traverse an expression AST. You can either start with an empty AST, or provide an expression string, AST, or array of expression function builders to use as initial state. |
+|  [buildExpressionFunction(fnName, initialArgs)](./kibana-plugin-plugins-expressions-server.buildexpressionfunction.md) | Manages an AST for a single expression function. The return value can be provided to <code>buildExpression</code> to add this function to an expression.<!-- -->Note that to preserve type safety and ensure no args are missing, all required arguments for the specified function must be provided up front. If desired, they can be changed or removed later. |
+|  [format(ast, type)](./kibana-plugin-plugins-expressions-server.format.md) |  |
+|  [formatExpression(ast)](./kibana-plugin-plugins-expressions-server.formatexpression.md) | Given expression pipeline AST, returns formatted string. |
+|  [isExpressionAstBuilder(val)](./kibana-plugin-plugins-expressions-server.isexpressionastbuilder.md) | Type guard that checks whether a given value is an <code>ExpressionAstExpressionBuilder</code>. This is useful when working with subexpressions, where you might be retrieving a function argument, and need to know whether it is an expression builder instance which you can perform operations on. |
+|  [parse(expression, startRule)](./kibana-plugin-plugins-expressions-server.parse.md) |  |
+|  [parseExpression(expression)](./kibana-plugin-plugins-expressions-server.parseexpression.md) | Given expression pipeline string, returns parsed AST. |
+|  [plugin(initializerContext)](./kibana-plugin-plugins-expressions-server.plugin.md) |  |
+
+## Interfaces
+
+|  Interface | Description |
+|  --- | --- |
+|  [Datatable](./kibana-plugin-plugins-expressions-server.datatable.md) | A <code>Datatable</code> in Canvas is a unique structure that represents tabulated data. |
+|  [DatatableColumn](./kibana-plugin-plugins-expressions-server.datatablecolumn.md) | This type represents the shape of a column in a <code>Datatable</code>. |
+|  [ExecutionContext](./kibana-plugin-plugins-expressions-server.executioncontext.md) | <code>ExecutionContext</code> is an object available to all functions during a single execution; it provides various methods to perform side-effects. |
+|  [ExecutionParams](./kibana-plugin-plugins-expressions-server.executionparams.md) |  |
+|  [ExecutionState](./kibana-plugin-plugins-expressions-server.executionstate.md) |  |
+|  [ExecutorState](./kibana-plugin-plugins-expressions-server.executorstate.md) |  |
+|  [ExpressionAstExpression](./kibana-plugin-plugins-expressions-server.expressionastexpression.md) |  |
+|  [ExpressionAstExpressionBuilder](./kibana-plugin-plugins-expressions-server.expressionastexpressionbuilder.md) |  |
+|  [ExpressionAstFunction](./kibana-plugin-plugins-expressions-server.expressionastfunction.md) |  |
+|  [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.md) |  |
+|  [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinition.md) | <code>ExpressionFunctionDefinition</code> is the interface plugins have to implement to register a function in <code>expressions</code> plugin. |
+|  [ExpressionFunctionDefinitions](./kibana-plugin-plugins-expressions-server.expressionfunctiondefinitions.md) | A mapping of <code>ExpressionFunctionDefinition</code>s for functions which the Expressions services provides out-of-the-box. Any new functions registered by the Expressions plugin should have their types added here. |
+|  [ExpressionImage](./kibana-plugin-plugins-expressions-server.expressionimage.md) |  |
+|  [ExpressionRenderDefinition](./kibana-plugin-plugins-expressions-server.expressionrenderdefinition.md) |  |
+|  [ExpressionTypeDefinition](./kibana-plugin-plugins-expressions-server.expressiontypedefinition.md) | A generic type which represents a custom Expression Type Definition that's registered to the Interpreter. |
+|  [ExpressionTypeStyle](./kibana-plugin-plugins-expressions-server.expressiontypestyle.md) | An object that represents style information, typically CSS. |
+|  [Font](./kibana-plugin-plugins-expressions-server.font.md) | An interface representing a font in Canvas, with a textual label and the CSS <code>font-value</code>. |
+|  [IInterpreterRenderHandlers](./kibana-plugin-plugins-expressions-server.iinterpreterrenderhandlers.md) |  |
+|  [IRegistry](./kibana-plugin-plugins-expressions-server.iregistry.md) |  |
+|  [KibanaDatatable](./kibana-plugin-plugins-expressions-server.kibanadatatable.md) |  |
+|  [KibanaDatatableColumn](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumn.md) |  |
+|  [KibanaDatatableColumnMeta](./kibana-plugin-plugins-expressions-server.kibanadatatablecolumnmeta.md) |  |
+|  [KibanaDatatableRow](./kibana-plugin-plugins-expressions-server.kibanadatatablerow.md) |  |
+|  [PointSeriesColumn](./kibana-plugin-plugins-expressions-server.pointseriescolumn.md) | Column in a PointSeries |
+|  [Range](./kibana-plugin-plugins-expressions-server.range.md) |  |
+|  [SerializedDatatable](./kibana-plugin-plugins-expressions-server.serializeddatatable.md) |  |
+|  [SerializedFieldFormat](./kibana-plugin-plugins-expressions-server.serializedfieldformat.md) | JSON representation of a field formatter configuration. Is used to carry information about how to format data in a data table as part of the column definition. |
+
+## Type Aliases
+
+|  Type Alias | Description |
+|  --- | --- |
+|  [AnyExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-server.anyexpressionfunctiondefinition.md) | Type to capture every possible expression function definition. |
+|  [AnyExpressionTypeDefinition](./kibana-plugin-plugins-expressions-server.anyexpressiontypedefinition.md) |  |
+|  [ArgumentType](./kibana-plugin-plugins-expressions-server.argumenttype.md) | This type represents all of the possible combinations of properties of an Argument in an Expression Function. The presence or absence of certain fields influence the shape and presence of others within each <code>arg</code> in the specification. |
+|  [DatatableColumnType](./kibana-plugin-plugins-expressions-server.datatablecolumntype.md) | This type represents the <code>type</code> of any <code>DatatableColumn</code> in a <code>Datatable</code>. |
+|  [DatatableRow](./kibana-plugin-plugins-expressions-server.datatablerow.md) | This type represents a row in a <code>Datatable</code>. |
+|  [ExecutionContainer](./kibana-plugin-plugins-expressions-server.executioncontainer.md) |  |
+|  [ExecutorContainer](./kibana-plugin-plugins-expressions-server.executorcontainer.md) |  |
+|  [ExpressionAstArgument](./kibana-plugin-plugins-expressions-server.expressionastargument.md) |  |
+|  [ExpressionAstNode](./kibana-plugin-plugins-expressions-server.expressionastnode.md) |  |
+|  [ExpressionFunctionKibana](./kibana-plugin-plugins-expressions-server.expressionfunctionkibana.md) |  |
+|  [ExpressionsServerSetup](./kibana-plugin-plugins-expressions-server.expressionsserversetup.md) |  |
+|  [ExpressionsServerStart](./kibana-plugin-plugins-expressions-server.expressionsserverstart.md) |  |
+|  [ExpressionValue](./kibana-plugin-plugins-expressions-server.expressionvalue.md) |  |
+|  [ExpressionValueBoxed](./kibana-plugin-plugins-expressions-server.expressionvalueboxed.md) |  |
+|  [ExpressionValueConverter](./kibana-plugin-plugins-expressions-server.expressionvalueconverter.md) |  |
+|  [ExpressionValueError](./kibana-plugin-plugins-expressions-server.expressionvalueerror.md) |  |
+|  [ExpressionValueFilter](./kibana-plugin-plugins-expressions-server.expressionvaluefilter.md) | Represents an object that is a Filter. |
+|  [ExpressionValueNum](./kibana-plugin-plugins-expressions-server.expressionvaluenum.md) |  |
+|  [ExpressionValueRender](./kibana-plugin-plugins-expressions-server.expressionvaluerender.md) | Represents an object that is intended to be rendered. |
+|  [ExpressionValueSearchContext](./kibana-plugin-plugins-expressions-server.expressionvaluesearchcontext.md) |  |
+|  [ExpressionValueUnboxed](./kibana-plugin-plugins-expressions-server.expressionvalueunboxed.md) |  |
+|  [FontLabel](./kibana-plugin-plugins-expressions-server.fontlabel.md) | This type contains a unions of all supported font labels, or the the name of the font the user would see in a UI. |
+|  [FontValue](./kibana-plugin-plugins-expressions-server.fontvalue.md) | This type contains a union of all supported font values, equivalent to the CSS <code>font-value</code> property. |
+|  [InterpreterErrorType](./kibana-plugin-plugins-expressions-server.interpretererrortype.md) |  |
+|  [KIBANA\_CONTEXT\_NAME](./kibana-plugin-plugins-expressions-server.kibana_context_name.md) |  |
+|  [KibanaContext](./kibana-plugin-plugins-expressions-server.kibanacontext.md) |  |
+|  [KnownTypeToString](./kibana-plugin-plugins-expressions-server.knowntypetostring.md) | Map the type of the generic to a string-based representation of the type.<!-- -->If the provided generic is its own type interface, we use the value of the <code>type</code> key as a string literal type for it. |
+|  [PointSeries](./kibana-plugin-plugins-expressions-server.pointseries.md) | A <code>PointSeries</code> is a unique structure that represents dots on a chart. |
+|  [PointSeriesColumnName](./kibana-plugin-plugins-expressions-server.pointseriescolumnname.md) | Allowed column names in a PointSeries |
+|  [PointSeriesColumns](./kibana-plugin-plugins-expressions-server.pointseriescolumns.md) | Represents a collection of valid Columns in a PointSeries |
+|  [PointSeriesRow](./kibana-plugin-plugins-expressions-server.pointseriesrow.md) |  |
+|  [Style](./kibana-plugin-plugins-expressions-server.style.md) |  |
+|  [TypeString](./kibana-plugin-plugins-expressions-server.typestring.md) | If the type extends a Promise, we still need to return the string representation:<code>someArgument: Promise&lt;boolean &#124; string&gt;</code> results in <code>types: ['boolean', 'string']</code> |
+|  [TypeToString](./kibana-plugin-plugins-expressions-server.typetostring.md) | This can convert a type into a known Expression string representation of that type. For example, <code>TypeToString&lt;Datatable&gt;</code> will resolve to <code>'datatable'</code>. This allows Expression Functions to continue to specify their type in a simple string format. |
+|  [UnmappedTypeStrings](./kibana-plugin-plugins-expressions-server.unmappedtypestrings.md) | Types used in Expressions that don't map to a primitive cleanly:<code>date</code> is typed as a number or string, and represents a date |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.overflow.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.overflow.md
new file mode 100644
index 0000000000000..2b1d1a34cd46a
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.overflow.md
@@ -0,0 +1,23 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Overflow](./kibana-plugin-plugins-expressions-server.overflow.md)
+
+## Overflow enum
+
+Enum of supported CSS `overflow` properties.
+
+<b>Signature:</b>
+
+```typescript
+export declare enum Overflow 
+```
+
+## Enumeration Members
+
+|  Member | Value | Description |
+|  --- | --- | --- |
+|  AUTO | <code>&quot;auto&quot;</code> |  |
+|  HIDDEN | <code>&quot;hidden&quot;</code> |  |
+|  SCROLL | <code>&quot;scroll&quot;</code> |  |
+|  VISIBLE | <code>&quot;visible&quot;</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.parse.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.parse.md
new file mode 100644
index 0000000000000..ec2534986006f
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.parse.md
@@ -0,0 +1,23 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [parse](./kibana-plugin-plugins-expressions-server.parse.md)
+
+## parse() function
+
+<b>Signature:</b>
+
+```typescript
+export declare function parse<E extends string, S extends 'expression' | 'argument'>(expression: E, startRule: S): S extends 'expression' ? ExpressionAstExpression : ExpressionAstArgument;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  expression | <code>E</code> |  |
+|  startRule | <code>S</code> |  |
+
+<b>Returns:</b>
+
+`S extends 'expression' ? ExpressionAstExpression : ExpressionAstArgument`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.parseexpression.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.parseexpression.md
new file mode 100644
index 0000000000000..0d8547fd5243b
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.parseexpression.md
@@ -0,0 +1,24 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [parseExpression](./kibana-plugin-plugins-expressions-server.parseexpression.md)
+
+## parseExpression() function
+
+Given expression pipeline string, returns parsed AST.
+
+<b>Signature:</b>
+
+```typescript
+export declare function parseExpression(expression: string): ExpressionAstExpression;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  expression | <code>string</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionAstExpression`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.plugin.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.plugin.md
new file mode 100644
index 0000000000000..79a7100ebf540
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.plugin.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [plugin](./kibana-plugin-plugins-expressions-server.plugin.md)
+
+## plugin() function
+
+<b>Signature:</b>
+
+```typescript
+export declare function plugin(initializerContext: PluginInitializerContext): ExpressionsServerPlugin;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  initializerContext | <code>PluginInitializerContext</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionsServerPlugin`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseries.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseries.md
new file mode 100644
index 0000000000000..f65efd705666d
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseries.md
@@ -0,0 +1,16 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [PointSeries](./kibana-plugin-plugins-expressions-server.pointseries.md)
+
+## PointSeries type
+
+A `PointSeries` is a unique structure that represents dots on a chart.
+
+<b>Signature:</b>
+
+```typescript
+export declare type PointSeries = ExpressionValueBoxed<'pointseries', {
+    columns: PointSeriesColumns;
+    rows: PointSeriesRow[];
+}>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriescolumn.expression.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriescolumn.expression.md
new file mode 100644
index 0000000000000..c857a9f29fa60
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriescolumn.expression.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [PointSeriesColumn](./kibana-plugin-plugins-expressions-server.pointseriescolumn.md) &gt; [expression](./kibana-plugin-plugins-expressions-server.pointseriescolumn.expression.md)
+
+## PointSeriesColumn.expression property
+
+<b>Signature:</b>
+
+```typescript
+expression: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriescolumn.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriescolumn.md
new file mode 100644
index 0000000000000..5aec683421dd1
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriescolumn.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [PointSeriesColumn](./kibana-plugin-plugins-expressions-server.pointseriescolumn.md)
+
+## PointSeriesColumn interface
+
+Column in a PointSeries
+
+<b>Signature:</b>
+
+```typescript
+export interface PointSeriesColumn 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [expression](./kibana-plugin-plugins-expressions-server.pointseriescolumn.expression.md) | <code>string</code> |  |
+|  [role](./kibana-plugin-plugins-expressions-server.pointseriescolumn.role.md) | <code>'measure' &#124; 'dimension'</code> |  |
+|  [type](./kibana-plugin-plugins-expressions-server.pointseriescolumn.type.md) | <code>'number' &#124; 'string'</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriescolumn.role.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriescolumn.role.md
new file mode 100644
index 0000000000000..1f6b770ecba15
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriescolumn.role.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [PointSeriesColumn](./kibana-plugin-plugins-expressions-server.pointseriescolumn.md) &gt; [role](./kibana-plugin-plugins-expressions-server.pointseriescolumn.role.md)
+
+## PointSeriesColumn.role property
+
+<b>Signature:</b>
+
+```typescript
+role: 'measure' | 'dimension';
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriescolumn.type.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriescolumn.type.md
new file mode 100644
index 0000000000000..5cb51f460d722
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriescolumn.type.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [PointSeriesColumn](./kibana-plugin-plugins-expressions-server.pointseriescolumn.md) &gt; [type](./kibana-plugin-plugins-expressions-server.pointseriescolumn.type.md)
+
+## PointSeriesColumn.type property
+
+<b>Signature:</b>
+
+```typescript
+type: 'number' | 'string';
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriescolumnname.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriescolumnname.md
new file mode 100644
index 0000000000000..2d8522b30903c
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriescolumnname.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [PointSeriesColumnName](./kibana-plugin-plugins-expressions-server.pointseriescolumnname.md)
+
+## PointSeriesColumnName type
+
+Allowed column names in a PointSeries
+
+<b>Signature:</b>
+
+```typescript
+export declare type PointSeriesColumnName = 'x' | 'y' | 'color' | 'size' | 'text';
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriescolumns.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriescolumns.md
new file mode 100644
index 0000000000000..f6eee6e2bc9d1
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriescolumns.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [PointSeriesColumns](./kibana-plugin-plugins-expressions-server.pointseriescolumns.md)
+
+## PointSeriesColumns type
+
+Represents a collection of valid Columns in a PointSeries
+
+<b>Signature:</b>
+
+```typescript
+export declare type PointSeriesColumns = Record<PointSeriesColumnName, PointSeriesColumn> | {};
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriesrow.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriesrow.md
new file mode 100644
index 0000000000000..d9a77305e9f99
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.pointseriesrow.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [PointSeriesRow](./kibana-plugin-plugins-expressions-server.pointseriesrow.md)
+
+## PointSeriesRow type
+
+<b>Signature:</b>
+
+```typescript
+export declare type PointSeriesRow = Record<string, any>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.range.from.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.range.from.md
new file mode 100644
index 0000000000000..f349681c1472f
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.range.from.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Range](./kibana-plugin-plugins-expressions-server.range.md) &gt; [from](./kibana-plugin-plugins-expressions-server.range.from.md)
+
+## Range.from property
+
+<b>Signature:</b>
+
+```typescript
+from: number;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.range.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.range.md
new file mode 100644
index 0000000000000..d369d882757fc
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.range.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Range](./kibana-plugin-plugins-expressions-server.range.md)
+
+## Range interface
+
+<b>Signature:</b>
+
+```typescript
+export interface Range 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [from](./kibana-plugin-plugins-expressions-server.range.from.md) | <code>number</code> |  |
