diff --git a/docs/development/core/server/kibana-plugin-server.authnothandled.md b/docs/development/core/server/kibana-plugin-server.authnothandled.md
index 5d4a39a88ea647..01e465c266319b 100644
--- a/docs/development/core/server/kibana-plugin-server.authnothandled.md
+++ b/docs/development/core/server/kibana-plugin-server.authnothandled.md
@@ -8,7 +8,7 @@
 <b>Signature:</b>
 
 ```typescript
-export interface AuthNotHandled extends AuthNotHandledResultParams 
+export interface AuthNotHandled 
 ```
 
 ## Properties
diff --git a/docs/development/core/server/kibana-plugin-server.authnothandledresultparams.md b/docs/development/core/server/kibana-plugin-server.authnothandledresultparams.md
deleted file mode 100644
index 90e9f5a771e552..00000000000000
--- a/docs/development/core/server/kibana-plugin-server.authnothandledresultparams.md
+++ /dev/null
@@ -1,20 +0,0 @@
-<!-- Do not edit this file. It is automatically generated by API Documenter. -->
-
-[Home](./index.md) &gt; [kibana-plugin-server](./kibana-plugin-server.md) &gt; [AuthNotHandledResultParams](./kibana-plugin-server.authnothandledresultparams.md)
-
-## AuthNotHandledResultParams interface
-
-Result of unhandled authentication.
-
-<b>Signature:</b>
-
-```typescript
-export interface AuthNotHandledResultParams 
-```
-
-## Properties
-
-|  Property | Type | Description |
-|  --- | --- | --- |
-|  [responseHeaders](./kibana-plugin-server.authnothandledresultparams.responseheaders.md) | <code>AuthHeaders</code> | Auth specific headers to attach to a response object. Used to send back authentication mechanism related headers to a client when needed. |
-
diff --git a/docs/development/core/server/kibana-plugin-server.authnothandledresultparams.responseheaders.md b/docs/development/core/server/kibana-plugin-server.authnothandledresultparams.responseheaders.md
deleted file mode 100644
index 9e1e733246d16a..00000000000000
--- a/docs/development/core/server/kibana-plugin-server.authnothandledresultparams.responseheaders.md
+++ /dev/null
@@ -1,13 +0,0 @@
-<!-- Do not edit this file. It is automatically generated by API Documenter. -->
-
-[Home](./index.md) &gt; [kibana-plugin-server](./kibana-plugin-server.md) &gt; [AuthNotHandledResultParams](./kibana-plugin-server.authnothandledresultparams.md) &gt; [responseHeaders](./kibana-plugin-server.authnothandledresultparams.responseheaders.md)
-
-## AuthNotHandledResultParams.responseHeaders property
-
-Auth specific headers to attach to a response object. Used to send back authentication mechanism related headers to a client when needed.
-
-<b>Signature:</b>
-
-```typescript
-responseHeaders?: AuthHeaders;
-```
diff --git a/docs/development/core/server/kibana-plugin-server.authtoolkit.md b/docs/development/core/server/kibana-plugin-server.authtoolkit.md
index cee59409b79998..820f2692186616 100644
--- a/docs/development/core/server/kibana-plugin-server.authtoolkit.md
+++ b/docs/development/core/server/kibana-plugin-server.authtoolkit.md
@@ -17,5 +17,5 @@ export interface AuthToolkit
 |  Property | Type | Description |
 |  --- | --- | --- |
 |  [authenticated](./kibana-plugin-server.authtoolkit.authenticated.md) | <code>(data?: AuthResultParams) =&gt; AuthResult</code> | Authentication is successful with given credentials, allow request to pass through |
-|  [notHandled](./kibana-plugin-server.authtoolkit.nothandled.md) | <code>(data?: AuthNotHandledResultParams) =&gt; AuthResult</code> | User has no credentials |
+|  [notHandled](./kibana-plugin-server.authtoolkit.nothandled.md) | <code>() =&gt; AuthResult</code> | User has no credentials |
 
diff --git a/docs/development/core/server/kibana-plugin-server.authtoolkit.nothandled.md b/docs/development/core/server/kibana-plugin-server.authtoolkit.nothandled.md
index 41c5cb16567d47..7a74a4e2800869 100644
--- a/docs/development/core/server/kibana-plugin-server.authtoolkit.nothandled.md
+++ b/docs/development/core/server/kibana-plugin-server.authtoolkit.nothandled.md
@@ -9,5 +9,5 @@ User has no credentials
 <b>Signature:</b>
 
 ```typescript
-notHandled: (data?: AuthNotHandledResultParams) => AuthResult;
+notHandled: () => AuthResult;
 ```
diff --git a/docs/development/core/server/kibana-plugin-server.md b/docs/development/core/server/kibana-plugin-server.md
index 08e47a1559e18c..2a6b5df77d4f3c 100644
--- a/docs/development/core/server/kibana-plugin-server.md
+++ b/docs/development/core/server/kibana-plugin-server.md
@@ -46,7 +46,6 @@ The plugin integrates with the core system via lifecycle events: `setup`<!-- -->
 |  [AssistantAPIClientParams](./kibana-plugin-server.assistantapiclientparams.md) |  |
