diff --git a/packages/app-next-example-plugin/report.api.md b/packages/app-next-example-plugin/report.api.md
index 12346d908c..bfcafbe2d2 100644
--- a/packages/app-next-example-plugin/report.api.md
+++ b/packages/app-next-example-plugin/report.api.md
@@ -5,9 +5,9 @@
 ```ts
 import { AnyRouteRefParams } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { JSX as JSX_2 } from 'react';
 import { JSX as JSX_3 } from 'react/jsx-runtime';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 import { RouteRef } from '@backstage/frontend-plugin-api';
 
@@ -16,7 +16,7 @@ const examplePlugin: OverridableFrontendPlugin<
   {},
   {},
   {
-    'page:example': ExtensionDefinition<{
+    'page:example': OverridableExtensionDefinition<{
       kind: 'page';
       name: undefined;
       config: {
diff --git a/packages/frontend-plugin-api/report.api.md b/packages/frontend-plugin-api/report.api.md
index c3dd12119f..f2fe60c82a 100644
--- a/packages/frontend-plugin-api/report.api.md
+++ b/packages/frontend-plugin-api/report.api.md
@@ -418,7 +418,7 @@ export function createExtension<
     UFactoryOutput,
     UParentInputs
   >,
-): ExtensionDefinition<{
+): OverridableExtensionDefinition<{
   config: string extends keyof TConfigSchema
     ? {}
     : {
@@ -881,7 +881,7 @@ export interface ExtensionBlueprint<
       : T['params'] extends ExtensionBlueprintDefineParams
       ? 'Error: This blueprint uses advanced parameter types and requires you to pass parameters as using the following callback syntax: `<blueprint>.make({ params: defineParams => defineParams(<params>) })`'
       : T['params'];
-  }): ExtensionDefinition<{
+  }): OverridableExtensionDefinition<{
     kind: T['kind'];
     name: string | undefined extends TName ? undefined : TName;
     config: T['config'];
@@ -953,7 +953,7 @@ export interface ExtensionBlueprint<
           : UNewOutput,
         UFactoryOutput
       >;
-  }): ExtensionDefinition<{
+  }): OverridableExtensionDefinition<{
     config: (string extends keyof TExtensionConfigSchema
       ? {}
       : {
@@ -1088,117 +1088,14 @@ export type ExtensionDataValue<TData, TId extends string> = {
 };
 
 // @public (undocumented)
-export type ExtensionDefinition<
-  T extends ExtensionDefinitionParameters = ExtensionDefinitionParameters,
-> = {
+export interface ExtensionDefinition<
+  TParams extends ExtensionDefinitionParameters = ExtensionDefinitionParameters,
+> {
+  // (undocumented)
   $$type: '@backstage/ExtensionDefinition';
-  readonly T: T;
-  readonly inputs: {
-    [K in keyof T['inputs']]: ExtensionInput<
-      T['inputs'][K] extends ExtensionInput<infer IData> ? IData : never
-    >;
-  };
-  override<
-    TExtensionConfigSchema extends {
-      [key in string]: (zImpl: typeof z) => z.ZodType;
-    },
-    UFactoryOutput extends ExtensionDataValue<any, any>,
-    UNewOutput extends ExtensionDataRef,
-    TExtraInputs extends {
-      [inputName in string]: ExtensionInput;
-    },
-    TParamsInput extends AnyParamsInput_2<NonNullable<T['params']>>,
-    UParentInputs extends ExtensionDataRef,
-  >(
-    args: Expand<
-      {
-        attachTo?: ExtensionDefinitionAttachTo<UParentInputs> &
-          VerifyExtensionAttachTo<
-            ExtensionDataRef extends UNewOutput
-              ? NonNullable<T['output']>
-              : UNewOutput,
-            UParentInputs
-          >;
-        disabled?: boolean;
-        inputs?: TExtraInputs & {
-          [KName in keyof T['inputs']]?: `Error: Input '${KName &
-            string}' is already defined in parent definition`;
-        };
-        output?: Array<UNewOutput>;
-        config?: {
-          schema: TExtensionConfigSchema & {
-            [KName in keyof T['config']]?: `Error: Config key '${KName &
-              string}' is already defined in parent schema`;
-          };
-        };
-        factory?(
-          originalFactory: <
-            TFactoryParamsReturn extends AnyParamsInput_2<
-              NonNullable<T['params']>
-            >,
-          >(
-            context?: Expand<