+|  [to](./kibana-plugin-plugins-expressions-server.range.to.md) | <code>number</code> |  |
+|  [type](./kibana-plugin-plugins-expressions-server.range.type.md) | <code>typeof name</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.range.to.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.range.to.md
new file mode 100644
index 0000000000000..c5a1fe2fe2080
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.range.to.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Range](./kibana-plugin-plugins-expressions-server.range.md) &gt; [to](./kibana-plugin-plugins-expressions-server.range.to.md)
+
+## Range.to property
+
+<b>Signature:</b>
+
+```typescript
+to: number;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.range.type.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.range.type.md
new file mode 100644
index 0000000000000..dd856dc0eb713
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.range.type.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Range](./kibana-plugin-plugins-expressions-server.range.md) &gt; [type](./kibana-plugin-plugins-expressions-server.range.type.md)
+
+## Range.type property
+
+<b>Signature:</b>
+
+```typescript
+type: typeof name;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.serializeddatatable.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.serializeddatatable.md
new file mode 100644
index 0000000000000..12951f9323503
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.serializeddatatable.md
@@ -0,0 +1,18 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [SerializedDatatable](./kibana-plugin-plugins-expressions-server.serializeddatatable.md)
+
+## SerializedDatatable interface
+
+<b>Signature:</b>
+
+```typescript
+export interface SerializedDatatable extends Datatable 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [rows](./kibana-plugin-plugins-expressions-server.serializeddatatable.rows.md) | <code>string[][]</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.serializeddatatable.rows.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.serializeddatatable.rows.md
new file mode 100644
index 0000000000000..e82504f153f6b
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.serializeddatatable.rows.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [SerializedDatatable](./kibana-plugin-plugins-expressions-server.serializeddatatable.md) &gt; [rows](./kibana-plugin-plugins-expressions-server.serializeddatatable.rows.md)
+
+## SerializedDatatable.rows property
+
+<b>Signature:</b>
+
+```typescript
+rows: string[][];
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.serializedfieldformat.id.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.serializedfieldformat.id.md
new file mode 100644
index 0000000000000..def3296aedcf7
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.serializedfieldformat.id.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [SerializedFieldFormat](./kibana-plugin-plugins-expressions-server.serializedfieldformat.md) &gt; [id](./kibana-plugin-plugins-expressions-server.serializedfieldformat.id.md)
+
+## SerializedFieldFormat.id property
+
+<b>Signature:</b>
+
+```typescript
+id?: string;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.serializedfieldformat.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.serializedfieldformat.md
new file mode 100644
index 0000000000000..c62e830ccf7b9
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.serializedfieldformat.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [SerializedFieldFormat](./kibana-plugin-plugins-expressions-server.serializedfieldformat.md)
+
+## SerializedFieldFormat interface
+
+JSON representation of a field formatter configuration. Is used to carry information about how to format data in a data table as part of the column definition.
+
+<b>Signature:</b>
+
+```typescript
+export interface SerializedFieldFormat<TParams = Record<string, any>> 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [id](./kibana-plugin-plugins-expressions-server.serializedfieldformat.id.md) | <code>string</code> |  |
+|  [params](./kibana-plugin-plugins-expressions-server.serializedfieldformat.params.md) | <code>TParams</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.serializedfieldformat.params.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.serializedfieldformat.params.md
new file mode 100644
index 0000000000000..8861f729aa2b1
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.serializedfieldformat.params.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [SerializedFieldFormat](./kibana-plugin-plugins-expressions-server.serializedfieldformat.md) &gt; [params](./kibana-plugin-plugins-expressions-server.serializedfieldformat.params.md)
+
+## SerializedFieldFormat.params property
+
+<b>Signature:</b>
+
+```typescript
+params?: TParams;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.style.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.style.md
new file mode 100644
index 0000000000000..e43addfd5ff30
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.style.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [Style](./kibana-plugin-plugins-expressions-server.style.md)
+
+## Style type
+
+<b>Signature:</b>
+
+```typescript
+export declare type Style = ExpressionTypeStyle;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.textalignment.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.textalignment.md
new file mode 100644
index 0000000000000..2adc12371b4be
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.textalignment.md
@@ -0,0 +1,23 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [TextAlignment](./kibana-plugin-plugins-expressions-server.textalignment.md)
+
+## TextAlignment enum
+
+Enum of supported CSS `text-align` properties.
+
+<b>Signature:</b>
+
+```typescript
+export declare enum TextAlignment 
+```
+
+## Enumeration Members
+
+|  Member | Value | Description |
+|  --- | --- | --- |
+|  CENTER | <code>&quot;center&quot;</code> |  |
+|  JUSTIFY | <code>&quot;justify&quot;</code> |  |
+|  LEFT | <code>&quot;left&quot;</code> |  |
+|  RIGHT | <code>&quot;right&quot;</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.textdecoration.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.textdecoration.md
new file mode 100644
index 0000000000000..98d9b38547baf
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.textdecoration.md
@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [TextDecoration](./kibana-plugin-plugins-expressions-server.textdecoration.md)
+
+## TextDecoration enum
+
+Enum of supported CSS `text-decoration` properties.
+
+<b>Signature:</b>
+
+```typescript
+export declare enum TextDecoration 
+```
+
+## Enumeration Members
+
+|  Member | Value | Description |
+|  --- | --- | --- |
+|  NONE | <code>&quot;none&quot;</code> |  |
+|  UNDERLINE | <code>&quot;underline&quot;</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typesregistry._constructor_.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typesregistry._constructor_.md
new file mode 100644
index 0000000000000..87290d88214d0
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typesregistry._constructor_.md
@@ -0,0 +1,20 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [TypesRegistry](./kibana-plugin-plugins-expressions-server.typesregistry.md) &gt; [(constructor)](./kibana-plugin-plugins-expressions-server.typesregistry._constructor_.md)
+
+## TypesRegistry.(constructor)
+
+Constructs a new instance of the `TypesRegistry` class
+
+<b>Signature:</b>
+
+```typescript
+constructor(executor: Executor<any>);
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  executor | <code>Executor&lt;any&gt;</code> |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typesregistry.get.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typesregistry.get.md
new file mode 100644
index 0000000000000..c8d674eab50cd
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typesregistry.get.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [TypesRegistry](./kibana-plugin-plugins-expressions-server.typesregistry.md) &gt; [get](./kibana-plugin-plugins-expressions-server.typesregistry.get.md)
+
+## TypesRegistry.get() method
+
+<b>Signature:</b>
+
+```typescript
+get(id: string): ExpressionType | null;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  id | <code>string</code> |  |
+
+<b>Returns:</b>
+
+`ExpressionType | null`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typesregistry.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typesregistry.md
new file mode 100644
index 0000000000000..2c4d75e020035
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typesregistry.md
@@ -0,0 +1,27 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [TypesRegistry](./kibana-plugin-plugins-expressions-server.typesregistry.md)
+
+## TypesRegistry class
+
+<b>Signature:</b>
+
+```typescript
+export declare class TypesRegistry implements IRegistry<ExpressionType> 
+```
+
+## Constructors
+
+|  Constructor | Modifiers | Description |
+|  --- | --- | --- |
+|  [(constructor)(executor)](./kibana-plugin-plugins-expressions-server.typesregistry._constructor_.md) |  | Constructs a new instance of the <code>TypesRegistry</code> class |
+
+## Methods
+
+|  Method | Modifiers | Description |
+|  --- | --- | --- |
+|  [get(id)](./kibana-plugin-plugins-expressions-server.typesregistry.get.md) |  |  |
+|  [register(typeDefinition)](./kibana-plugin-plugins-expressions-server.typesregistry.register.md) |  |  |
+|  [toArray()](./kibana-plugin-plugins-expressions-server.typesregistry.toarray.md) |  |  |
+|  [toJS()](./kibana-plugin-plugins-expressions-server.typesregistry.tojs.md) |  |  |
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typesregistry.register.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typesregistry.register.md
new file mode 100644
index 0000000000000..935a862407dfe
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typesregistry.register.md
@@ -0,0 +1,22 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [TypesRegistry](./kibana-plugin-plugins-expressions-server.typesregistry.md) &gt; [register](./kibana-plugin-plugins-expressions-server.typesregistry.register.md)
+
+## TypesRegistry.register() method
+
+<b>Signature:</b>
+
+```typescript
+register(typeDefinition: AnyExpressionTypeDefinition | (() => AnyExpressionTypeDefinition)): void;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  typeDefinition | <code>AnyExpressionTypeDefinition &#124; (() =&gt; AnyExpressionTypeDefinition)</code> |  |
+
+<b>Returns:</b>
+
+`void`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typesregistry.toarray.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typesregistry.toarray.md
new file mode 100644
index 0000000000000..e3c6b13a22a58
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typesregistry.toarray.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [TypesRegistry](./kibana-plugin-plugins-expressions-server.typesregistry.md) &gt; [toArray](./kibana-plugin-plugins-expressions-server.typesregistry.toarray.md)
+
+## TypesRegistry.toArray() method
+
+<b>Signature:</b>
+
+```typescript
+toArray(): ExpressionType[];
+```
+<b>Returns:</b>
+
+`ExpressionType[]`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typesregistry.tojs.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typesregistry.tojs.md
new file mode 100644
index 0000000000000..2ff258bd54e44
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typesregistry.tojs.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [TypesRegistry](./kibana-plugin-plugins-expressions-server.typesregistry.md) &gt; [toJS](./kibana-plugin-plugins-expressions-server.typesregistry.tojs.md)
+
+## TypesRegistry.toJS() method
+
+<b>Signature:</b>
+
+```typescript
+toJS(): Record<string, ExpressionType>;
+```
+<b>Returns:</b>
+
+`Record<string, ExpressionType>`
+
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typestring.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typestring.md
new file mode 100644
index 0000000000000..af4d5ae0bf814
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typestring.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [TypeString](./kibana-plugin-plugins-expressions-server.typestring.md)
+
+## TypeString type
+
+If the type extends a Promise, we still need to return the string representation:
+
+`someArgument: Promise<boolean | string>` results in `types: ['boolean', 'string']`
+
+<b>Signature:</b>
+
+```typescript
+export declare type TypeString<T> = KnownTypeToString<UnwrapPromiseOrReturn<T>>;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typetostring.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typetostring.md
new file mode 100644
index 0000000000000..578438c03a0e5
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.typetostring.md
@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [TypeToString](./kibana-plugin-plugins-expressions-server.typetostring.md)
+
+## TypeToString type
+
+This can convert a type into a known Expression string representation of that type. For example, `TypeToString<Datatable>` will resolve to `'datatable'`<!-- -->. This allows Expression Functions to continue to specify their type in a simple string format.
+
+<b>Signature:</b>
+
+```typescript
+export declare type TypeToString<T> = KnownTypeToString<T> | UnmappedTypeStrings;
+```
diff --git a/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.unmappedtypestrings.md b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.unmappedtypestrings.md
new file mode 100644
index 0000000000000..da872bfabce4f
--- /dev/null
+++ b/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.unmappedtypestrings.md
@@ -0,0 +1,15 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) &gt; [UnmappedTypeStrings](./kibana-plugin-plugins-expressions-server.unmappedtypestrings.md)
+
+## UnmappedTypeStrings type
+
+Types used in Expressions that don't map to a primitive cleanly:
+
+`date` is typed as a number or string, and represents a date
+
+<b>Signature:</b>
+
+```typescript
+export declare type UnmappedTypeStrings = 'date' | 'filter';
+```
diff --git a/src/dev/run_check_published_api_changes.ts b/src/dev/run_check_published_api_changes.ts
index 28e8570812915..5a6b6e092da2c 100644
--- a/src/dev/run_check_published_api_changes.ts
+++ b/src/dev/run_check_published_api_changes.ts
@@ -230,6 +230,8 @@ async function run(folder: string, { opts }: { opts: Options }): Promise<boolean
   const plugins = [
     'plugins/data/server',
     'plugins/data/public',
+    'plugins/expressions/server',
+    'plugins/expressions/public',
     'plugins/kibana_utils/common/state_containers',
     'plugins/kibana_utils/public/state_sync',
   ];
diff --git a/src/plugins/expressions/README.asciidoc b/src/plugins/expressions/README.asciidoc
new file mode 100644
index 0000000000000..e07f6e2909ab8
--- /dev/null
+++ b/src/plugins/expressions/README.asciidoc
@@ -0,0 +1,55 @@
+[[kibana-expressions-plugin]]
+== `expressions` plugin
+
+Expression pipeline is a chain of functions that *pipe* its output to the
+input of the next function. Functions can be configured using arguments provided
+by the user. The final output of the expression pipeline can be rendered using
+one of the *renderers* registered in `expressions` plugin.
+
+All the arguments to expression functions need to be serializable, as well as input and output.
+Expression functions should try to stay 'pure'. This makes functions easy to reuse and also 
+make it possible to serialize the whole chain as well as output at every step of execution.
+
+Expressions power visualizations in Dashboard and Lens, as well as, every
+*element* in Canvas is backed by an expression.
+
+This plugin provides methods which will parse & execute an *expression pipeline*
+string for you, as well as a series of registries for advanced users who might
+want to incorporate their own functions, types, and renderers into the service
+for use in their own application.
+
+=== Examples
+
+Below is an example of serialized expression for one Canvas element that fetches 
+data using `essql` function, pipes it further to `math` and `metric` functions, 
+and final `render` function renders the result.
+
+[source]
+filters
+| essql
+  query="SELECT COUNT(timestamp) as total_errors
+    FROM kibana_sample_data_logs
+    WHERE tags LIKE '%warning%' OR tags LIKE '%error%'"
+| math "total_errors"
+| metric "TOTAL ISSUES"
+  metricFont={font family="'Open Sans', Helvetica, Arial, sans-serif" size=48 align="left" color="#FFFFFF" weight="normal" underline=false italic=false}
+  labelFont={font family="'Open Sans', Helvetica, Arial, sans-serif" size=30 align="left" color="#FFFFFF" weight="lighter" underline=false italic=false}
+| render
+[/source]
+
+[role="screenshot"]
+image::https://user-images.githubusercontent.com/9773803/74162514-3250a880-4c21-11ea-9e68-86f66862a183.png[]
+
+=== API documentation
+
+==== Server API
+https://github.com/elastic/kibana/blob/master/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserversetup.md[Server Setup contract]
+https://github.com/elastic/kibana/blob/master/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.expressionsserverstart.md[Server Start contract]
+
+===== Browser API
+https://github.com/elastic/kibana/blob/master/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsservicesetup.md[Browser Setup contract]
+https://github.com/elastic/kibana/blob/master/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionsstart.md[Browser Start contract]
+
+
+==== Other documentation
+https://www.elastic.co/guide/en/kibana/current/canvas-function-arguments.html[See Canvas documentation about expressions]
diff --git a/src/plugins/expressions/README.md b/src/plugins/expressions/README.md
deleted file mode 100644
index c1f032ace37c9..0000000000000
--- a/src/plugins/expressions/README.md
+++ /dev/null
@@ -1,35 +0,0 @@
-# `expressions` plugin
-
-This plugin provides methods which will parse & execute an *expression pipeline*
-string for you, as well as a series of registries for advanced users who might
-want to incorporate their own functions, types, and renderers into the service
-for use in their own application.
-
-Expression pipeline is a chain of functions that *pipe* its output to the
-input of the next function. Functions can be configured using arguments provided
-by the user. The final output of the expression pipeline can be rendered using
-one of the *renderers* registered in `expressions` plugin.
-
-Expressions power visualizations in Dashboard and Lens, as well as, every
-*element* in Canvas is backed by an expression.
-
-Below is an example of one Canvas element that fetches data using `essql` function,
-pipes it further to `math` and `metric` functions, and final `render` function
-renders the result.
-
-```
-filters
-| essql
-  query="SELECT COUNT(timestamp) as total_errors
-    FROM kibana_sample_data_logs
-    WHERE tags LIKE '%warning%' OR tags LIKE '%error%'"
-| math "total_errors"
-| metric "TOTAL ISSUES"
-  metricFont={font family="'Open Sans', Helvetica, Arial, sans-serif" size=48 align="left" color="#FFFFFF" weight="normal" underline=false italic=false}
-  labelFont={font family="'Open Sans', Helvetica, Arial, sans-serif" size=30 align="left" color="#FFFFFF" weight="lighter" underline=false italic=false}
-| render
-```
-
-![image](https://user-images.githubusercontent.com/9773803/74162514-3250a880-4c21-11ea-9e68-86f66862a183.png)
-
-[See Canvas documentation about expressions](https://www.elastic.co/guide/en/kibana/current/canvas-function-arguments.html).
diff --git a/src/plugins/expressions/common/execution/execution_contract.ts b/src/plugins/expressions/common/execution/execution_contract.ts
index 8c784352b9fdf..20c5b2dd434b5 100644
--- a/src/plugins/expressions/common/execution/execution_contract.ts
+++ b/src/plugins/expressions/common/execution/execution_contract.ts
@@ -18,6 +18,8 @@
  */
 
