diff --git a/lib/providers/json-rpc-provider.d.ts b/lib/providers/json-rpc-provider.d.ts
index f363284f14..6ddfb6f4b5 100644
--- a/lib/providers/json-rpc-provider.d.ts
+++ b/lib/providers/json-rpc-provider.d.ts
@@ -1,4 +1,4 @@
-import { Provider, FinalExecutionOutcome, NodeStatusResult, BlockId, BlockResult, ChunkId, ChunkResult, EpochValidatorInfo, GenesisConfig } from './provider';
+import { Provider, FinalExecutionOutcome, NodeStatusResult, BlockId, BlockResult, ChunkId, ChunkResult, EpochValidatorInfo, GenesisConfig, LightClientProof, LightClientProofRequest } from './provider';
 import { Network } from '../utils/network';
 import { ConnectionInfo } from '../utils/web';
 import { TypedError } from '../utils/errors';
@@ -64,10 +64,15 @@ export declare class JsonRpcProvider extends Provider {
      * @returns {Promise<GenesisConfig>}
      */
     experimental_genesisConfig(): Promise<GenesisConfig>;
+    /**
+     * Gets EXPERIMENTAL_light_client_proof from RPC
+     * @returns {Promise<LightClientProof>}
+     */
+    experimental_lightClientProof(request: LightClientProofRequest): Promise<LightClientProof>;
     /**
      * Directly call the RPC specifying the method and params
      * @param method RPC method
      * @param params Parameters to the method
      */
-    sendJsonRpc(method: string, params: any[]): Promise<any>;
+    sendJsonRpc(method: string, params: any): Promise<any>;
 }
diff --git a/lib/providers/json-rpc-provider.js b/lib/providers/json-rpc-provider.js
index 371c92071e..e609b0bf1a 100644
--- a/lib/providers/json-rpc-provider.js
+++ b/lib/providers/json-rpc-provider.js
@@ -97,6 +97,13 @@ class JsonRpcProvider extends provider_1.Provider {
     async experimental_genesisConfig() {
         return await this.sendJsonRpc('EXPERIMENTAL_genesis_config', []);
     }
+    /**
+     * Gets EXPERIMENTAL_light_client_proof from RPC
+     * @returns {Promise<LightClientProof>}
+     */
+    async experimental_lightClientProof(request) {
+        return await this.sendJsonRpc('EXPERIMENTAL_light_client_proof', request);
+    }
     /**
      * Directly call the RPC specifying the method and params
      * @param method RPC method
diff --git a/lib/providers/provider.d.ts b/lib/providers/provider.d.ts
index f7d9238e51..576bbfe794 100644
--- a/lib/providers/provider.d.ts
+++ b/lib/providers/provider.d.ts
@@ -54,6 +54,12 @@ export interface ExecutionOutcome {
     gas_burnt: number;
     status: ExecutionStatus | ExecutionStatusBasic;
 }
+export interface ExecutionOutcomeWithIdView {
+    proof: MerklePath;
+    block_hash: string;
+    id: string;
+    outcome: ExecutionOutcome;
+}
 export interface FinalExecutionOutcome {
     status: FinalExecutionStatus | FinalExecutionStatusBasic;
     transaction: any;
@@ -148,6 +154,44 @@ export interface EpochValidatorInfo {
     prev_epoch_kickout: ValidatorStakeView[];
     epoch_start_height: number;
 }
+export interface MerkleNode {
+    hash: string;
+    direction: string;
+}
+export declare type MerklePath = MerkleNode[];
+export interface BlockHeaderInnerLiteView {
+    height: number;
+    epoch_id: string;
+    next_epoch_id: string;
+    prev_state_root: string;
+    outcome_root: string;
+    timestamp: number;
+    next_bp_hash: string;
+    block_merkle_root: string;
+}
+export interface LightClientBlockLiteView {
+    prev_block_hash: string;
+    inner_rest_hash: string;
+    inner_lite: BlockHeaderInnerLiteView;
+}
+export interface LightClientProof {
+    outcome_proof: ExecutionOutcomeWithIdView;
+    outcome_root_proof: MerklePath;
+    block_header_lite: LightClientBlockLiteView;
+    block_proof: MerklePath;
+}
+export declare enum IdType {
+    Transaction = "transaction",
+    Receipt = "receipt"
+}
+export interface LightClientProofRequest {
+    type: IdType;
+    light_client_head: string;
+    transaction_hash?: string;
+    sender_id?: string;
+    receipt_id?: string;
+    receiver_id?: string;
+}
 export declare abstract class Provider {
     abstract getNetwork(): Promise<Network>;
     abstract status(): Promise<NodeStatusResult>;
@@ -158,6 +202,7 @@ export declare abstract class Provider {
     abstract chunk(chunkId: ChunkId): Promise<ChunkResult>;
     abstract validators(blockId: BlockId): Promise<EpochValidatorInfo>;
     abstract experimental_genesisConfig(): Promise<GenesisConfig>;
+    abstract experimental_lightClientProof(request: LightClientProofRequest): Promise<LightClientProof>;
 }
 export declare function getTransactionLastResult(txResult: FinalExecutionOutcome): any;
 export declare function adaptTransactionResult(txResult: any): FinalExecutionOutcome;
diff --git a/lib/providers/provider.js b/lib/providers/provider.js
index d18dc30e7a..a2a7d232ae 100644
--- a/lib/providers/provider.js
+++ b/lib/providers/provider.js
@@ -1,6 +1,6 @@
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
-exports.adaptTransactionResult = exports.getTransactionLastResult = exports.Provider = exports.FinalExecutionStatusBasic = exports.ExecutionStatusBasic = void 0;
+exports.adaptTransactionResult = exports.getTransactionLastResult = exports.Provider = exports.IdType = exports.FinalExecutionStatusBasic = exports.ExecutionStatusBasic = void 0;
 var ExecutionStatusBasic;
 (function (ExecutionStatusBasic) {
     ExecutionStatusBasic["Unknown"] = "Unknown";
@@ -13,6 +13,11 @@ var FinalExecutionStatusBasic;
     FinalExecutionStatusBasic["Started"] = "Started";
     FinalExecutionStatusBasic["Failure"] = "Failure";
 })(FinalExecutionStatusBasic = exports.FinalExecutionStatusBasic || (exports.FinalExecutionStatusBasic = {}));
+var IdType;
+(function (IdType) {
+    IdType["Transaction"] = "transaction";
+    IdType["Receipt"] = "receipt";
+})(IdType = exports.IdType || (exports.IdType = {}));
 class Provider {
 }
 exports.Provider = Provider;
diff --git a/src/providers/json-rpc-provider.ts b/src/providers/json-rpc-provider.ts
index 927f5b2cb8..4e825e19d2 100644
--- a/src/providers/json-rpc-provider.ts
+++ b/src/providers/json-rpc-provider.ts
@@ -1,7 +1,7 @@
 import {
     Provider, FinalExecutionOutcome, NodeStatusResult, BlockId,
     BlockResult, ChunkId, ChunkResult, adaptTransactionResult, EpochValidatorInfo,
-    GenesisConfig
+    GenesisConfig, LightClientProof, LightClientProofRequest
 } from './provider';
 import { Network } from '../utils/network';
 import { ConnectionInfo, fetchJson } from '../utils/web';
@@ -115,12 +115,20 @@ export class JsonRpcProvider extends Provider {
         return await this.sendJsonRpc('EXPERIMENTAL_genesis_config', []);
     }
 