 |  [Authenticated](./kibana-plugin-server.authenticated.md) |  |
 |  [AuthNotHandled](./kibana-plugin-server.authnothandled.md) |  |
-|  [AuthNotHandledResultParams](./kibana-plugin-server.authnothandledresultparams.md) | Result of unhandled authentication. |
 |  [AuthResultParams](./kibana-plugin-server.authresultparams.md) | Result of successful authentication. |
 |  [AuthToolkit](./kibana-plugin-server.authtoolkit.md) | A tool set defining an outcome of Auth interceptor for incoming request. |
 |  [CallAPIOptions](./kibana-plugin-server.callapioptions.md) | The set of options that defines how API call should be made and result be processed. |
diff --git a/docs/development/core/server/kibana-plugin-server.requesthandlercontext.core.md b/docs/development/core/server/kibana-plugin-server.requesthandlercontext.core.md
index 15e60905dbc308..cb0beb20f1c504 100644
--- a/docs/development/core/server/kibana-plugin-server.requesthandlercontext.core.md
+++ b/docs/development/core/server/kibana-plugin-server.requesthandlercontext.core.md
@@ -9,7 +9,7 @@
 ```typescript
 core: {
         auth: {
-            isAuthenticated: IsAuthenticated;
+            isAuthenticated: boolean;
         };
         rendering: IScopedRenderingClient;
         savedObjects: {
diff --git a/docs/development/core/server/kibana-plugin-server.requesthandlercontext.md b/docs/development/core/server/kibana-plugin-server.requesthandlercontext.md
index 8bd2fc61f9f4e8..ddcf6f3e5f973f 100644
--- a/docs/development/core/server/kibana-plugin-server.requesthandlercontext.md
+++ b/docs/development/core/server/kibana-plugin-server.requesthandlercontext.md
@@ -18,5 +18,5 @@ export interface RequestHandlerContext
 
 |  Property | Type | Description |
 |  --- | --- | --- |
-|  [core](./kibana-plugin-server.requesthandlercontext.core.md) | <code>{</code><br/><code>        auth: {</code><br/><code>            isAuthenticated: IsAuthenticated;</code><br/><code>        };</code><br/><code>        rendering: IScopedRenderingClient;</code><br/><code>        savedObjects: {</code><br/><code>            client: SavedObjectsClientContract;</code><br/><code>        };</code><br/><code>        elasticsearch: {</code><br/><code>            dataClient: IScopedClusterClient;</code><br/><code>            adminClient: IScopedClusterClient;</code><br/><code>        };</code><br/><code>        uiSettings: {</code><br/><code>            client: IUiSettingsClient;</code><br/><code>        };</code><br/><code>    }</code> |  |
+|  [core](./kibana-plugin-server.requesthandlercontext.core.md) | <code>{</code><br/><code>        auth: {</code><br/><code>            isAuthenticated: boolean;</code><br/><code>        };</code><br/><code>        rendering: IScopedRenderingClient;</code><br/><code>        savedObjects: {</code><br/><code>            client: SavedObjectsClientContract;</code><br/><code>        };</code><br/><code>        elasticsearch: {</code><br/><code>            dataClient: IScopedClusterClient;</code><br/><code>            adminClient: IScopedClusterClient;</code><br/><code>        };</code><br/><code>        uiSettings: {</code><br/><code>            client: IUiSettingsClient;</code><br/><code>        };</code><br/><code>    }</code> |  |
 
diff --git a/src/core/server/server.api.md b/src/core/server/server.api.md
index 51e1fc5f4f79c7..d8f58bdb62ed50 100644
--- a/src/core/server/server.api.md
+++ b/src/core/server/server.api.md
@@ -419,16 +419,11 @@ export type AuthenticationHandler = (request: KibanaRequest, response: Lifecycle
 export type AuthHeaders = Record<string, string | string[]>;
 
 // @public (undocumented)
-export interface AuthNotHandled extends AuthNotHandledResultParams {
+export interface AuthNotHandled {
     // (undocumented)
     type: AuthResultType.notHandled;
 }
 
-// @public
-export interface AuthNotHandledResultParams {
-    responseHeaders?: AuthHeaders;
-}
-
 // @public (undocumented)
 export type AuthResult = Authenticated | AuthNotHandled;
 
@@ -457,7 +452,7 @@ export enum AuthStatus {
 // @public
 export interface AuthToolkit {
     authenticated: (data?: AuthResultParams) => AuthResult;
-    notHandled: (data?: AuthNotHandledResultParams) => AuthResult;
+    notHandled: () => AuthResult;
 }
 
 // @public
@@ -1429,7 +1424,7 @@ export interface RequestHandlerContext {
     // (undocumented)
     core: {
         auth: {
-            isAuthenticated: IsAuthenticated;
+            isAuthenticated: boolean;
         };
         rendering: IScopedRenderingClient;
         savedObjects: {