 import { Execution } from './execution';
+import { ExpressionValueError } from '../expression_types/specs';
+import { ExpressionAstExpression } from '../ast';
 
 /**
  * `ExecutionContract` is a wrapper around `Execution` class. It provides the
@@ -53,7 +55,7 @@ export class ExecutionContract<
    * wraps that error into `ExpressionValueError` type and returns that.
    * This function never throws.
    */
-  getData = async () => {
+  getData = async (): Promise<Output | ExpressionValueError> => {
     try {
       return await this.execution.result;
     } catch (e) {
@@ -80,7 +82,7 @@ export class ExecutionContract<
   /**
    * Get AST used to execute the expression.
    */
-  getAst = () => this.execution.state.get().ast;
+  getAst = (): ExpressionAstExpression => this.execution.state.get().ast;
 
   /**
    * Get Inspector adapters provided to all functions of expression through
diff --git a/src/plugins/expressions/common/expression_types/specs/error.ts b/src/plugins/expressions/common/expression_types/specs/error.ts
index c95a019f4e8d2..ebaedcbba0d23 100644
--- a/src/plugins/expressions/common/expression_types/specs/error.ts
+++ b/src/plugins/expressions/common/expression_types/specs/error.ts
@@ -28,6 +28,7 @@ export type ExpressionValueError = ExpressionValueBoxed<
   {
     error: {
       message: string;
+      type?: string;
       name?: string;
       stack?: string;
       original?: Error;
diff --git a/src/plugins/expressions/common/service/expressions_services.ts b/src/plugins/expressions/common/service/expressions_services.ts
index f1053c7bb8411..b5c98fada07c4 100644
--- a/src/plugins/expressions/common/service/expressions_services.ts
+++ b/src/plugins/expressions/common/service/expressions_services.ts
@@ -18,9 +18,11 @@
  */
 
 import { Executor } from '../executor';
-import { ExpressionRendererRegistry } from '../expression_renderers';
+import { AnyExpressionRenderDefinition, ExpressionRendererRegistry } from '../expression_renderers';
 import { ExpressionAstExpression } from '../ast';
 import { ExecutionContract } from '../execution/execution_contract';
+import { AnyExpressionTypeDefinition } from '../expression_types';
+import { AnyExpressionFunctionDefinition } from '../expression_functions';
 
 /**
  * The public contract that `ExpressionsService` provides to other plugins
@@ -45,18 +47,88 @@ export type ExpressionsServiceSetup = Pick<
  * The public contract that `ExpressionsService` provides to other plugins
  * in Kibana Platform in *start* life-cycle.
  */
-export type ExpressionsServiceStart = Pick<
-  ExpressionsService,
-  | 'getFunction'
-  | 'getFunctions'
-  | 'getRenderer'
-  | 'getRenderers'
-  | 'getType'
-  | 'getTypes'
-  | 'run'
-  | 'execute'
-  | 'fork'
->;
+export interface ExpressionsServiceStart {
+  /**
+   * Get a registered `ExpressionFunction` by its name, which was registered
+   * using the `registerFunction` method. The returned `ExpressionFunction`
+   * instance is an internal representation of the function in Expressions
+   * service - do not mutate that object.
+   */
+  getFunction: (name: string) => ReturnType<Executor['getFunction']>;
+
+  /**
+   * Get a registered `ExpressionRenderer` by its name, which was registered
+   * using the `registerRenderer` method. The returned `ExpressionRenderer`
+   * instance is an internal representation of the renderer in Expressions
+   * service - do not mutate that object.
+   */
+  getRenderer: (name: string) => ReturnType<ExpressionRendererRegistry['get']>;
+
+  /**
+   * Get a registered `ExpressionType` by its name, which was registered
+   * using the `registerType` method. The returned `ExpressionType`
+   * instance is an internal representation of the type in Expressions
+   * service - do not mutate that object.
+   */
+  getType: (name: string) => ReturnType<Executor['getType']>;
+
+  /**
+   * Executes expression string or a parsed expression AST and immediately
+   * returns the result.
+   *
+   * Below example will execute `sleep 100 | clog` expression with `123` initial
+   * input to the first function.
+   *
+   * ```ts
+   * expressions.run('sleep 100 | clog', 123);
+   * ```
+   *
+   * - `sleep 100` will delay execution by 100 milliseconds and pass the `123` input as
+   *   its output.
+   * - `clog` will print to console `123` and pass it as its output.
+   * - The final result of the execution will be `123`.
+   *
+   * Optionally, you can pass an object as the third argument which will be used
+   * to extend the `ExecutionContext`&mdash;an object passed to each function
+   * as the third argument, that allows functions to perform side-effects.
+   *
+   * ```ts
+   * expressions.run('...', null, { elasticsearchClient });
+   * ```
+   */
+  run: <Input, Output, ExtraContext extends Record<string, unknown> = Record<string, unknown>>(
+    ast: string | ExpressionAstExpression,
+    input: Input,
+    context?: ExtraContext
+  ) => Promise<Output>;
+
+  /**
+   * Starts expression execution and immediately returns `ExecutionContract`
+   * instance that tracks the progress of the execution and can be used to
+   * interact with the execution.
+   */
+  execute: <
+    Input = unknown,
+    Output = unknown,
+    ExtraContext extends Record<string, unknown> = Record<string, unknown>
+  >(
+    ast: string | ExpressionAstExpression,
+    // This any is for legacy reasons.
+    input: Input,
+    context?: ExtraContext
+  ) => ExecutionContract<ExtraContext, Input, Output>;
+
+  /**
+   * Create a new instance of `ExpressionsService`. The new instance inherits
+   * all state of the original `ExpressionsService`, including all expression
+   * types, expression functions and context. Also, all new types and functions
+   * registered in the original services AFTER the forking event will be
+   * available in the forked instance. However, all new types and functions
+   * registered in the forked instances will NOT be available to the original
+   * service.
+   */
+  fork: () => ExpressionsService;
+}
 
 export interface ExpressionServiceParams {
   executor?: Executor;
@@ -127,58 +199,21 @@ export class ExpressionsService {
    * passed to all functions that can be used for side-effects.
    */
   public readonly registerFunction = (
-    ...args: Parameters<Executor['registerFunction']>
-  ): ReturnType<Executor['registerFunction']> => this.executor.registerFunction(...args);
+    functionDefinition: AnyExpressionFunctionDefinition | (() => AnyExpressionFunctionDefinition)
+  ): void => this.executor.registerFunction(functionDefinition);
 
   public readonly registerType = (
-    ...args: Parameters<Executor['registerType']>
-  ): ReturnType<Executor['registerType']> => this.executor.registerType(...args);
+    typeDefinition: AnyExpressionTypeDefinition | (() => AnyExpressionTypeDefinition)
+  ): void => this.executor.registerType(typeDefinition);
 
   public readonly registerRenderer = (
-    ...args: Parameters<ExpressionRendererRegistry['register']>
-  ): ReturnType<ExpressionRendererRegistry['register']> => this.renderers.register(...args);
+    definition: AnyExpressionRenderDefinition | (() => AnyExpressionRenderDefinition)
+  ): void => this.renderers.register(definition);
 
-  /**
-   * Executes expression string or a parsed expression AST and immediately
-   * returns the result.
-   *
-   * Below example will execute `sleep 100 | clog` expression with `123` initial
-   * input to the first function.
-   *
-   * ```ts
-   * expressions.run('sleep 100 | clog', 123);
-   * ```
-   *
-   * - `sleep 100` will delay execution by 100 milliseconds and pass the `123` input as
-   *   its output.
-   * - `clog` will print to console `123` and pass it as its output.
-   * - The final result of the execution will be `123`.
-   *
-   * Optionally, you can pass an object as the third argument which will be used
-   * to extend the `ExecutionContext`&mdash;an object passed to each function
-   * as the third argument, that allows functions to perform side-effects.
-   *
-   * ```ts
-   * expressions.run('...', null, { elasticsearchClient });
-   * ```
-   */
-  public readonly run = <
-    Input,
-    Output,
-    ExtraContext extends Record<string, unknown> = Record<string, unknown>
-  >(
-    ast: string | ExpressionAstExpression,
-    input: Input,
-    context?: ExtraContext
-  ): Promise<Output> => this.executor.run<Input, Output, ExtraContext>(ast, input, context);
+  public readonly run: ExpressionsServiceStart['run'] = (ast, input, context) =>
+    this.executor.run(ast, input, context);
 
-  /**
-   * Get a registered `ExpressionFunction` by its name, which was registered
-   * using the `registerFunction` method. The returned `ExpressionFunction`
-   * instance is an internal representation of the function in Expressions
-   * service - do not mutate that object.
-   */
-  public readonly getFunction = (name: string): ReturnType<Executor['getFunction']> =>
+  public readonly getFunction: ExpressionsServiceStart['getFunction'] = (name) =>
     this.executor.getFunction(name);
 
   /**
@@ -188,13 +223,7 @@ export class ExpressionsService {
   public readonly getFunctions = (): ReturnType<Executor['getFunctions']> =>
     this.executor.getFunctions();
 
-  /**
-   * Get a registered `ExpressionRenderer` by its name, which was registered
-   * using the `registerRenderer` method. The returned `ExpressionRenderer`
-   * instance is an internal representation of the renderer in Expressions
-   * service - do not mutate that object.
-   */
-  public readonly getRenderer = (name: string): ReturnType<ExpressionRendererRegistry['get']> =>
+  public readonly getRenderer: ExpressionsServiceStart['getRenderer'] = (name) =>
     this.renderers.get(name);
 
   /**
@@ -204,13 +233,7 @@ export class ExpressionsService {
   public readonly getRenderers = (): ReturnType<ExpressionRendererRegistry['toJS']> =>
     this.renderers.toJS();
 
-  /**
-   * Get a registered `ExpressionType` by its name, which was registered
-   * using the `registerType` method. The returned `ExpressionType`
-   * instance is an internal representation of the type in Expressions
-   * service - do not mutate that object.
-   */
-  public readonly getType = (name: string): ReturnType<Executor['getType']> =>
+  public readonly getType: ExpressionsServiceStart['getType'] = (name) =>
     this.executor.getType(name);
 
   /**
@@ -219,36 +242,13 @@ export class ExpressionsService {
    */
   public readonly getTypes = (): ReturnType<Executor['getTypes']> => this.executor.getTypes();
 
-  /**
-   * Starts expression execution and immediately returns `ExecutionContract`
-   * instance that tracks the progress of the execution and can be used to
-   * interact with the execution.
-   */
-  public readonly execute = <
-    Input = unknown,
-    Output = unknown,
-    ExtraContext extends Record<string, unknown> = Record<string, unknown>
-  >(
-    ast: string | ExpressionAstExpression,
-    // This any is for legacy reasons.
-    input: Input = { type: 'null' } as any,
-    context?: ExtraContext
-  ): ExecutionContract<ExtraContext, Input, Output> => {
-    const execution = this.executor.createExecution<ExtraContext, Input, Output>(ast, context);
+  public readonly execute: ExpressionsServiceStart['execute'] = ((ast, input, context) => {
+    const execution = this.executor.createExecution(ast, context);
     execution.start(input);
     return execution.contract;
-  };
+  }) as ExpressionsServiceStart['execute'];
 