-              {
-                config?: T['config'];
-                inputs?: ResolvedInputValueOverrides<NonNullable<T['inputs']>>;
-              } & ([T['params']] extends [never]
-                ? {}
-                : {
-                    params?: TFactoryParamsReturn extends ExtensionBlueprintDefineParams
-                      ? TFactoryParamsReturn
-                      : T['params'] extends ExtensionBlueprintDefineParams
-                      ? 'Error: This blueprint uses advanced parameter types and requires you to pass parameters as using the following callback syntax: `originalFactory(defineParams => defineParams(<params>))`'
-                      : Partial<T['params']>;
-                  })
-            >,
-          ) => ExtensionDataContainer<NonNullable<T['output']>>,
-          context: {
-            node: AppNode;
-            apis: ApiHolder;
-            config: T['config'] & {
-              [key in keyof TExtensionConfigSchema]: z.infer<
-                ReturnType<TExtensionConfigSchema[key]>
-              >;
-            };
-            inputs: Expand<ResolvedExtensionInputs<T['inputs'] & TExtraInputs>>;
-          },
-        ): Iterable<UFactoryOutput>;
-      } & ([T['params']] extends [never]
-        ? {}
-        : {
-            params?: TParamsInput extends ExtensionBlueprintDefineParams
-              ? TParamsInput
-              : T['params'] extends ExtensionBlueprintDefineParams
-              ? 'Error: This blueprint uses advanced parameter types and requires you to pass parameters as using the following callback syntax: `originalFactory(defineParams => defineParams(<params>))`'
-              : Partial<T['params']>;
-          })
-    > &
-      VerifyExtensionFactoryOutput<
-        ExtensionDataRef extends UNewOutput
-          ? NonNullable<T['output']>
-          : UNewOutput,
-        UFactoryOutput
-      >,
-  ): ExtensionDefinition<{
-    kind: T['kind'];
-    name: T['name'];
-    output: ExtensionDataRef extends UNewOutput ? T['output'] : UNewOutput;
-    inputs: T['inputs'] & TExtraInputs;
-    config: T['config'] & {
-      [key in keyof TExtensionConfigSchema]: z.infer<
-        ReturnType<TExtensionConfigSchema[key]>
-      >;
-    };
-    configInput: T['configInput'] &
-      z.input<
-        z.ZodObject<{
-          [key in keyof TExtensionConfigSchema]: ReturnType<
-            TExtensionConfigSchema[key]
-          >;
-        }>
-      >;
-  }>;
-};
+  // (undocumented)
+  readonly T: TParams;
+}
 
 // @public
 export type ExtensionDefinitionAttachTo<
@@ -1544,6 +1441,118 @@ export { OpenIdConnectApi };
 
 export { openshiftAuthApiRef };
 
+// @public (undocumented)
+export interface OverridableExtensionDefinition<
+  T extends ExtensionDefinitionParameters = ExtensionDefinitionParameters,
+> extends ExtensionDefinition<T> {
+  readonly inputs: {
+    [K in keyof T['inputs']]: ExtensionInput<
+      T['inputs'][K] extends ExtensionInput<infer IData> ? IData : never
+    >;
+  };
+  // (undocumented)
+  override<
+    TExtensionConfigSchema extends {
+      [key in string]: (zImpl: typeof z) => z.ZodType;
+    },
+    UFactoryOutput extends ExtensionDataValue<any, any>,
+    UNewOutput extends ExtensionDataRef,
+    TExtraInputs extends {
+      [inputName in string]: ExtensionInput;
+    },
+    TParamsInput extends AnyParamsInput_2<NonNullable<T['params']>>,
+    UParentInputs extends ExtensionDataRef,
+  >(
+    args: Expand<
+      {
+        attachTo?: ExtensionDefinitionAttachTo<UParentInputs> &
+          VerifyExtensionAttachTo<
+            ExtensionDataRef extends UNewOutput
+              ? NonNullable<T['output']>
+              : UNewOutput,
+            UParentInputs
+          >;
+        disabled?: boolean;
+        inputs?: TExtraInputs & {
+          [KName in keyof T['inputs']]?: `Error: Input '${KName &
+            string}' is already defined in parent definition`;
+        };
+        output?: Array<UNewOutput>;
+        config?: {
+          schema: TExtensionConfigSchema & {
