diff --git a/x-pack/plugins/fleet/public/applications/fleet/sections/agent_policy/components/agent_policy_form.tsx b/x-pack/plugins/fleet/public/applications/fleet/sections/agent_policy/components/agent_policy_form.tsx
index 238cba217da8e..a1ac30995f722 100644
--- a/x-pack/plugins/fleet/public/applications/fleet/sections/agent_policy/components/agent_policy_form.tsx
+++ b/x-pack/plugins/fleet/public/applications/fleet/sections/agent_policy/components/agent_policy_form.tsx
@@ -144,6 +144,7 @@ export const AgentPolicyForm: React.FunctionComponent<Props> = ({
         isInvalid={Boolean(touchedFields[name] && validation[name])}
       >
         <EuiFieldText
+          disabled={agentPolicy.is_managed === true}
           fullWidth
           value={agentPolicy[name]}
           onChange={(e) => updateAgentPolicy({ [name]: e.target.value })}
@@ -283,7 +284,7 @@ export const AgentPolicyForm: React.FunctionComponent<Props> = ({
           }}
         />
       </EuiDescribedFormGroup>
-      {isEditing && 'id' in agentPolicy ? (
+      {isEditing && 'id' in agentPolicy && agentPolicy.is_managed !== true ? (
         <EuiDescribedFormGroup
           title={
             <h4>
diff --git a/x-pack/plugins/fleet/public/applications/fleet/sections/agent_policy/details_page/components/package_policies/package_policies_table.tsx b/x-pack/plugins/fleet/public/applications/fleet/sections/agent_policy/details_page/components/package_policies/package_policies_table.tsx
index db88de0ba720b..9e23fc775a213 100644
--- a/x-pack/plugins/fleet/public/applications/fleet/sections/agent_policy/details_page/components/package_policies/package_policies_table.tsx
+++ b/x-pack/plugins/fleet/public/applications/fleet/sections/agent_policy/details_page/components/package_policies/package_policies_table.tsx
@@ -167,42 +167,45 @@ export const PackagePoliciesTable: React.FunctionComponent<Props> = ({
         }),
         actions: [
           {
-            render: (packagePolicy: InMemoryPackagePolicy) => (
-              <ContextMenuActions
-                items={[
-                  // FIXME: implement View package policy action
-                  // <EuiContextMenuItem
-                  //   disabled
-                  //   icon="inspect"
-                  //   onClick={() => {}}
-                  //   key="packagePolicyView"
-                  // >
-                  //   <FormattedMessage
-                  //     id="xpack.fleet.policyDetails.packagePoliciesTable.viewActionTitle"
-                  //     defaultMessage="View integration"
-                  //   />
-                  // </EuiContextMenuItem>,
-                  <EuiContextMenuItem
-                    disabled={!hasWriteCapabilities}
-                    icon="pencil"
-                    href={getHref('edit_integration', {
-                      policyId: agentPolicy.id,
-                      packagePolicyId: packagePolicy.id,
-                    })}
-                    key="packagePolicyEdit"
-                  >
-                    <FormattedMessage
-                      id="xpack.fleet.policyDetails.packagePoliciesTable.editActionTitle"
-                      defaultMessage="Edit integration"
-                    />
-                  </EuiContextMenuItem>,
-                  // FIXME: implement Copy package policy action
-                  // <EuiContextMenuItem disabled icon="copy" onClick={() => {}} key="packagePolicyCopy">
-                  //   <FormattedMessage
-                  //     id="xpack.fleet.policyDetails.packagePoliciesTable.copyActionTitle"
-                  //     defaultMessage="Copy integration"
-                  //   />
-                  // </EuiContextMenuItem>,
+            render: (packagePolicy: InMemoryPackagePolicy) => {
+              const menuItems = [
+                // FIXME: implement View package policy action
+                // <EuiContextMenuItem
+                //   disabled
+                //   icon="inspect"
+                //   onClick={() => {}}
+                //   key="packagePolicyView"
+                // >
+                //   <FormattedMessage
+                //     id="xpack.fleet.policyDetails.packagePoliciesTable.viewActionTitle"
+                //     defaultMessage="View integration"