-  /**
-   * Create a new instance of `ExpressionsService`. The new instance inherits
-   * all state of the original `ExpressionsService`, including all expression
-   * types, expression functions and context. Also, all new types and functions
-   * registered in the original services AFTER the forking event will be
-   * available in the forked instance. However, all new types and functions
-   * registered in the forked instances will NOT be available to the original
-   * service.
-   */
-  public readonly fork = (): ExpressionsService => {
+  public readonly fork = () => {
     const executor = this.executor.fork();
     const renderers = this.renderers;
     const fork = new ExpressionsService({ executor, renderers });
diff --git a/src/plugins/expressions/public/index.ts b/src/plugins/expressions/public/index.ts
index 87406db89a2a8..039890c9233cf 100644
--- a/src/plugins/expressions/public/index.ts
+++ b/src/plugins/expressions/public/index.ts
@@ -122,4 +122,7 @@ export {
   TypeToString,
   UnmappedTypeStrings,
   ExpressionValueRender as Render,
+  ExpressionsService,
+  ExpressionsServiceSetup,
+  ExpressionsServiceStart,
 } from '../common';
diff --git a/src/plugins/expressions/public/mocks.tsx b/src/plugins/expressions/public/mocks.tsx
index 3865b4d20620a..f6546a6b7ff35 100644
--- a/src/plugins/expressions/public/mocks.tsx
+++ b/src/plugins/expressions/public/mocks.tsx
@@ -49,11 +49,8 @@ const createStartContract = (): Start => {
     ExpressionRenderHandler: jest.fn(),
     fork: jest.fn(),
     getFunction: jest.fn(),
-    getFunctions: jest.fn(),
     getRenderer: jest.fn(),
-    getRenderers: jest.fn(),
     getType: jest.fn(),
-    getTypes: jest.fn(),
     loader: jest.fn(),
     ReactExpressionRenderer: jest.fn((props) => <></>),
     render: jest.fn(),
diff --git a/src/plugins/expressions/public/plugin.test.ts b/src/plugins/expressions/public/plugin.test.ts
index 08f7135f033f1..d9dde1f6def68 100644
--- a/src/plugins/expressions/public/plugin.test.ts
+++ b/src/plugins/expressions/public/plugin.test.ts
@@ -67,7 +67,7 @@ describe('ExpressionsPublicPlugin', () => {
         const { doStart } = await expressionsPluginMock.createPlugin();
         const start = await doStart();
 
-        const handler = start.execute('clog');
+        const handler = start.execute('clog', null);
         expect(handler.getAst()).toMatchInlineSnapshot(`
           Object {
             "chain": Array [
@@ -85,7 +85,7 @@ describe('ExpressionsPublicPlugin', () => {
       test('"kibana" function return value of type "kibana_context"', async () => {
         const { doStart } = await expressionsPluginMock.createPlugin();
         const start = await doStart();
-        const execution = start.execute('kibana');
+        const execution = start.execute('kibana', null);
         const result = await execution.getData();
 
         expect((result as any).type).toBe('kibana_context');
diff --git a/src/plugins/expressions/public/plugin.ts b/src/plugins/expressions/public/plugin.ts
index 9768ece899dd4..4ad0e53cdd9c0 100644
--- a/src/plugins/expressions/public/plugin.ts
+++ b/src/plugins/expressions/public/plugin.ts
@@ -21,20 +21,26 @@ import { PluginInitializerContext, CoreSetup, CoreStart, Plugin } from 'src/core
 import {
   ExpressionsService,
   ExpressionsServiceSetup,
-  ExpressionsServiceStart,
   ExecutionContext,
+  ExpressionsServiceStart,
 } from '../common';
 import { setRenderersRegistry, setNotifications, setExpressionsService } from './services';
 import { ReactExpressionRenderer } from './react_expression_renderer';
-import { ExpressionLoader, loader } from './loader';
+import { ExpressionLoader, IExpressionLoader, loader } from './loader';
 import { render, ExpressionRenderHandler } from './render';
 
+/**
+ * Expressions public setup contract, extends {@link ExpressionsServiceSetup}
+ */
 export type ExpressionsSetup = ExpressionsServiceSetup;
 