+            [KName in keyof T['config']]?: `Error: Config key '${KName &
+              string}' is already defined in parent schema`;
+          };
+        };
+        factory?(
+          originalFactory: <
+            TFactoryParamsReturn extends AnyParamsInput_2<
+              NonNullable<T['params']>
+            >,
+          >(
+            context?: Expand<
+              {
+                config?: T['config'];
+                inputs?: ResolvedInputValueOverrides<NonNullable<T['inputs']>>;
+              } & ([T['params']] extends [never]
+                ? {}
+                : {
+                    params?: TFactoryParamsReturn extends ExtensionBlueprintDefineParams
+                      ? TFactoryParamsReturn
+                      : T['params'] extends ExtensionBlueprintDefineParams
+                      ? 'Error: This blueprint uses advanced parameter types and requires you to pass parameters as using the following callback syntax: `originalFactory(defineParams => defineParams(<params>))`'
+                      : Partial<T['params']>;
+                  })
+            >,
+          ) => ExtensionDataContainer<NonNullable<T['output']>>,
+          context: {
+            node: AppNode;
+            apis: ApiHolder;
+            config: T['config'] & {
+              [key in keyof TExtensionConfigSchema]: z.infer<
+                ReturnType<TExtensionConfigSchema[key]>
+              >;
+            };
+            inputs: Expand<ResolvedExtensionInputs<T['inputs'] & TExtraInputs>>;
+          },
+        ): Iterable<UFactoryOutput>;
+      } & ([T['params']] extends [never]
+        ? {}
+        : {
+            params?: TParamsInput extends ExtensionBlueprintDefineParams
+              ? TParamsInput
+              : T['params'] extends ExtensionBlueprintDefineParams
+              ? 'Error: This blueprint uses advanced parameter types and requires you to pass parameters as using the following callback syntax: `originalFactory(defineParams => defineParams(<params>))`'
+              : Partial<T['params']>;
+          })
+    > &
+      VerifyExtensionFactoryOutput<
+        ExtensionDataRef extends UNewOutput
+          ? NonNullable<T['output']>
+          : UNewOutput,
+        UFactoryOutput
+      >,
+  ): OverridableExtensionDefinition<{
+    kind: T['kind'];
+    name: T['name'];
+    output: ExtensionDataRef extends UNewOutput ? T['output'] : UNewOutput;
+    inputs: T['inputs'] & TExtraInputs;
+    config: T['config'] & {
+      [key in keyof TExtensionConfigSchema]: z.infer<
+        ReturnType<TExtensionConfigSchema[key]>
+      >;
+    };
+    configInput: T['configInput'] &
+      z.input<
+        z.ZodObject<{
+          [key in keyof TExtensionConfigSchema]: ReturnType<
+            TExtensionConfigSchema[key]
+          >;
+        }>
+      >;
+  }>;
+}
+
 // @public
 export interface OverridableFrontendPlugin<
   TRoutes extends {
@@ -1563,7 +1572,9 @@ export interface OverridableFrontendPlugin<
   },
 > extends FrontendPlugin<TRoutes, TExternalRoutes> {
   // (undocumented)
-  getExtension<TId extends keyof TExtensionMap>(id: TId): TExtensionMap[TId];
+  getExtension<TId extends keyof TExtensionMap>(
+    id: TId,
+  ): OverridableExtensionDefinition<TExtensionMap[TId]['T']>;
   // (undocumented)
   withOverrides(options: {
     extensions: Array<ExtensionDefinition>;
diff --git a/plugins/api-docs/report-alpha.api.md b/plugins/api-docs/report-alpha.api.md
index 43c45c1a1d..7d134dcb6d 100644
--- a/plugins/api-docs/report-alpha.api.md
+++ b/plugins/api-docs/report-alpha.api.md
@@ -12,11 +12,11 @@ import { EntityCardType } from '@backstage/plugin-catalog-react/alpha';
 import { EntityPredicate } from '@backstage/plugin-catalog-react/alpha';
 import { ExtensionBlueprintParams } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { ExtensionInput } from '@backstage/frontend-plugin-api';
 import { ExternalRouteRef } from '@backstage/frontend-plugin-api';
 import { IconComponent } from '@backstage/core-plugin-api';