+                //   />
+                // </EuiContextMenuItem>,
+                <EuiContextMenuItem
+                  disabled={!hasWriteCapabilities}
+                  icon="pencil"
+                  href={getHref('edit_integration', {
+                    policyId: agentPolicy.id,
+                    packagePolicyId: packagePolicy.id,
+                  })}
+                  key="packagePolicyEdit"
+                >
+                  <FormattedMessage
+                    id="xpack.fleet.policyDetails.packagePoliciesTable.editActionTitle"
+                    defaultMessage="Edit integration"
+                  />
+                </EuiContextMenuItem>,
+                // FIXME: implement Copy package policy action
+                // <EuiContextMenuItem disabled icon="copy" onClick={() => {}} key="packagePolicyCopy">
+                //   <FormattedMessage
+                //     id="xpack.fleet.policyDetails.packagePoliciesTable.copyActionTitle"
+                //     defaultMessage="Copy integration"
+                //   />
+                // </EuiContextMenuItem>,
+              ];
+
+              if (!agentPolicy.is_managed) {
+                menuItems.push(
                   <PackagePolicyDeleteProvider agentPolicy={agentPolicy} key="packagePolicyDelete">
                     {(deletePackagePoliciesPrompt) => {
                       return (
@@ -220,10 +223,11 @@ export const PackagePoliciesTable: React.FunctionComponent<Props> = ({
                         </DangerEuiContextMenuItem>
                       );
                     }}
-                  </PackagePolicyDeleteProvider>,
-                ]}
-              />
-            ),
+                  </PackagePolicyDeleteProvider>
+                );
+              }
+              return <ContextMenuActions items={menuItems} />;
+            },
           },
         ],
       },
@@ -244,19 +248,21 @@ export const PackagePoliciesTable: React.FunctionComponent<Props> = ({
       }}
       {...rest}
       search={{
-        toolsRight: [
-          <EuiButton
-            key="addPackagePolicyButton"
-            isDisabled={!hasWriteCapabilities}
-            iconType="plusInCircle"
-            href={getHref('add_integration_from_policy', { policyId: agentPolicy.id })}
-          >
-            <FormattedMessage
-              id="xpack.fleet.policyDetails.addPackagePolicyButtonText"
-              defaultMessage="Add integration"
-            />
-          </EuiButton>,
-        ],
+        toolsRight: agentPolicy.is_managed
+          ? []
+          : [
+              <EuiButton
+                key="addPackagePolicyButton"
+                isDisabled={!hasWriteCapabilities}
+                iconType="plusInCircle"
+                href={getHref('add_integration_from_policy', { policyId: agentPolicy.id })}
+              >
+                <FormattedMessage
+                  id="xpack.fleet.policyDetails.addPackagePolicyButtonText"
+                  defaultMessage="Add integration"
+                />
+              </EuiButton>,
+            ],
         box: {
           incremental: true,
           schema: true,
diff --git a/x-pack/plugins/fleet/public/applications/fleet/sections/agent_policy/details_page/index.tsx b/x-pack/plugins/fleet/public/applications/fleet/sections/agent_policy/details_page/index.tsx
index 350d6439c9d3d..3e6ca5944c380 100644
--- a/x-pack/plugins/fleet/public/applications/fleet/sections/agent_policy/details_page/index.tsx
+++ b/x-pack/plugins/fleet/public/applications/fleet/sections/agent_policy/details_page/index.tsx
@@ -12,6 +12,8 @@ import { FormattedMessage, FormattedDate } from '@kbn/i18n/react';
 import {
   EuiFlexGroup,
   EuiFlexItem,
+  EuiIconTip,
+  EuiTitle,
   EuiText,
   EuiSpacer,
   EuiButtonEmpty,
@@ -84,23 +86,42 @@ export const AgentPolicyDetailsPage: React.FunctionComponent = () => {
           </EuiButtonEmpty>
         </EuiFlexItem>
         <EuiFlexItem>
-          <EuiText className="eui-textBreakWord">
-            <h1>
-              {isLoading ? (
-                <Loading />
-              ) : (
-                (agentPolicy && agentPolicy.name) || (
-                  <FormattedMessage
-                    id="xpack.fleet.policyDetails.policyDetailsTitle"