+/**
+ * Expressions public start contrect, extends {@link ExpressionServiceStart}
+ */
 export interface ExpressionsStart extends ExpressionsServiceStart {
   ExpressionLoader: typeof ExpressionLoader;
   ExpressionRenderHandler: typeof ExpressionRenderHandler;
-  loader: typeof loader;
+  loader: IExpressionLoader;
   ReactExpressionRenderer: typeof ReactExpressionRenderer;
   render: typeof render;
 }
diff --git a/src/plugins/expressions/public/public.api.md b/src/plugins/expressions/public/public.api.md
new file mode 100644
index 0000000000000..162f0ef6824f5
--- /dev/null
+++ b/src/plugins/expressions/public/public.api.md
@@ -0,0 +1,1164 @@
+## API Report File for "kibana"
+
+> Do not edit this file. It is a report generated by [API Extractor](https://api-extractor.com/).
+
+```ts
+
+import { CoreSetup } from 'src/core/public';
+import { CoreStart } from 'src/core/public';
+import { Ensure } from '@kbn/utility-types';
+import { EnvironmentMode } from '@kbn/config';
+import { EventEmitter } from 'events';
+import { Observable } from 'rxjs';
+import { PackageInfo } from '@kbn/config';
+import { Plugin as Plugin_2 } from 'src/core/public';
+import { PluginInitializerContext as PluginInitializerContext_2 } from 'src/core/public';
+import React from 'react';
+import { UnwrapPromiseOrReturn } from '@kbn/utility-types';
+
+// Warning: (ae-missing-release-tag) "AnyExpressionFunctionDefinition" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type AnyExpressionFunctionDefinition = ExpressionFunctionDefinition<string, any, Record<string, any>, any>;
+
+// Warning: (ae-missing-release-tag) "AnyExpressionTypeDefinition" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type AnyExpressionTypeDefinition = ExpressionTypeDefinition<any, any, any>;
+
+// Warning: (ae-forgotten-export) The symbol "SingleArgumentType" needs to be exported by the entry point index.d.ts
+// Warning: (ae-forgotten-export) The symbol "MultipleArgumentType" needs to be exported by the entry point index.d.ts
+// Warning: (ae-forgotten-export) The symbol "UnresolvedSingleArgumentType" needs to be exported by the entry point index.d.ts
+// Warning: (ae-forgotten-export) The symbol "UnresolvedMultipleArgumentType" needs to be exported by the entry point index.d.ts
+// Warning: (ae-missing-release-tag) "ArgumentType" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type ArgumentType<T> = SingleArgumentType<T> | MultipleArgumentType<T> | UnresolvedSingleArgumentType<T> | UnresolvedMultipleArgumentType<T>;
+
+// Warning: (ae-missing-release-tag) "buildExpression" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export function buildExpression(initialState?: ExpressionAstFunctionBuilder[] | ExpressionAstExpression | string): ExpressionAstExpressionBuilder;
+
+// Warning: (ae-forgotten-export) The symbol "InferFunctionDefinition" needs to be exported by the entry point index.d.ts
+// Warning: (ae-forgotten-export) The symbol "FunctionArgs" needs to be exported by the entry point index.d.ts
+// Warning: (ae-missing-release-tag) "buildExpressionFunction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export function buildExpressionFunction<FnDef extends AnyExpressionFunctionDefinition = AnyExpressionFunctionDefinition>(fnName: InferFunctionDefinition<FnDef>['name'],
+initialArgs: {
+    [K in keyof FunctionArgs<FnDef>]: FunctionArgs<FnDef>[K] | ExpressionAstExpressionBuilder | ExpressionAstExpressionBuilder[];
+}): ExpressionAstFunctionBuilder<FnDef>;
+
+// Warning: (ae-missing-release-tag) "Datatable" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export interface Datatable {
+    // (undocumented)
+    columns: DatatableColumn[];
+    // (undocumented)
+    rows: DatatableRow[];
+    // Warning: (ae-forgotten-export) The symbol "name" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    type: typeof name;
+}
+
+// Warning: (ae-missing-release-tag) "DatatableColumn" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export interface DatatableColumn {
+    // (undocumented)
+    id: string;
+    // Warning: (ae-forgotten-export) The symbol "DatatableColumnMeta" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    meta: DatatableColumnMeta;
+    // (undocumented)
+    name: string;
+}
+
+// Warning: (ae-missing-release-tag) "DatatableColumnType" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type DatatableColumnType = 'string' | 'number' | 'boolean' | 'date' | 'null';
+
+// Warning: (ae-missing-release-tag) "DatatableRow" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type DatatableRow = Record<string, any>;
+
+// Warning: (ae-forgotten-export) The symbol "Adapters" needs to be exported by the entry point index.d.ts
+// Warning: (ae-forgotten-export) The symbol "DefaultInspectorAdapters" needs to be exported by the entry point index.d.ts
+// Warning: (ae-missing-release-tag) "Execution" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export class Execution<ExtraContext extends Record<string, unknown> = Record<string, unknown>, Input = unknown, Output = unknown, InspectorAdapters extends Adapters = ExtraContext['inspectorAdapters'] extends object ? ExtraContext['inspectorAdapters'] : DefaultInspectorAdapters> {
+    constructor(params: ExecutionParams<ExtraContext>);
+    cancel(): void;
+    // (undocumented)
+    cast(value: any, toTypeNames?: string[]): any;
+    readonly context: ExecutionContext<Input, InspectorAdapters> & ExtraContext;
+    readonly contract: ExecutionContract<ExtraContext, Input, Output, InspectorAdapters>;
+    // (undocumented)
+    readonly expression: string;
+    input: Input;
+    // (undocumented)
+    get inspectorAdapters(): InspectorAdapters;
+    // Warning: (ae-forgotten-export) The symbol "ExpressionExecOptions" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    interpret<T>(ast: ExpressionAstNode, input: T, options?: ExpressionExecOptions): Promise<unknown>;
+    // (undocumented)
+    invokeChain(chainArr: ExpressionAstFunction[], input: unknown): Promise<any>;
+    // (undocumented)
+    invokeFunction(fn: ExpressionFunction, input: unknown, args: Record<string, unknown>): Promise<any>;
+    // (undocumented)
+    readonly params: ExecutionParams<ExtraContext>;
+    // (undocumented)
+    resolveArgs(fnDef: ExpressionFunction, input: unknown, argAsts: any): Promise<any>;
+    // (undocumented)
+    get result(): Promise<Output | ExpressionValueError>;
+    start(input?: Input): void;
+    readonly state: ExecutionContainer<Output | ExpressionValueError>;
+}
+
+// Warning: (ae-forgotten-export) The symbol "StateContainer" needs to be exported by the entry point index.d.ts
+// Warning: (ae-forgotten-export) The symbol "ExecutionPureTransitions" needs to be exported by the entry point index.d.ts
+// Warning: (ae-missing-release-tag) "ExecutionContainer" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExecutionContainer<Output = ExpressionValue> = StateContainer<ExecutionState<Output>, ExecutionPureTransitions<Output>>;
+
+// Warning: (ae-missing-release-tag) "ExecutionContext" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export interface ExecutionContext<Input = unknown, InspectorAdapters extends Adapters = Adapters> {
+    abortSignal: AbortSignal;
+    getInitialInput: () => Input;
+    // Warning: (ae-forgotten-export) The symbol "SavedObjectAttributes" needs to be exported by the entry point index.d.ts
+    // Warning: (ae-forgotten-export) The symbol "SavedObject" needs to be exported by the entry point index.d.ts
+    getSavedObject?: <T extends SavedObjectAttributes = SavedObjectAttributes>(type: string, id: string) => Promise<SavedObject<T>>;
+    inspectorAdapters: InspectorAdapters;
+    // Warning: (ae-forgotten-export) The symbol "ExecutionContextSearch" needs to be exported by the entry point index.d.ts
+    search?: ExecutionContextSearch;
+    types: Record<string, ExpressionType>;
+    variables: Record<string, unknown>;
+}
+
+// Warning: (ae-missing-release-tag) "ExecutionContract" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export class ExecutionContract<ExtraContext extends Record<string, unknown> = Record<string, unknown>, Input = unknown, Output = unknown, InspectorAdapters = unknown> {
+    constructor(execution: Execution<ExtraContext, Input, Output, InspectorAdapters>);
+    cancel: () => void;
+    // (undocumented)
+    protected readonly execution: Execution<ExtraContext, Input, Output, InspectorAdapters>;
+    getAst: () => ExpressionAstExpression;
+    getData: () => Promise<Output | ExpressionValueError>;
+    getExpression: () => string;
+    inspect: () => InspectorAdapters;
+    // (undocumented)
+    get isPending(): boolean;
+}
+
+// Warning: (ae-missing-release-tag) "ExecutionParams" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExecutionParams<ExtraContext extends Record<string, unknown> = Record<string, unknown>> {
+    // (undocumented)
+    ast?: ExpressionAstExpression;
+    // (undocumented)
+    context?: ExtraContext;
+    debug?: boolean;
+    // (undocumented)
+    executor: Executor<any>;
+    // (undocumented)
+    expression?: string;
+}
+
+// Warning: (ae-missing-release-tag) "ExecutionState" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExecutionState<Output = ExpressionValue> extends ExecutorState {
+    // (undocumented)
+    ast: ExpressionAstExpression;
+    error?: Error;
+    result?: Output;
+    state: 'not-started' | 'pending' | 'result' | 'error';
+}
+
+// Warning: (ae-missing-release-tag) "Executor" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export class Executor<Context extends Record<string, unknown> = Record<string, unknown>> {
+    constructor(state?: ExecutorState<Context>);
+    // (undocumented)
+    get context(): Record<string, unknown>;
+    // (undocumented)
+    createExecution<ExtraContext extends Record<string, unknown> = Record<string, unknown>, Input = unknown, Output = unknown>(ast: string | ExpressionAstExpression, context?: ExtraContext, { debug }?: ExpressionExecOptions): Execution<Context & ExtraContext, Input, Output>;
+    // (undocumented)
+    static createWithDefaults<Ctx extends Record<string, unknown> = Record<string, unknown>>(state?: ExecutorState<Ctx>): Executor<Ctx>;
+    // (undocumented)
+    extendContext(extraContext: Record<string, unknown>): void;
+    // (undocumented)
+    fork(): Executor<Context>;
+    // @deprecated (undocumented)
+    readonly functions: FunctionsRegistry;
+    // (undocumented)
+    getFunction(name: string): ExpressionFunction | undefined;
+    // (undocumented)
+    getFunctions(): Record<string, ExpressionFunction>;
+    // (undocumented)
+    getType(name: string): ExpressionType | undefined;
+    // (undocumented)
+    getTypes(): Record<string, ExpressionType>;
+    // (undocumented)
+    registerFunction(functionDefinition: AnyExpressionFunctionDefinition | (() => AnyExpressionFunctionDefinition)): void;
+    // (undocumented)
+    registerType(typeDefinition: AnyExpressionTypeDefinition | (() => AnyExpressionTypeDefinition)): void;
+    run<Input, Output, ExtraContext extends Record<string, unknown> = Record<string, unknown>>(ast: string | ExpressionAstExpression, input: Input, context?: ExtraContext): Promise<Output>;
+    // (undocumented)
+    readonly state: ExecutorContainer<Context>;
+    // @deprecated (undocumented)
+    readonly types: TypesRegistry;
+}
+
+// Warning: (ae-forgotten-export) The symbol "ExecutorPureTransitions" needs to be exported by the entry point index.d.ts
+// Warning: (ae-forgotten-export) The symbol "ExecutorPureSelectors" needs to be exported by the entry point index.d.ts
+// Warning: (ae-missing-release-tag) "ExecutorContainer" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExecutorContainer<Context extends Record<string, unknown> = Record<string, unknown>> = StateContainer<ExecutorState<Context>, ExecutorPureTransitions, ExecutorPureSelectors>;
+
+// Warning: (ae-missing-release-tag) "ExecutorState" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExecutorState<Context extends Record<string, unknown> = Record<string, unknown>> {
+    // (undocumented)
+    context: Context;
+    // (undocumented)
+    functions: Record<string, ExpressionFunction>;
+    // (undocumented)
+    types: Record<string, ExpressionType>;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionAstArgument" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionAstArgument = string | boolean | number | ExpressionAstExpression;
+
+// Warning: (ae-missing-release-tag) "ExpressionAstExpression" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExpressionAstExpression {
+    // (undocumented)
+    chain: ExpressionAstFunction[];
+    // (undocumented)
+    type: 'expression';
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionAstExpressionBuilder" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExpressionAstExpressionBuilder {
+    findFunction: <FnDef extends AnyExpressionFunctionDefinition = AnyExpressionFunctionDefinition>(fnName: InferFunctionDefinition<FnDef>['name']) => Array<ExpressionAstFunctionBuilder<FnDef>> | [];
+    functions: ExpressionAstFunctionBuilder[];
+    toAst: () => ExpressionAstExpression;
+    toString: () => string;
+    type: 'expression_builder';
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionAstFunction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExpressionAstFunction {
+    // (undocumented)
+    arguments: Record<string, ExpressionAstArgument[]>;
+    // Warning: (ae-forgotten-export) The symbol "ExpressionAstFunctionDebug" needs to be exported by the entry point index.d.ts
+    debug?: ExpressionAstFunctionDebug;
+    // (undocumented)
+    function: string;
+    // (undocumented)
+    type: 'function';
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionAstFunctionBuilder" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExpressionAstFunctionBuilder<FnDef extends AnyExpressionFunctionDefinition = AnyExpressionFunctionDefinition> {
+    // Warning: (ae-forgotten-export) The symbol "FunctionArgName" needs to be exported by the entry point index.d.ts
+    addArgument: <A extends FunctionArgName<FnDef>>(name: A, value: FunctionArgs<FnDef>[A] | ExpressionAstExpressionBuilder) => this;
+    // Warning: (ae-forgotten-export) The symbol "FunctionBuilderArguments" needs to be exported by the entry point index.d.ts
+    arguments: FunctionBuilderArguments<FnDef>;
+    getArgument: <A extends FunctionArgName<FnDef>>(name: A) => Array<FunctionArgs<FnDef>[A] | ExpressionAstExpressionBuilder> | undefined;
+    name: InferFunctionDefinition<FnDef>['name'];
+    // Warning: (ae-forgotten-export) The symbol "OptionalKeys" needs to be exported by the entry point index.d.ts
+    removeArgument: <A extends OptionalKeys<FunctionArgs<FnDef>>>(name: A) => this;
+    replaceArgument: <A extends FunctionArgName<FnDef>>(name: A, value: Array<FunctionArgs<FnDef>[A] | ExpressionAstExpressionBuilder>) => this;
+    toAst: () => ExpressionAstFunction;
+    toString: () => string;
+    type: 'expression_function_builder';
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionAstNode" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionAstNode = ExpressionAstExpression | ExpressionAstFunction | ExpressionAstArgument;
+
+// Warning: (ae-missing-release-tag) "ExpressionExecutor" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public @deprecated (undocumented)
+export interface ExpressionExecutor {
+    // Warning: (ae-forgotten-export) The symbol "ExpressionInterpreter" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    interpreter: ExpressionInterpreter;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionFunction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export class ExpressionFunction {
+    constructor(functionDefinition: AnyExpressionFunctionDefinition);
+    // (undocumented)
+    accepts: (type: string) => boolean;
+    aliases: string[];
+    args: Record<string, ExpressionFunctionParameter>;
+    fn: (input: ExpressionValue, params: Record<string, any>, handlers: object) => ExpressionValue;
+    help: string;
+    inputTypes: string[] | undefined;
+    name: string;
+    type: string;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionFunctionDefinition" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export interface ExpressionFunctionDefinition<Name extends string, Input, Arguments extends Record<string, any>, Output, Context extends ExecutionContext = ExecutionContext> {
+    aliases?: string[];
+    args: {
+        [key in keyof Arguments]: ArgumentType<Arguments[key]>;
+    };
+    // @deprecated (undocumented)
+    context?: {
+        types: AnyExpressionFunctionDefinition['inputTypes'];
+    };
+    fn(input: Input, args: Arguments, context: Context): Output;
+    help: string;
+    inputTypes?: Array<TypeToString<Input>>;
+    name: Name;
+    type?: TypeToString<UnwrapPromiseOrReturn<Output>>;
+}
+
+// @public
+export interface ExpressionFunctionDefinitions {
+    // Warning: (ae-forgotten-export) The symbol "ExpressionFunctionClog" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    clog: ExpressionFunctionClog;
+    // Warning: (ae-forgotten-export) The symbol "ExpressionFunctionFont" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    font: ExpressionFunctionFont;
+    // (undocumented)
+    kibana: ExpressionFunctionKibana;
+    // Warning: (ae-forgotten-export) The symbol "ExpressionFunctionKibanaContext" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    kibana_context: ExpressionFunctionKibanaContext;
+    // Warning: (ae-forgotten-export) The symbol "ExpressionFunctionTheme" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    theme: ExpressionFunctionTheme;
+    // Warning: (ae-forgotten-export) The symbol "ExpressionFunctionVar" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    var: ExpressionFunctionVar;
+    // Warning: (ae-forgotten-export) The symbol "ExpressionFunctionVarSet" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    var_set: ExpressionFunctionVarSet;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionFunctionKibana" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionFunctionKibana = ExpressionFunctionDefinition<'kibana', ExpressionValueSearchContext | null, object, ExpressionValueSearchContext>;
+
+// Warning: (ae-missing-release-tag) "ExpressionFunctionParameter" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export class ExpressionFunctionParameter {
+    constructor(name: string, arg: ArgumentType<any>);
+    // (undocumented)
+    accepts(type: string): boolean;
+    // (undocumented)
+    aliases: string[];
+    // (undocumented)
+    default: any;
+    // (undocumented)
+    help: string;
+    // (undocumented)
+    multi: boolean;
+    // (undocumented)
+    name: string;
+    // (undocumented)
+    options: any[];
+    // (undocumented)
+    required: boolean;
+    // (undocumented)
+    resolve: boolean;
+    // (undocumented)
+    types: string[];
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionImage" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExpressionImage {
+    // (undocumented)
+    dataurl: string;
+    // (undocumented)
+    mode: string;
+    // (undocumented)
+    type: 'image';
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionRenderDefinition" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExpressionRenderDefinition<Config = unknown> {
+    displayName: string;
+    help?: string;
+    name: string;
+    render: (domNode: HTMLElement, config: Config, handlers: IInterpreterRenderHandlers) => void | Promise<void>;
+    reuseDomNode: boolean;
+    validate?: () => undefined | Error;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionRenderer" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export class ExpressionRenderer<Config = unknown> {
+    constructor(config: ExpressionRenderDefinition<Config>);
+    // (undocumented)
+    readonly displayName: string;
+    // (undocumented)
+    readonly help: string;
+    // (undocumented)
+    readonly name: string;
+    // (undocumented)
+    readonly render: ExpressionRenderDefinition<Config>['render'];
+    // (undocumented)
+    readonly reuseDomNode: boolean;
+    // (undocumented)
+    readonly validate: () => void | Error;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionRendererComponent" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionRendererComponent = React.FC<ReactExpressionRendererProps>;
+
+// Warning: (ae-missing-release-tag) "ExpressionRendererEvent" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExpressionRendererEvent {
+    // (undocumented)
+    data: any;
+    // (undocumented)
+    name: string;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionRendererRegistry" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export class ExpressionRendererRegistry implements IRegistry<ExpressionRenderer> {
+    // (undocumented)
+    get(id: string): ExpressionRenderer | null;
+    // Warning: (ae-forgotten-export) The symbol "AnyExpressionRenderDefinition" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    register(definition: AnyExpressionRenderDefinition | (() => AnyExpressionRenderDefinition)): void;
+    // (undocumented)
+    toArray(): ExpressionRenderer[];
+    // (undocumented)
+    toJS(): Record<string, ExpressionRenderer>;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionRenderError" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExpressionRenderError extends Error {
+    // (undocumented)
+    type?: string;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionRenderHandler" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export class ExpressionRenderHandler {
+    // Warning: (ae-forgotten-export) The symbol "ExpressionRenderHandlerParams" needs to be exported by the entry point index.d.ts
+    constructor(element: HTMLElement, { onRenderError }?: Partial<ExpressionRenderHandlerParams>);
+    // (undocumented)
+    destroy: () => void;
+    // (undocumented)
+    events$: Observable<ExpressionRendererEvent>;
+    // (undocumented)
+    getElement: () => HTMLElement;
+    // (undocumented)
+    handleRenderError: (error: ExpressionRenderError) => void;
+    // (undocumented)
+    render$: Observable<number>;