 import { JSX as JSX_2 } from 'react';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 import { RouteRef } from '@backstage/frontend-plugin-api';
 import { TranslationRef } from '@backstage/frontend-plugin-api';
@@ -63,7 +63,7 @@ const _default: OverridableFrontendPlugin<
     registerApi: ExternalRouteRef<undefined>;
   },
   {
-    'api:api-docs/config': ExtensionDefinition<{
+    'api:api-docs/config': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'config';
       config: {};
@@ -78,7 +78,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'entity-card:api-docs/consumed-apis': ExtensionDefinition<{
+    'entity-card:api-docs/consumed-apis': OverridableExtensionDefinition<{
       kind: 'entity-card';
       name: 'consumed-apis';
       config: {
@@ -119,7 +119,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'entity-card:api-docs/consuming-components': ExtensionDefinition<{
+    'entity-card:api-docs/consuming-components': OverridableExtensionDefinition<{
       kind: 'entity-card';
       name: 'consuming-components';
       config: {
@@ -160,7 +160,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'entity-card:api-docs/definition': ExtensionDefinition<{
+    'entity-card:api-docs/definition': OverridableExtensionDefinition<{
       kind: 'entity-card';
       name: 'definition';
       config: {
@@ -201,7 +201,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'entity-card:api-docs/has-apis': ExtensionDefinition<{
+    'entity-card:api-docs/has-apis': OverridableExtensionDefinition<{
       kind: 'entity-card';
       name: 'has-apis';
       config: {
@@ -242,7 +242,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'entity-card:api-docs/provided-apis': ExtensionDefinition<{
+    'entity-card:api-docs/provided-apis': OverridableExtensionDefinition<{
       kind: 'entity-card';
       name: 'provided-apis';
       config: {
@@ -283,7 +283,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'entity-card:api-docs/providing-components': ExtensionDefinition<{
+    'entity-card:api-docs/providing-components': OverridableExtensionDefinition<{
       kind: 'entity-card';
       name: 'providing-components';
       config: {
@@ -324,7 +324,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'entity-content:api-docs/apis': ExtensionDefinition<{
+    'entity-content:api-docs/apis': OverridableExtensionDefinition<{
       kind: 'entity-content';
       name: 'apis';
       config: {
@@ -384,7 +384,7 @@ const _default: OverridableFrontendPlugin<
         filter?: string | EntityPredicate | ((entity: Entity) => boolean);
       };
     }>;
-    'entity-content:api-docs/definition': ExtensionDefinition<{
+    'entity-content:api-docs/definition': OverridableExtensionDefinition<{
       kind: 'entity-content';
       name: 'definition';
       config: {
@@ -444,7 +444,7 @@ const _default: OverridableFrontendPlugin<
         filter?: string | EntityPredicate | ((entity: Entity) => boolean);
       };
     }>;
-    'nav-item:api-docs': ExtensionDefinition<{
+    'nav-item:api-docs': OverridableExtensionDefinition<{
       kind: 'nav-item';
       name: undefined;
       config: {};
@@ -465,7 +465,7 @@ const _default: OverridableFrontendPlugin<
         routeRef: RouteRef<undefined>;
       };
     }>;
-    'page:api-docs': ExtensionDefinition<{
+    'page:api-docs': OverridableExtensionDefinition<{
       config: {
         initiallySelectedFilter: 'all' | 'owned' | 'starred' | undefined;
       } & {
diff --git a/plugins/app-visualizer/report.api.md b/plugins/app-visualizer/report.api.md
index 1283df5486..f3b7e6ae61 100644
--- a/plugins/app-visualizer/report.api.md
+++ b/plugins/app-visualizer/report.api.md
@@ -5,9 +5,9 @@
 ```ts
 import { AnyRouteRefParams } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { IconComponent } from '@backstage/core-plugin-api';
 import { JSX as JSX_2 } from 'react';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 import { RouteRef } from '@backstage/frontend-plugin-api';
 
@@ -16,7 +16,7 @@ const visualizerPlugin: OverridableFrontendPlugin<
   {},
   {},
   {