-                    defaultMessage="Policy '{id}'"
-                    values={{
-                      id: policyId,
-                    }}
+          {isLoading ? (
+            <Loading />
+          ) : (
+            <EuiFlexGroup alignItems="center" wrap responsive={false} gutterSize="s">
+              <EuiFlexItem>
+                <EuiTitle>
+                  <h1>
+                    {(agentPolicy && agentPolicy.name) || (
+                      <FormattedMessage
+                        id="xpack.fleet.policyDetails.policyDetailsTitle"
+                        defaultMessage="Policy '{id}'"
+                        values={{ id: policyId }}
+                      />
+                    )}
+                  </h1>
+                </EuiTitle>
+              </EuiFlexItem>
+              {agentPolicy?.is_managed && (
+                <EuiFlexItem grow={false}>
+                  <EuiIconTip
+                    title="Managed agent policy"
+                    content={i18n.translate(
+                      'xpack.fleet.policyDetails.policyDetailsManagedPolicyTooltip',
+                      {
+                        defaultMessage:
+                          'This policy is managed outside of Fleet. Most actions related to this policy are unavailable.',
+                      }
+                    )}
+                    type="lock"
+                    size="l"
+                    color="subdued"
                   />
-                )
+                </EuiFlexItem>
               )}
-            </h1>
-          </EuiText>
+            </EuiFlexGroup>
+          )}
         </EuiFlexItem>
 
         {agentPolicy && agentPolicy.description ? (
diff --git a/x-pack/plugins/fleet/public/applications/fleet/sections/agents/agent_details_page/index.tsx b/x-pack/plugins/fleet/public/applications/fleet/sections/agents/agent_details_page/index.tsx
index adeb56f489ea3..56b99f645f97c 100644
--- a/x-pack/plugins/fleet/public/applications/fleet/sections/agents/agent_details_page/index.tsx
+++ b/x-pack/plugins/fleet/public/applications/fleet/sections/agents/agent_details_page/index.tsx
@@ -194,17 +194,18 @@ export const AgentDetailsPage: React.FunctionComponent = () => {
                 ),
             },
             {
-              content: (
-                <AgentDetailsActionMenu
-                  agent={agentData.item}
-                  assignFlyoutOpenByDefault={openReassignFlyoutOpenByDefault}
-                  onCancelReassign={
-                    routeState && routeState.onDoneNavigateTo
-                      ? reassignCancelClickHandler
-                      : undefined
-                  }
-                />
-              ),
+              content:
+                isAgentPolicyLoading || agentPolicyData?.item?.is_managed ? undefined : (
+                  <AgentDetailsActionMenu
+                    agent={agentData.item}
+                    assignFlyoutOpenByDefault={openReassignFlyoutOpenByDefault}
+                    onCancelReassign={
+                      routeState && routeState.onDoneNavigateTo
+                        ? reassignCancelClickHandler
+                        : undefined
+                    }
+                  />
+                ),
             },
           ].map((item, index) => (
             <EuiFlexItem grow={false} key={index}>
diff --git a/x-pack/plugins/fleet/public/applications/fleet/sections/agents/agent_list_page/index.tsx b/x-pack/plugins/fleet/public/applications/fleet/sections/agents/agent_list_page/index.tsx
index 8e9c549fe5609..d01d290e129b8 100644
--- a/x-pack/plugins/fleet/public/applications/fleet/sections/agents/agent_list_page/index.tsx
+++ b/x-pack/plugins/fleet/public/applications/fleet/sections/agents/agent_list_page/index.tsx
@@ -341,9 +341,10 @@ export const AgentListPage: React.FunctionComponent<{}> = () => {
 
   const isAgentSelectable = (agent: Agent) => {
     if (!agent.active) return false;
+    if (!agent.policy_id) return true;
 
-    const agentPolicy = agentPolicies.find((p) => p.id === agent.policy_id);
-    const isManaged = agent.policy_id && agentPolicy?.is_managed === true;
+    const agentPolicy = agentPoliciesIndexedById[agent.policy_id];
+    const isManaged = agentPolicy?.is_managed === true;
     return !isManaged;
   };