+    // (undocumented)
+    render: (data: any, uiState?: any) => Promise<void>;
+    // Warning: (ae-forgotten-export) The symbol "UpdateValue" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    update$: Observable<UpdateValue | null>;
+    }
+
+// Warning: (ae-missing-release-tag) "ExpressionsPublicPlugin" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+class ExpressionsPublicPlugin implements Plugin_2<ExpressionsSetup, ExpressionsStart> {
+    constructor(initializerContext: PluginInitializerContext_2);
+    // (undocumented)
+    setup(core: CoreSetup): ExpressionsSetup;
+    // (undocumented)
+    start(core: CoreStart): ExpressionsStart;
+    // (undocumented)
+    stop(): void;
+}
+
+export { ExpressionsPublicPlugin }
+
+export { ExpressionsPublicPlugin as Plugin }
+
+// Warning: (ae-missing-release-tag) "ExpressionsService" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export class ExpressionsService {
+    // Warning: (ae-forgotten-export) The symbol "ExpressionServiceParams" needs to be exported by the entry point index.d.ts
+    constructor({ executor, renderers, }?: ExpressionServiceParams);
+    // (undocumented)
+    readonly execute: ExpressionsServiceStart['execute'];
+    // (undocumented)
+    readonly executor: Executor;
+    // (undocumented)
+    readonly fork: () => ExpressionsService;
+    // (undocumented)
+    readonly getFunction: ExpressionsServiceStart['getFunction'];
+    readonly getFunctions: () => ReturnType<Executor['getFunctions']>;
+    // (undocumented)
+    readonly getRenderer: ExpressionsServiceStart['getRenderer'];
+    readonly getRenderers: () => ReturnType<ExpressionRendererRegistry['toJS']>;
+    // (undocumented)
+    readonly getType: ExpressionsServiceStart['getType'];
+    readonly getTypes: () => ReturnType<Executor['getTypes']>;
+    readonly registerFunction: (functionDefinition: AnyExpressionFunctionDefinition | (() => AnyExpressionFunctionDefinition)) => void;
+    // (undocumented)
+    readonly registerRenderer: (definition: AnyExpressionRenderDefinition | (() => AnyExpressionRenderDefinition)) => void;
+    // (undocumented)
+    readonly registerType: (typeDefinition: AnyExpressionTypeDefinition | (() => AnyExpressionTypeDefinition)) => void;
+    // (undocumented)
+    readonly renderers: ExpressionRendererRegistry;
+    // (undocumented)
+    readonly run: ExpressionsServiceStart['run'];
+    setup(): ExpressionsServiceSetup;
+    start(): ExpressionsServiceStart;
+    // (undocumented)
+    stop(): void;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionsServiceSetup" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type ExpressionsServiceSetup = Pick<ExpressionsService, 'getFunction' | 'getFunctions' | 'getRenderer' | 'getRenderers' | 'getType' | 'getTypes' | 'registerFunction' | 'registerRenderer' | 'registerType' | 'run' | 'fork'>;
+
+// Warning: (ae-missing-release-tag) "ExpressionsServiceStart" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export interface ExpressionsServiceStart {
+    execute: <Input = unknown, Output = unknown, ExtraContext extends Record<string, unknown> = Record<string, unknown>>(ast: string | ExpressionAstExpression, input: Input, context?: ExtraContext) => ExecutionContract<ExtraContext, Input, Output>;
+    fork: () => ExpressionsService;
+    getFunction: (name: string) => ReturnType<Executor['getFunction']>;
+    getRenderer: (name: string) => ReturnType<ExpressionRendererRegistry['get']>;
+    getType: (name: string) => ReturnType<Executor['getType']>;
+    run: <Input, Output, ExtraContext extends Record<string, unknown> = Record<string, unknown>>(ast: string | ExpressionAstExpression, input: Input, context?: ExtraContext) => Promise<Output>;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionsSetup" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type ExpressionsSetup = ExpressionsServiceSetup;
+
+// Warning: (ae-missing-release-tag) "ExpressionsStart" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+// Warning: (ae-unresolved-link) The @link reference could not be resolved: The package "kibana" does not have an export "ExpressionServiceStart"
+//
+// @public
+export interface ExpressionsStart extends ExpressionsServiceStart {
+    // Warning: (ae-forgotten-export) The symbol "ExpressionLoader" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    ExpressionLoader: typeof ExpressionLoader;
+    // (undocumented)
+    ExpressionRenderHandler: typeof ExpressionRenderHandler;
+    // Warning: (ae-forgotten-export) The symbol "IExpressionLoader" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    loader: IExpressionLoader;
+    // (undocumented)
+    ReactExpressionRenderer: typeof ReactExpressionRenderer;
+    // Warning: (ae-forgotten-export) The symbol "render" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    render: typeof render;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionType" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export class ExpressionType {
+    constructor(definition: AnyExpressionTypeDefinition);
+    // (undocumented)
+    castsFrom: (value: ExpressionValue) => boolean;
+    // (undocumented)
+    castsTo: (value: ExpressionValue) => boolean;
+    // (undocumented)
+    create: unknown;
+    // (undocumented)
+    deserialize?: (serialized: any) => ExpressionValue;
+    // (undocumented)
+    from: (value: ExpressionValue, types: Record<string, ExpressionType>) => any;
+    // (undocumented)
+    getFromFn: (typeName: string) => undefined | ExpressionValueConverter<ExpressionValue, ExpressionValue>;
+    // (undocumented)
+    getToFn: (typeName: string) => undefined | ExpressionValueConverter<ExpressionValue, ExpressionValue>;
+    help: string;
+    // (undocumented)
+    name: string;
+    serialize?: (value: ExpressionValue) => any;
+    // (undocumented)
+    to: (value: ExpressionValue, toTypeName: string, types: Record<string, ExpressionType>) => any;
+    validate: (type: any) => void | Error;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionTypeDefinition" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export interface ExpressionTypeDefinition<Name extends string, Value extends ExpressionValueUnboxed | ExpressionValueBoxed, SerializedType = undefined> {
+    // (undocumented)
+    deserialize?: (type: SerializedType) => Value;
+    // (undocumented)
+    from?: {
+        [type: string]: ExpressionValueConverter<any, Value>;
+    };
+    // (undocumented)
+    help?: string;
+    // (undocumented)
+    name: Name;
+    // (undocumented)
+    serialize?: (type: Value) => SerializedType;
+    // (undocumented)
+    to?: {
+        [type: string]: ExpressionValueConverter<Value, any>;
+    };
+    // (undocumented)
+    validate?: (type: any) => void | Error;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionTypeStyle" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export interface ExpressionTypeStyle {
+    // (undocumented)
+    css: string;
+    // Warning: (ae-forgotten-export) The symbol "CSSStyle" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    spec: CSSStyle;
+    // (undocumented)
+    type: 'style';
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionValue" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionValue = ExpressionValueUnboxed | ExpressionValueBoxed;
+
+// Warning: (ae-missing-release-tag) "ExpressionValueBoxed" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionValueBoxed<Type extends string = string, Value extends object = object> = {
+    type: Type;
+} & Value;
+
+// Warning: (ae-missing-release-tag) "ExpressionValueConverter" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionValueConverter<I extends ExpressionValue, O extends ExpressionValue> = (input: I, availableTypes: Record<string, any>) => O;
+
+// Warning: (ae-missing-release-tag) "ExpressionValueError" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionValueError = ExpressionValueBoxed<'error', {
+    error: {
+        message: string;
+        type?: string;
+        name?: string;
+        stack?: string;
+        original?: Error;
+    };
+    info?: unknown;
+}>;
+
+// Warning: (ae-missing-release-tag) "ExpressionValueFilter" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type ExpressionValueFilter = ExpressionValueBoxed<'filter', {
+    filterType?: string;
+    value?: string;
+    column?: string;
+    and: ExpressionValueFilter[];
+    to?: string;
+    from?: string;
+    query?: string | null;
+}>;
+
+// Warning: (ae-missing-release-tag) "ExpressionValueNum" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionValueNum = ExpressionValueBoxed<'num', {
+    value: number;
+}>;
+
+// Warning: (ae-forgotten-export) The symbol "name" needs to be exported by the entry point index.d.ts
+// Warning: (ae-missing-release-tag) "ExpressionValueRender" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+type ExpressionValueRender<T> = ExpressionValueBoxed<typeof name_2, {
+    as: string;
+    value: T;
+}>;
+
+export { ExpressionValueRender }
+
+export { ExpressionValueRender as Render }
+
+// Warning: (ae-missing-release-tag) "ExpressionValueSearchContext" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionValueSearchContext = ExpressionValueBoxed<'kibana_context', ExecutionContextSearch>;
+
+// Warning: (ae-missing-release-tag) "ExpressionValueUnboxed" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionValueUnboxed = any;
+
+// Warning: (ae-missing-release-tag) "Font" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export interface Font {
+    // (undocumented)
+    label: FontLabel;
+    // (undocumented)
+    value: FontValue;
+}
+
+// Warning: (ae-forgotten-export) The symbol "fonts" needs to be exported by the entry point index.d.ts
+// Warning: (ae-missing-release-tag) "FontLabel" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type FontLabel = typeof fonts[number]['label'];
+
+// Warning: (ae-missing-release-tag) "FontStyle" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export enum FontStyle {
+    // (undocumented)
+    ITALIC = "italic",
+    // (undocumented)
+    NORMAL = "normal"
+}
+
+// Warning: (ae-missing-release-tag) "FontValue" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type FontValue = typeof fonts[number]['value'];
+
+// Warning: (ae-missing-release-tag) "FontWeight" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export enum FontWeight {
+    // (undocumented)
+    BOLD = "bold",
+    // (undocumented)
+    BOLDER = "bolder",
+    // (undocumented)
+    EIGHT = "800",
+    // (undocumented)
+    FIVE = "500",
+    // (undocumented)
+    FOUR = "400",
+    // (undocumented)
+    LIGHTER = "lighter",
+    // (undocumented)
+    NINE = "900",
+    // (undocumented)
+    NORMAL = "normal",
+    // (undocumented)
+    ONE = "100",
+    // (undocumented)
+    SEVEN = "700",
+    // (undocumented)
+    SIX = "600",
+    // (undocumented)
+    THREE = "300",
+    // (undocumented)
+    TWO = "200"
+}
+
+// Warning: (ae-missing-release-tag) "format" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export function format<T extends ExpressionAstExpression | ExpressionAstArgument>(ast: T, type: T extends ExpressionAstExpression ? 'expression' : 'argument'): string;
+
+// Warning: (ae-missing-release-tag) "formatExpression" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export function formatExpression(ast: ExpressionAstExpression): string;
+
+// Warning: (ae-missing-release-tag) "FunctionsRegistry" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export class FunctionsRegistry implements IRegistry<ExpressionFunction> {
+    constructor(executor: Executor<any>);
+    // (undocumented)
+    get(id: string): ExpressionFunction | null;
+    // (undocumented)
+    register(functionDefinition: AnyExpressionFunctionDefinition | (() => AnyExpressionFunctionDefinition)): void;
+    // (undocumented)
+    toArray(): ExpressionFunction[];
+    // (undocumented)
+    toJS(): Record<string, ExpressionFunction>;
+}
+
+// Warning: (ae-missing-release-tag) "IExpressionLoaderParams" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface IExpressionLoaderParams {
+    // (undocumented)
+    context?: ExpressionValue;
+    // (undocumented)
+    customFunctions?: [];
+    // (undocumented)
+    customRenderers?: [];
+    // (undocumented)
+    disableCaching?: boolean;
+    // (undocumented)
+    inspectorAdapters?: Adapters;
+    // Warning: (ae-forgotten-export) The symbol "RenderErrorHandlerFnType" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    onRenderError?: RenderErrorHandlerFnType;
+    // (undocumented)
+    searchContext?: ExecutionContextSearch;
+    // (undocumented)
+    uiState?: unknown;
+    // (undocumented)
+    variables?: Record<string, any>;
+}
+
+// Warning: (ae-missing-release-tag) "IInterpreterRenderHandlers" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface IInterpreterRenderHandlers {
+    done: () => void;
+    // (undocumented)
+    event: (event: any) => void;
+    // (undocumented)
+    onDestroy: (fn: () => void) => void;
+    // (undocumented)
+    reload: () => void;
+    // (undocumented)
+    update: (params: any) => void;
+}
+
+// Warning: (ae-missing-release-tag) "InterpreterErrorType" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public @deprecated (undocumented)
+export type InterpreterErrorType = ExpressionValueError;
+
+// Warning: (ae-missing-release-tag) "IRegistry" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface IRegistry<T> {
+    // (undocumented)
+    get(id: string): T | null;
+    // (undocumented)
+    toArray(): T[];
+    // (undocumented)
+    toJS(): Record<string, T>;
+}
+
+// Warning: (ae-missing-release-tag) "isExpressionAstBuilder" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export function isExpressionAstBuilder(val: any): val is ExpressionAstExpressionBuilder;
+
+// Warning: (ae-missing-release-tag) "KIBANA_CONTEXT_NAME" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type KIBANA_CONTEXT_NAME = 'kibana_context';
+
+// Warning: (ae-missing-release-tag) "KibanaContext" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type KibanaContext = ExpressionValueSearchContext;
+
+// Warning: (ae-missing-release-tag) "KibanaDatatable" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface KibanaDatatable {
+    // (undocumented)
+    columns: KibanaDatatableColumn[];
+    // (undocumented)
+    rows: KibanaDatatableRow[];
+    // Warning: (ae-forgotten-export) The symbol "name" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    type: typeof name_3;
+}
+
+// Warning: (ae-missing-release-tag) "KibanaDatatableColumn" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface KibanaDatatableColumn {
+    // (undocumented)
+    formatHint?: SerializedFieldFormat;
+    // (undocumented)
+    id: string;
+    // (undocumented)
+    meta?: KibanaDatatableColumnMeta;
+    // (undocumented)
+    name: string;
+}
+
+// Warning: (ae-missing-release-tag) "KibanaDatatableColumnMeta" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface KibanaDatatableColumnMeta {
+    // (undocumented)
+    aggConfigParams?: Record<string, any>;
+    // (undocumented)
+    indexPatternId?: string;
+    // (undocumented)
+    type: string;
+}
+
+// Warning: (ae-missing-release-tag) "KibanaDatatableRow" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface KibanaDatatableRow {
+    // (undocumented)
+    [key: string]: unknown;
+}
+
+// Warning: (ae-missing-release-tag) "KnownTypeToString" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type KnownTypeToString<T> = T extends string ? 'string' : T extends boolean ? 'boolean' : T extends number ? 'number' : T extends null ? 'null' : T extends {
+    type: string;
+} ? T['type'] : never;
+
+// Warning: (ae-missing-release-tag) "Overflow" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export enum Overflow {
+    // (undocumented)
+    AUTO = "auto",
+    // (undocumented)
+    HIDDEN = "hidden",
+    // (undocumented)
+    SCROLL = "scroll",
+    // (undocumented)
+    VISIBLE = "visible"
+}
+
+// Warning: (ae-missing-release-tag) "parse" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export function parse<E extends string, S extends 'expression' | 'argument'>(expression: E, startRule: S): S extends 'expression' ? ExpressionAstExpression : ExpressionAstArgument;
+
+// Warning: (ae-missing-release-tag) "parseExpression" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export function parseExpression(expression: string): ExpressionAstExpression;
+
+// Warning: (ae-forgotten-export) The symbol "PluginInitializerContext" needs to be exported by the entry point index.d.ts
+// Warning: (ae-missing-release-tag) "plugin" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export function plugin(initializerContext: PluginInitializerContext): ExpressionsPublicPlugin;
+
+// Warning: (ae-missing-release-tag) "PointSeries" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type PointSeries = ExpressionValueBoxed<'pointseries', {
+    columns: PointSeriesColumns;
+    rows: PointSeriesRow[];
+}>;
+
+// Warning: (ae-missing-release-tag) "PointSeriesColumn" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export interface PointSeriesColumn {
+    // (undocumented)
+    expression: string;
+    // (undocumented)
+    role: 'measure' | 'dimension';
+    // (undocumented)
+    type: 'number' | 'string';
+}
+
+// Warning: (ae-missing-release-tag) "PointSeriesColumnName" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type PointSeriesColumnName = 'x' | 'y' | 'color' | 'size' | 'text';
+
+// Warning: (ae-missing-release-tag) "PointSeriesColumns" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type PointSeriesColumns = Record<PointSeriesColumnName, PointSeriesColumn> | {};
+
+// Warning: (ae-missing-release-tag) "PointSeriesRow" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type PointSeriesRow = Record<string, any>;
+
+// Warning: (ae-missing-release-tag) "Range" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface Range {
+    // (undocumented)
+    from: number;
+    // (undocumented)
+    to: number;
+    // Warning: (ae-forgotten-export) The symbol "name" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    type: typeof name_4;
+}
+
+// Warning: (ae-missing-release-tag) "ReactExpressionRenderer" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export const ReactExpressionRenderer: ({ className, dataAttrs, padding, renderError, expression, onEvent, reload$, ...expressionLoaderOptions }: ReactExpressionRendererProps) => JSX.Element;
+
+// Warning: (ae-missing-release-tag) "ReactExpressionRendererProps" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ReactExpressionRendererProps extends IExpressionLoaderParams {
+    // (undocumented)
+    className?: string;
+    // (undocumented)
+    dataAttrs?: string[];
+    // (undocumented)
+    expression: string | ExpressionAstExpression;
+    // (undocumented)
+    onEvent?: (event: ExpressionRendererEvent) => void;
+    // (undocumented)
+    padding?: 'xs' | 's' | 'm' | 'l' | 'xl';
+    reload$?: Observable<unknown>;
+    // (undocumented)
+    renderError?: (error?: string | null) => React.ReactElement | React.ReactElement[];
+}
+
+// Warning: (ae-missing-release-tag) "ReactExpressionRendererType" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ReactExpressionRendererType = React.ComponentType<ReactExpressionRendererProps>;
+
+// Warning: (ae-missing-release-tag) "SerializedDatatable" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface SerializedDatatable extends Datatable {
+    // (undocumented)
+    rows: string[][];
+}
+
+// Warning: (ae-missing-release-tag) "SerializedFieldFormat" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export interface SerializedFieldFormat<TParams = Record<string, any>> {
+    // (undocumented)
+    id?: string;
+    // (undocumented)
+    params?: TParams;
+}
+
+// Warning: (ae-missing-release-tag) "Style" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type Style = ExpressionTypeStyle;
+
+// Warning: (ae-missing-release-tag) "TextAlignment" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export enum TextAlignment {
+    // (undocumented)
+    CENTER = "center",
+    // (undocumented)
+    JUSTIFY = "justify",
+    // (undocumented)
+    LEFT = "left",
+    // (undocumented)
+    RIGHT = "right"
+}
+
+// Warning: (ae-missing-release-tag) "TextDecoration" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export enum TextDecoration {
+    // (undocumented)
+    NONE = "none",
+    // (undocumented)
+    UNDERLINE = "underline"
+}
+
+// Warning: (ae-missing-release-tag) "TypesRegistry" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export class TypesRegistry implements IRegistry<ExpressionType> {
+    constructor(executor: Executor<any>);
+    // (undocumented)
+    get(id: string): ExpressionType | null;
+    // (undocumented)
+    register(typeDefinition: AnyExpressionTypeDefinition | (() => AnyExpressionTypeDefinition)): void;
+    // (undocumented)
+    toArray(): ExpressionType[];
+    // (undocumented)
+    toJS(): Record<string, ExpressionType>;
+}
+
+// Warning: (ae-missing-release-tag) "TypeString" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type TypeString<T> = KnownTypeToString<UnwrapPromiseOrReturn<T>>;
+
+// Warning: (ae-missing-release-tag) "TypeToString" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type TypeToString<T> = KnownTypeToString<T> | UnmappedTypeStrings;
+
+// Warning: (ae-missing-release-tag) "UnmappedTypeStrings" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type UnmappedTypeStrings = 'date' | 'filter';
+
+
+// (No @packageDocumentation comment for this package)
+
+```
diff --git a/src/plugins/expressions/server/mocks.ts b/src/plugins/expressions/server/mocks.ts
index 0512789d76ab0..0beb4750c0d10 100644
--- a/src/plugins/expressions/server/mocks.ts
+++ b/src/plugins/expressions/server/mocks.ts
@@ -46,11 +46,8 @@ const createStartContract = (): Start => {
     execute: jest.fn(),
     fork: jest.fn(),
     getFunction: jest.fn(),
-    getFunctions: jest.fn(),
     getRenderer: jest.fn(),
-    getRenderers: jest.fn(),
     getType: jest.fn(),
-    getTypes: jest.fn(),
     run: jest.fn(),
   };
 