+    /**
+     * Gets EXPERIMENTAL_light_client_proof from RPC
+     * @returns {Promise<LightClientProof>}
+     */
+    async experimental_lightClientProof(request: LightClientProofRequest): Promise<LightClientProof> {
+        return await this.sendJsonRpc('EXPERIMENTAL_light_client_proof', request);
+    }
+
     /**
      * Directly call the RPC specifying the method and params
      * @param method RPC method
      * @param params Parameters to the method
      */
-    async sendJsonRpc(method: string, params: any[]): Promise<any> {
+    async sendJsonRpc(method: string, params: any): Promise<any> {
         const request = {
             method,
             params,
diff --git a/src/providers/provider.ts b/src/providers/provider.ts
index c278e26d4e..a3929325a1 100644
--- a/src/providers/provider.ts
+++ b/src/providers/provider.ts
@@ -66,6 +66,13 @@ export interface ExecutionOutcome {
     status: ExecutionStatus | ExecutionStatusBasic;
 }
 
+export interface ExecutionOutcomeWithIdView {
+    proof: MerklePath;
+    block_hash: string;
+    id: string;
+    outcome: ExecutionOutcome;
+}
+
 export interface FinalExecutionOutcome {
     status: FinalExecutionStatus | FinalExecutionStatusBasic;
     transaction: any;
@@ -181,6 +188,51 @@ export interface EpochValidatorInfo {
     epoch_start_height: number;
 }
 
+export interface MerkleNode {
+    hash: string;
+    direction: string;
+}
+
+export type MerklePath = MerkleNode[];
+
+export interface BlockHeaderInnerLiteView {
+    height: number;
+    epoch_id: string;
+    next_epoch_id: string;
+    prev_state_root: string;
+    outcome_root: string;
+    timestamp: number;
+    next_bp_hash: string;
+    block_merkle_root: string;
+}
+
+export interface LightClientBlockLiteView {
+    prev_block_hash: string;
+    inner_rest_hash: string;
+    inner_lite: BlockHeaderInnerLiteView;
+}
+
+export interface LightClientProof {
+    outcome_proof: ExecutionOutcomeWithIdView;
+    outcome_root_proof: MerklePath;
+    block_header_lite: LightClientBlockLiteView;
+    block_proof: MerklePath;
+}
+
+export enum IdType {
+    Transaction = 'transaction',
+    Receipt = 'receipt',
+}
+
+export interface LightClientProofRequest {
+    type: IdType;
+    light_client_head: string;
+    transaction_hash?: string;
+    sender_id?: string;
+    receipt_id?: string;
+    receiver_id?: string;
+}
+
 export abstract class Provider {
     abstract async getNetwork(): Promise<Network>;
     abstract async status(): Promise<NodeStatusResult>;
@@ -192,6 +244,7 @@ export abstract class Provider {
     abstract async chunk(chunkId: ChunkId): Promise<ChunkResult>;
     abstract async validators(blockId: BlockId): Promise<EpochValidatorInfo>;
     abstract async experimental_genesisConfig(): Promise<GenesisConfig>;
+    abstract async experimental_lightClientProof(request: LightClientProofRequest): Promise<LightClientProof>;
 }
 
 export function getTransactionLastResult(txResult: FinalExecutionOutcome): any {