diff --git a/src/plugins/expressions/server/server.api.md b/src/plugins/expressions/server/server.api.md
new file mode 100644
index 0000000000000..6ac251ea005b4
--- /dev/null
+++ b/src/plugins/expressions/server/server.api.md
@@ -0,0 +1,968 @@
+## API Report File for "kibana"
+
+> Do not edit this file. It is a report generated by [API Extractor](https://api-extractor.com/).
+
+```ts
+
+import { CoreSetup } from 'src/core/server';
+import { CoreStart } from 'src/core/server';
+import { Ensure } from '@kbn/utility-types';
+import { EventEmitter } from 'events';
+import { Observable } from 'rxjs';
+import { Plugin as Plugin_2 } from 'src/core/server';
+import { PluginInitializerContext } from 'src/core/server';
+import { UnwrapPromiseOrReturn } from '@kbn/utility-types';
+
+// Warning: (ae-missing-release-tag) "AnyExpressionFunctionDefinition" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type AnyExpressionFunctionDefinition = ExpressionFunctionDefinition<string, any, Record<string, any>, any>;
+
+// Warning: (ae-missing-release-tag) "AnyExpressionTypeDefinition" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type AnyExpressionTypeDefinition = ExpressionTypeDefinition<any, any, any>;
+
+// Warning: (ae-forgotten-export) The symbol "SingleArgumentType" needs to be exported by the entry point index.d.ts
+// Warning: (ae-forgotten-export) The symbol "MultipleArgumentType" needs to be exported by the entry point index.d.ts
+// Warning: (ae-forgotten-export) The symbol "UnresolvedSingleArgumentType" needs to be exported by the entry point index.d.ts
+// Warning: (ae-forgotten-export) The symbol "UnresolvedMultipleArgumentType" needs to be exported by the entry point index.d.ts
+// Warning: (ae-missing-release-tag) "ArgumentType" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type ArgumentType<T> = SingleArgumentType<T> | MultipleArgumentType<T> | UnresolvedSingleArgumentType<T> | UnresolvedMultipleArgumentType<T>;
+
+// Warning: (ae-missing-release-tag) "buildExpression" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export function buildExpression(initialState?: ExpressionAstFunctionBuilder[] | ExpressionAstExpression | string): ExpressionAstExpressionBuilder;
+
+// Warning: (ae-forgotten-export) The symbol "InferFunctionDefinition" needs to be exported by the entry point index.d.ts
+// Warning: (ae-forgotten-export) The symbol "FunctionArgs" needs to be exported by the entry point index.d.ts
+// Warning: (ae-missing-release-tag) "buildExpressionFunction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export function buildExpressionFunction<FnDef extends AnyExpressionFunctionDefinition = AnyExpressionFunctionDefinition>(fnName: InferFunctionDefinition<FnDef>['name'],
+initialArgs: {
+    [K in keyof FunctionArgs<FnDef>]: FunctionArgs<FnDef>[K] | ExpressionAstExpressionBuilder | ExpressionAstExpressionBuilder[];
+}): ExpressionAstFunctionBuilder<FnDef>;
+
+// Warning: (ae-missing-release-tag) "Datatable" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export interface Datatable {
+    // (undocumented)
+    columns: DatatableColumn[];
+    // (undocumented)
+    rows: DatatableRow[];
+    // Warning: (ae-forgotten-export) The symbol "name" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    type: typeof name;
+}
+
+// Warning: (ae-missing-release-tag) "DatatableColumn" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export interface DatatableColumn {
+    // (undocumented)
+    id: string;
+    // Warning: (ae-forgotten-export) The symbol "DatatableColumnMeta" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    meta: DatatableColumnMeta;
+    // (undocumented)
+    name: string;
+}
+
+// Warning: (ae-missing-release-tag) "DatatableColumnType" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type DatatableColumnType = 'string' | 'number' | 'boolean' | 'date' | 'null';
+
+// Warning: (ae-missing-release-tag) "DatatableRow" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type DatatableRow = Record<string, any>;
+
+// Warning: (ae-forgotten-export) The symbol "Adapters" needs to be exported by the entry point index.d.ts
+// Warning: (ae-forgotten-export) The symbol "DefaultInspectorAdapters" needs to be exported by the entry point index.d.ts
+// Warning: (ae-missing-release-tag) "Execution" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export class Execution<ExtraContext extends Record<string, unknown> = Record<string, unknown>, Input = unknown, Output = unknown, InspectorAdapters extends Adapters = ExtraContext['inspectorAdapters'] extends object ? ExtraContext['inspectorAdapters'] : DefaultInspectorAdapters> {
+    constructor(params: ExecutionParams<ExtraContext>);
+    cancel(): void;
+    // (undocumented)
+    cast(value: any, toTypeNames?: string[]): any;
+    readonly context: ExecutionContext<Input, InspectorAdapters> & ExtraContext;
+    // Warning: (ae-forgotten-export) The symbol "ExecutionContract" needs to be exported by the entry point index.d.ts
+    readonly contract: ExecutionContract<ExtraContext, Input, Output, InspectorAdapters>;
+    // (undocumented)
+    readonly expression: string;
+    input: Input;
+    // (undocumented)
+    get inspectorAdapters(): InspectorAdapters;
+    // Warning: (ae-forgotten-export) The symbol "ExpressionExecOptions" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    interpret<T>(ast: ExpressionAstNode, input: T, options?: ExpressionExecOptions): Promise<unknown>;
+    // (undocumented)
+    invokeChain(chainArr: ExpressionAstFunction[], input: unknown): Promise<any>;
+    // (undocumented)
+    invokeFunction(fn: ExpressionFunction, input: unknown, args: Record<string, unknown>): Promise<any>;
+    // (undocumented)
+    readonly params: ExecutionParams<ExtraContext>;
+    // (undocumented)
+    resolveArgs(fnDef: ExpressionFunction, input: unknown, argAsts: any): Promise<any>;
+    // (undocumented)
+    get result(): Promise<Output | ExpressionValueError>;
+    start(input?: Input): void;
+    readonly state: ExecutionContainer<Output | ExpressionValueError>;
+}
+
+// Warning: (ae-forgotten-export) The symbol "StateContainer" needs to be exported by the entry point index.d.ts
+// Warning: (ae-forgotten-export) The symbol "ExecutionPureTransitions" needs to be exported by the entry point index.d.ts
+// Warning: (ae-missing-release-tag) "ExecutionContainer" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExecutionContainer<Output = ExpressionValue> = StateContainer<ExecutionState<Output>, ExecutionPureTransitions<Output>>;
+
+// Warning: (ae-missing-release-tag) "ExecutionContext" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export interface ExecutionContext<Input = unknown, InspectorAdapters extends Adapters = Adapters> {
+    abortSignal: AbortSignal;
+    getInitialInput: () => Input;
+    // Warning: (ae-forgotten-export) The symbol "SavedObjectAttributes" needs to be exported by the entry point index.d.ts
+    // Warning: (ae-forgotten-export) The symbol "SavedObject" needs to be exported by the entry point index.d.ts
+    getSavedObject?: <T extends SavedObjectAttributes = SavedObjectAttributes>(type: string, id: string) => Promise<SavedObject<T>>;
+    inspectorAdapters: InspectorAdapters;
+    // Warning: (ae-forgotten-export) The symbol "ExecutionContextSearch" needs to be exported by the entry point index.d.ts
+    search?: ExecutionContextSearch;
+    types: Record<string, ExpressionType>;
+    variables: Record<string, unknown>;
+}
+
+// Warning: (ae-missing-release-tag) "ExecutionParams" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExecutionParams<ExtraContext extends Record<string, unknown> = Record<string, unknown>> {
+    // (undocumented)
+    ast?: ExpressionAstExpression;
+    // (undocumented)
+    context?: ExtraContext;
+    debug?: boolean;
+    // (undocumented)
+    executor: Executor<any>;
+    // (undocumented)
+    expression?: string;
+}
+
+// Warning: (ae-missing-release-tag) "ExecutionState" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExecutionState<Output = ExpressionValue> extends ExecutorState {
+    // (undocumented)
+    ast: ExpressionAstExpression;
+    error?: Error;
+    result?: Output;
+    state: 'not-started' | 'pending' | 'result' | 'error';
+}
+
+// Warning: (ae-missing-release-tag) "Executor" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export class Executor<Context extends Record<string, unknown> = Record<string, unknown>> {
+    constructor(state?: ExecutorState<Context>);
+    // (undocumented)
+    get context(): Record<string, unknown>;
+    // (undocumented)
+    createExecution<ExtraContext extends Record<string, unknown> = Record<string, unknown>, Input = unknown, Output = unknown>(ast: string | ExpressionAstExpression, context?: ExtraContext, { debug }?: ExpressionExecOptions): Execution<Context & ExtraContext, Input, Output>;
+    // (undocumented)
+    static createWithDefaults<Ctx extends Record<string, unknown> = Record<string, unknown>>(state?: ExecutorState<Ctx>): Executor<Ctx>;
+    // (undocumented)
+    extendContext(extraContext: Record<string, unknown>): void;
+    // (undocumented)
+    fork(): Executor<Context>;
+    // @deprecated (undocumented)
+    readonly functions: FunctionsRegistry;
+    // (undocumented)
+    getFunction(name: string): ExpressionFunction | undefined;
+    // (undocumented)
+    getFunctions(): Record<string, ExpressionFunction>;
+    // (undocumented)
+    getType(name: string): ExpressionType | undefined;
+    // (undocumented)
+    getTypes(): Record<string, ExpressionType>;
+    // (undocumented)
+    registerFunction(functionDefinition: AnyExpressionFunctionDefinition | (() => AnyExpressionFunctionDefinition)): void;
+    // (undocumented)
+    registerType(typeDefinition: AnyExpressionTypeDefinition | (() => AnyExpressionTypeDefinition)): void;
+    run<Input, Output, ExtraContext extends Record<string, unknown> = Record<string, unknown>>(ast: string | ExpressionAstExpression, input: Input, context?: ExtraContext): Promise<Output>;
+    // (undocumented)
+    readonly state: ExecutorContainer<Context>;
+    // @deprecated (undocumented)
+    readonly types: TypesRegistry;
+}
+
+// Warning: (ae-forgotten-export) The symbol "ExecutorPureTransitions" needs to be exported by the entry point index.d.ts
+// Warning: (ae-forgotten-export) The symbol "ExecutorPureSelectors" needs to be exported by the entry point index.d.ts
+// Warning: (ae-missing-release-tag) "ExecutorContainer" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExecutorContainer<Context extends Record<string, unknown> = Record<string, unknown>> = StateContainer<ExecutorState<Context>, ExecutorPureTransitions, ExecutorPureSelectors>;
+
+// Warning: (ae-missing-release-tag) "ExecutorState" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExecutorState<Context extends Record<string, unknown> = Record<string, unknown>> {
+    // (undocumented)
+    context: Context;
+    // (undocumented)
+    functions: Record<string, ExpressionFunction>;
+    // (undocumented)
+    types: Record<string, ExpressionType>;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionAstArgument" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionAstArgument = string | boolean | number | ExpressionAstExpression;
+
+// Warning: (ae-missing-release-tag) "ExpressionAstExpression" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExpressionAstExpression {
+    // (undocumented)
+    chain: ExpressionAstFunction[];
+    // (undocumented)
+    type: 'expression';
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionAstExpressionBuilder" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExpressionAstExpressionBuilder {
+    findFunction: <FnDef extends AnyExpressionFunctionDefinition = AnyExpressionFunctionDefinition>(fnName: InferFunctionDefinition<FnDef>['name']) => Array<ExpressionAstFunctionBuilder<FnDef>> | [];
+    functions: ExpressionAstFunctionBuilder[];
+    toAst: () => ExpressionAstExpression;
+    toString: () => string;
+    type: 'expression_builder';
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionAstFunction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExpressionAstFunction {
+    // (undocumented)
+    arguments: Record<string, ExpressionAstArgument[]>;
+    // Warning: (ae-forgotten-export) The symbol "ExpressionAstFunctionDebug" needs to be exported by the entry point index.d.ts
+    debug?: ExpressionAstFunctionDebug;
+    // (undocumented)
+    function: string;
+    // (undocumented)
+    type: 'function';
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionAstFunctionBuilder" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExpressionAstFunctionBuilder<FnDef extends AnyExpressionFunctionDefinition = AnyExpressionFunctionDefinition> {
+    // Warning: (ae-forgotten-export) The symbol "FunctionArgName" needs to be exported by the entry point index.d.ts
+    addArgument: <A extends FunctionArgName<FnDef>>(name: A, value: FunctionArgs<FnDef>[A] | ExpressionAstExpressionBuilder) => this;
+    // Warning: (ae-forgotten-export) The symbol "FunctionBuilderArguments" needs to be exported by the entry point index.d.ts
+    arguments: FunctionBuilderArguments<FnDef>;
+    getArgument: <A extends FunctionArgName<FnDef>>(name: A) => Array<FunctionArgs<FnDef>[A] | ExpressionAstExpressionBuilder> | undefined;
+    name: InferFunctionDefinition<FnDef>['name'];
+    // Warning: (ae-forgotten-export) The symbol "OptionalKeys" needs to be exported by the entry point index.d.ts
+    removeArgument: <A extends OptionalKeys<FunctionArgs<FnDef>>>(name: A) => this;
+    replaceArgument: <A extends FunctionArgName<FnDef>>(name: A, value: Array<FunctionArgs<FnDef>[A] | ExpressionAstExpressionBuilder>) => this;
+    toAst: () => ExpressionAstFunction;
+    toString: () => string;
+    type: 'expression_function_builder';
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionAstNode" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionAstNode = ExpressionAstExpression | ExpressionAstFunction | ExpressionAstArgument;
+
+// Warning: (ae-missing-release-tag) "ExpressionFunction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export class ExpressionFunction {
+    constructor(functionDefinition: AnyExpressionFunctionDefinition);
+    // (undocumented)
+    accepts: (type: string) => boolean;
+    aliases: string[];
+    args: Record<string, ExpressionFunctionParameter>;
+    fn: (input: ExpressionValue, params: Record<string, any>, handlers: object) => ExpressionValue;
+    help: string;
+    inputTypes: string[] | undefined;
+    name: string;
+    type: string;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionFunctionDefinition" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export interface ExpressionFunctionDefinition<Name extends string, Input, Arguments extends Record<string, any>, Output, Context extends ExecutionContext = ExecutionContext> {
+    aliases?: string[];
+    args: {
+        [key in keyof Arguments]: ArgumentType<Arguments[key]>;
+    };
+    // @deprecated (undocumented)
+    context?: {
+        types: AnyExpressionFunctionDefinition['inputTypes'];
+    };
+    fn(input: Input, args: Arguments, context: Context): Output;
+    help: string;
+    inputTypes?: Array<TypeToString<Input>>;
+    name: Name;
+    type?: TypeToString<UnwrapPromiseOrReturn<Output>>;
+}
+
+// @public
+export interface ExpressionFunctionDefinitions {
+    // Warning: (ae-forgotten-export) The symbol "ExpressionFunctionClog" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    clog: ExpressionFunctionClog;
+    // Warning: (ae-forgotten-export) The symbol "ExpressionFunctionFont" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    font: ExpressionFunctionFont;
+    // (undocumented)
+    kibana: ExpressionFunctionKibana;
+    // Warning: (ae-forgotten-export) The symbol "ExpressionFunctionKibanaContext" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    kibana_context: ExpressionFunctionKibanaContext;
+    // Warning: (ae-forgotten-export) The symbol "ExpressionFunctionTheme" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    theme: ExpressionFunctionTheme;
+    // Warning: (ae-forgotten-export) The symbol "ExpressionFunctionVar" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    var: ExpressionFunctionVar;
+    // Warning: (ae-forgotten-export) The symbol "ExpressionFunctionVarSet" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    var_set: ExpressionFunctionVarSet;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionFunctionKibana" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionFunctionKibana = ExpressionFunctionDefinition<'kibana', ExpressionValueSearchContext | null, object, ExpressionValueSearchContext>;
+
+// Warning: (ae-missing-release-tag) "ExpressionFunctionParameter" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export class ExpressionFunctionParameter {
+    constructor(name: string, arg: ArgumentType<any>);
+    // (undocumented)
+    accepts(type: string): boolean;
+    // (undocumented)
+    aliases: string[];
+    // (undocumented)
+    default: any;
+    // (undocumented)
+    help: string;
+    // (undocumented)
+    multi: boolean;
+    // (undocumented)
+    name: string;
+    // (undocumented)
+    options: any[];
+    // (undocumented)
+    required: boolean;
+    // (undocumented)
+    resolve: boolean;
+    // (undocumented)
+    types: string[];
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionImage" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExpressionImage {
+    // (undocumented)
+    dataurl: string;
+    // (undocumented)
+    mode: string;
+    // (undocumented)
+    type: 'image';
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionRenderDefinition" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ExpressionRenderDefinition<Config = unknown> {
+    displayName: string;
+    help?: string;
+    name: string;
+    render: (domNode: HTMLElement, config: Config, handlers: IInterpreterRenderHandlers) => void | Promise<void>;
+    reuseDomNode: boolean;
+    validate?: () => undefined | Error;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionRenderer" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export class ExpressionRenderer<Config = unknown> {
+    constructor(config: ExpressionRenderDefinition<Config>);
+    // (undocumented)
+    readonly displayName: string;
+    // (undocumented)
+    readonly help: string;
+    // (undocumented)
+    readonly name: string;
+    // (undocumented)
+    readonly render: ExpressionRenderDefinition<Config>['render'];
+    // (undocumented)
+    readonly reuseDomNode: boolean;
+    // (undocumented)
+    readonly validate: () => void | Error;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionRendererRegistry" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export class ExpressionRendererRegistry implements IRegistry<ExpressionRenderer> {
+    // (undocumented)
+    get(id: string): ExpressionRenderer | null;
+    // Warning: (ae-forgotten-export) The symbol "AnyExpressionRenderDefinition" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    register(definition: AnyExpressionRenderDefinition | (() => AnyExpressionRenderDefinition)): void;
+    // (undocumented)
+    toArray(): ExpressionRenderer[];
+    // (undocumented)
+    toJS(): Record<string, ExpressionRenderer>;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionsServerPlugin" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+class ExpressionsServerPlugin implements Plugin_2<ExpressionsServerSetup, ExpressionsServerStart> {
+    constructor(initializerContext: PluginInitializerContext);
+    // Warning: (ae-forgotten-export) The symbol "ExpressionsService" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    readonly expressions: ExpressionsService;
+    // (undocumented)
+    setup(core: CoreSetup): ExpressionsServerSetup;
+    // (undocumented)
+    start(core: CoreStart): ExpressionsServerStart;
+    // (undocumented)
+    stop(): void;
+}
+
+export { ExpressionsServerPlugin }
+
+export { ExpressionsServerPlugin as Plugin }
+
+// Warning: (ae-forgotten-export) The symbol "ExpressionsServiceSetup" needs to be exported by the entry point index.d.ts
+// Warning: (ae-missing-release-tag) "ExpressionsServerSetup" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionsServerSetup = ExpressionsServiceSetup;
+
+// Warning: (ae-forgotten-export) The symbol "ExpressionsServiceStart" needs to be exported by the entry point index.d.ts
+// Warning: (ae-missing-release-tag) "ExpressionsServerStart" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionsServerStart = ExpressionsServiceStart;
+
+// Warning: (ae-missing-release-tag) "ExpressionType" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export class ExpressionType {
+    constructor(definition: AnyExpressionTypeDefinition);
+    // (undocumented)
+    castsFrom: (value: ExpressionValue) => boolean;
+    // (undocumented)
+    castsTo: (value: ExpressionValue) => boolean;
+    // (undocumented)
+    create: unknown;
+    // (undocumented)
+    deserialize?: (serialized: any) => ExpressionValue;
+    // (undocumented)
+    from: (value: ExpressionValue, types: Record<string, ExpressionType>) => any;
+    // (undocumented)
+    getFromFn: (typeName: string) => undefined | ExpressionValueConverter<ExpressionValue, ExpressionValue>;
+    // (undocumented)
+    getToFn: (typeName: string) => undefined | ExpressionValueConverter<ExpressionValue, ExpressionValue>;
+    help: string;
+    // (undocumented)
+    name: string;
+    serialize?: (value: ExpressionValue) => any;
+    // (undocumented)
+    to: (value: ExpressionValue, toTypeName: string, types: Record<string, ExpressionType>) => any;
+    validate: (type: any) => void | Error;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionTypeDefinition" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export interface ExpressionTypeDefinition<Name extends string, Value extends ExpressionValueUnboxed | ExpressionValueBoxed, SerializedType = undefined> {
+    // (undocumented)
+    deserialize?: (type: SerializedType) => Value;
+    // (undocumented)
+    from?: {
+        [type: string]: ExpressionValueConverter<any, Value>;
+    };
+    // (undocumented)
+    help?: string;
+    // (undocumented)
+    name: Name;
+    // (undocumented)
+    serialize?: (type: Value) => SerializedType;
+    // (undocumented)
+    to?: {
+        [type: string]: ExpressionValueConverter<Value, any>;
+    };
+    // (undocumented)
+    validate?: (type: any) => void | Error;
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionTypeStyle" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export interface ExpressionTypeStyle {
+    // (undocumented)
+    css: string;
+    // Warning: (ae-forgotten-export) The symbol "CSSStyle" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    spec: CSSStyle;
+    // (undocumented)
+    type: 'style';
+}
+
+// Warning: (ae-missing-release-tag) "ExpressionValue" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionValue = ExpressionValueUnboxed | ExpressionValueBoxed;
+
+// Warning: (ae-missing-release-tag) "ExpressionValueBoxed" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionValueBoxed<Type extends string = string, Value extends object = object> = {
+    type: Type;
+} & Value;
+
+// Warning: (ae-missing-release-tag) "ExpressionValueConverter" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionValueConverter<I extends ExpressionValue, O extends ExpressionValue> = (input: I, availableTypes: Record<string, any>) => O;
+
+// Warning: (ae-missing-release-tag) "ExpressionValueError" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionValueError = ExpressionValueBoxed<'error', {
+    error: {
+        message: string;
+        type?: string;
+        name?: string;
+        stack?: string;
+        original?: Error;
+    };
+    info?: unknown;
+}>;
+
+// Warning: (ae-missing-release-tag) "ExpressionValueFilter" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type ExpressionValueFilter = ExpressionValueBoxed<'filter', {
+    filterType?: string;
+    value?: string;
+    column?: string;
+    and: ExpressionValueFilter[];
+    to?: string;
+    from?: string;
+    query?: string | null;
+}>;
+
+// Warning: (ae-missing-release-tag) "ExpressionValueNum" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionValueNum = ExpressionValueBoxed<'num', {
+    value: number;
+}>;
+
+// Warning: (ae-forgotten-export) The symbol "name" needs to be exported by the entry point index.d.ts
+// Warning: (ae-missing-release-tag) "ExpressionValueRender" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+type ExpressionValueRender<T> = ExpressionValueBoxed<typeof name_2, {
+    as: string;
+    value: T;
+}>;
+
+export { ExpressionValueRender }
+
+export { ExpressionValueRender as Render }
+
+// Warning: (ae-missing-release-tag) "ExpressionValueSearchContext" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionValueSearchContext = ExpressionValueBoxed<'kibana_context', ExecutionContextSearch>;
+
+// Warning: (ae-missing-release-tag) "ExpressionValueUnboxed" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ExpressionValueUnboxed = any;
+
+// Warning: (ae-missing-release-tag) "Font" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export interface Font {
+    // (undocumented)
+    label: FontLabel;
+    // (undocumented)
+    value: FontValue;
+}
+
+// Warning: (ae-forgotten-export) The symbol "fonts" needs to be exported by the entry point index.d.ts
+// Warning: (ae-missing-release-tag) "FontLabel" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type FontLabel = typeof fonts[number]['label'];
+
+// Warning: (ae-missing-release-tag) "FontStyle" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export enum FontStyle {
+    // (undocumented)
+    ITALIC = "italic",
+    // (undocumented)
+    NORMAL = "normal"
+}
+
+// Warning: (ae-missing-release-tag) "FontValue" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type FontValue = typeof fonts[number]['value'];
+
+// Warning: (ae-missing-release-tag) "FontWeight" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export enum FontWeight {
+    // (undocumented)
+    BOLD = "bold",
+    // (undocumented)
+    BOLDER = "bolder",
+    // (undocumented)
+    EIGHT = "800",
+    // (undocumented)
+    FIVE = "500",
+    // (undocumented)
+    FOUR = "400",
+    // (undocumented)
+    LIGHTER = "lighter",
+    // (undocumented)
+    NINE = "900",
+    // (undocumented)
+    NORMAL = "normal",
+    // (undocumented)
+    ONE = "100",
+    // (undocumented)
+    SEVEN = "700",
+    // (undocumented)
+    SIX = "600",
+    // (undocumented)
+    THREE = "300",
+    // (undocumented)
+    TWO = "200"
+}
+
+// Warning: (ae-missing-release-tag) "format" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export function format<T extends ExpressionAstExpression | ExpressionAstArgument>(ast: T, type: T extends ExpressionAstExpression ? 'expression' : 'argument'): string;
+
+// Warning: (ae-missing-release-tag) "formatExpression" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export function formatExpression(ast: ExpressionAstExpression): string;
+
+// Warning: (ae-missing-release-tag) "FunctionsRegistry" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export class FunctionsRegistry implements IRegistry<ExpressionFunction> {
+    constructor(executor: Executor<any>);
+    // (undocumented)
+    get(id: string): ExpressionFunction | null;
+    // (undocumented)
+    register(functionDefinition: AnyExpressionFunctionDefinition | (() => AnyExpressionFunctionDefinition)): void;
+    // (undocumented)
+    toArray(): ExpressionFunction[];
+    // (undocumented)
+    toJS(): Record<string, ExpressionFunction>;
+}
+
+// Warning: (ae-missing-release-tag) "IInterpreterRenderHandlers" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface IInterpreterRenderHandlers {
+    done: () => void;
+    // (undocumented)
+    event: (event: any) => void;
+    // (undocumented)
+    onDestroy: (fn: () => void) => void;
+    // (undocumented)
+    reload: () => void;
+    // (undocumented)
+    update: (params: any) => void;
+}
+
+// Warning: (ae-missing-release-tag) "InterpreterErrorType" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public @deprecated (undocumented)
+export type InterpreterErrorType = ExpressionValueError;
+
+// Warning: (ae-missing-release-tag) "IRegistry" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface IRegistry<T> {
+    // (undocumented)
+    get(id: string): T | null;
+    // (undocumented)
+    toArray(): T[];
+    // (undocumented)
+    toJS(): Record<string, T>;
+}
+
+// Warning: (ae-missing-release-tag) "isExpressionAstBuilder" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export function isExpressionAstBuilder(val: any): val is ExpressionAstExpressionBuilder;
+
+// Warning: (ae-missing-release-tag) "KIBANA_CONTEXT_NAME" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type KIBANA_CONTEXT_NAME = 'kibana_context';
+
+// Warning: (ae-missing-release-tag) "KibanaContext" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type KibanaContext = ExpressionValueSearchContext;
+
+// Warning: (ae-missing-release-tag) "KibanaDatatable" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface KibanaDatatable {
+    // (undocumented)
+    columns: KibanaDatatableColumn[];
+    // (undocumented)
+    rows: KibanaDatatableRow[];
+    // Warning: (ae-forgotten-export) The symbol "name" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    type: typeof name_3;
+}
+
+// Warning: (ae-missing-release-tag) "KibanaDatatableColumn" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface KibanaDatatableColumn {
+    // (undocumented)
+    formatHint?: SerializedFieldFormat;
+    // (undocumented)
+    id: string;
+    // (undocumented)
+    meta?: KibanaDatatableColumnMeta;
+    // (undocumented)
+    name: string;
+}
+
+// Warning: (ae-missing-release-tag) "KibanaDatatableColumnMeta" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface KibanaDatatableColumnMeta {
+    // (undocumented)
+    aggConfigParams?: Record<string, any>;
+    // (undocumented)
+    indexPatternId?: string;
+    // (undocumented)
+    type: string;
+}
+
+// Warning: (ae-missing-release-tag) "KibanaDatatableRow" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface KibanaDatatableRow {
+    // (undocumented)
+    [key: string]: unknown;
+}
+
+// Warning: (ae-missing-release-tag) "KnownTypeToString" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type KnownTypeToString<T> = T extends string ? 'string' : T extends boolean ? 'boolean' : T extends number ? 'number' : T extends null ? 'null' : T extends {
+    type: string;
+} ? T['type'] : never;
+
+// Warning: (ae-missing-release-tag) "Overflow" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export enum Overflow {
+    // (undocumented)
+    AUTO = "auto",
+    // (undocumented)
+    HIDDEN = "hidden",
+    // (undocumented)
+    SCROLL = "scroll",
+    // (undocumented)
+    VISIBLE = "visible"
+}
+
+// Warning: (ae-missing-release-tag) "parse" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export function parse<E extends string, S extends 'expression' | 'argument'>(expression: E, startRule: S): S extends 'expression' ? ExpressionAstExpression : ExpressionAstArgument;
+
+// Warning: (ae-missing-release-tag) "parseExpression" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export function parseExpression(expression: string): ExpressionAstExpression;
+
+// Warning: (ae-missing-release-tag) "plugin" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export function plugin(initializerContext: PluginInitializerContext): ExpressionsServerPlugin;
+
+// Warning: (ae-missing-release-tag) "PointSeries" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type PointSeries = ExpressionValueBoxed<'pointseries', {
+    columns: PointSeriesColumns;
+    rows: PointSeriesRow[];
+}>;
+
+// Warning: (ae-missing-release-tag) "PointSeriesColumn" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export interface PointSeriesColumn {
+    // (undocumented)
+    expression: string;
+    // (undocumented)
+    role: 'measure' | 'dimension';
+    // (undocumented)
+    type: 'number' | 'string';
+}
+
+// Warning: (ae-missing-release-tag) "PointSeriesColumnName" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type PointSeriesColumnName = 'x' | 'y' | 'color' | 'size' | 'text';
+
+// Warning: (ae-missing-release-tag) "PointSeriesColumns" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type PointSeriesColumns = Record<PointSeriesColumnName, PointSeriesColumn> | {};
+
+// Warning: (ae-missing-release-tag) "PointSeriesRow" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type PointSeriesRow = Record<string, any>;
+
+// Warning: (ae-missing-release-tag) "Range" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface Range {
+    // (undocumented)
+    from: number;
+    // (undocumented)
+    to: number;
+    // Warning: (ae-forgotten-export) The symbol "name" needs to be exported by the entry point index.d.ts
+    //
+    // (undocumented)
+    type: typeof name_4;
+}
+
+// Warning: (ae-missing-release-tag) "SerializedDatatable" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface SerializedDatatable extends Datatable {
+    // (undocumented)
+    rows: string[][];
+}
+
+// Warning: (ae-missing-release-tag) "SerializedFieldFormat" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export interface SerializedFieldFormat<TParams = Record<string, any>> {
+    // (undocumented)
+    id?: string;
+    // (undocumented)
+    params?: TParams;
+}
+
+// Warning: (ae-missing-release-tag) "Style" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type Style = ExpressionTypeStyle;
+
+// Warning: (ae-missing-release-tag) "TextAlignment" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export enum TextAlignment {
+    // (undocumented)
+    CENTER = "center",
+    // (undocumented)
+    JUSTIFY = "justify",
+    // (undocumented)
+    LEFT = "left",
+    // (undocumented)
+    RIGHT = "right"
+}
+
+// Warning: (ae-missing-release-tag) "TextDecoration" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export enum TextDecoration {
+    // (undocumented)
+    NONE = "none",
+    // (undocumented)
+    UNDERLINE = "underline"
+}
+
+// Warning: (ae-missing-release-tag) "TypesRegistry" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export class TypesRegistry implements IRegistry<ExpressionType> {
+    constructor(executor: Executor<any>);
+    // (undocumented)
+    get(id: string): ExpressionType | null;
+    // (undocumented)
+    register(typeDefinition: AnyExpressionTypeDefinition | (() => AnyExpressionTypeDefinition)): void;
+    // (undocumented)
+    toArray(): ExpressionType[];
+    // (undocumented)
+    toJS(): Record<string, ExpressionType>;
+}
+
+// Warning: (ae-missing-release-tag) "TypeString" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type TypeString<T> = KnownTypeToString<UnwrapPromiseOrReturn<T>>;
+
+// Warning: (ae-missing-release-tag) "TypeToString" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type TypeToString<T> = KnownTypeToString<T> | UnmappedTypeStrings;
+
+// Warning: (ae-missing-release-tag) "UnmappedTypeStrings" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export type UnmappedTypeStrings = 'date' | 'filter';
+
+
+// (No @packageDocumentation comment for this package)
+
+```