-    'nav-item:app-visualizer': ExtensionDefinition<{
+    'nav-item:app-visualizer': OverridableExtensionDefinition<{
       kind: 'nav-item';
       name: undefined;
       config: {};
@@ -37,7 +37,7 @@ const visualizerPlugin: OverridableFrontendPlugin<
         routeRef: RouteRef<undefined>;
       };
     }>;
-    'page:app-visualizer': ExtensionDefinition<{
+    'page:app-visualizer': OverridableExtensionDefinition<{
       kind: 'page';
       name: undefined;
       config: {
diff --git a/plugins/app/report.api.md b/plugins/app/report.api.md
index 595cc9bc19..bd8c05bfe4 100644
--- a/plugins/app/report.api.md
+++ b/plugins/app/report.api.md
@@ -12,12 +12,12 @@ import { ComponentType } from 'react';
 import { ConfigurableExtensionDataRef } from '@backstage/frontend-plugin-api';
 import { ExtensionBlueprintParams } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { ExtensionInput } from '@backstage/frontend-plugin-api';
 import { IconComponent } from '@backstage/core-plugin-api';
 import { IconComponent as IconComponent_2 } from '@backstage/frontend-plugin-api';
 import { JSX as JSX_2 } from 'react';
 import { NavContentComponent } from '@backstage/frontend-plugin-api';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 import { ReactNode } from 'react';
 import { RouteRef } from '@backstage/frontend-plugin-api';
@@ -31,7 +31,7 @@ const appPlugin: OverridableFrontendPlugin<
   {},
   {},
   {
-    app: ExtensionDefinition<{
+    app: OverridableExtensionDefinition<{
       config: {};
       configInput: {};
       output: ExtensionDataRef<JSX_2.Element, 'core.reactElement', {}>;
@@ -48,7 +48,7 @@ const appPlugin: OverridableFrontendPlugin<
       kind: undefined;
       name: undefined;
     }>;
-    'app/layout': ExtensionDefinition<{
+    'app/layout': OverridableExtensionDefinition<{
       config: {};
       configInput: {};
       output: ExtensionDataRef<JSX_2.Element, 'core.reactElement', {}>;
@@ -72,7 +72,7 @@ const appPlugin: OverridableFrontendPlugin<
       kind: undefined;
       name: 'layout';
     }>;
-    'app/nav': ExtensionDefinition<{
+    'app/nav': OverridableExtensionDefinition<{
       config: {};
       configInput: {};
       output: ExtensionDataRef<JSX_2.Element, 'core.reactElement', {}>;
@@ -108,7 +108,7 @@ const appPlugin: OverridableFrontendPlugin<
       kind: undefined;
       name: 'nav';
     }>;
-    'app/root': ExtensionDefinition<{
+    'app/root': OverridableExtensionDefinition<{
       config: {};
       configInput: {};
       output: ExtensionDataRef<JSX_2.Element, 'core.reactElement', {}>;
@@ -165,7 +165,7 @@ const appPlugin: OverridableFrontendPlugin<
       kind: undefined;
       name: 'root';
     }>;
-    'app/routes': ExtensionDefinition<{
+    'app/routes': OverridableExtensionDefinition<{
       config: {};
       configInput: {};
       output: ExtensionDataRef<JSX_2.Element, 'core.reactElement', {}>;
@@ -190,7 +190,7 @@ const appPlugin: OverridableFrontendPlugin<
       kind: undefined;
       name: 'routes';
     }>;
-    'api:app/alert': ExtensionDefinition<{
+    'api:app/alert': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'alert';
       config: {};
@@ -205,7 +205,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/analytics': ExtensionDefinition<{
+    'api:app/analytics': OverridableExtensionDefinition<{
       config: {};
       configInput: {};
       output: ExtensionDataRef<AnyApiFactory, 'core.api.factory', {}>;
@@ -232,7 +232,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/app-language': ExtensionDefinition<{
+    'api:app/app-language': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'app-language';
       config: {};
@@ -247,7 +247,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/app-theme': ExtensionDefinition<{
+    'api:app/app-theme': OverridableExtensionDefinition<{
       config: {};
       configInput: {};
       output: ExtensionDataRef<AnyApiFactory, 'core.api.factory', {}>;
@@ -270,7 +270,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/atlassian-auth': ExtensionDefinition<{
+    'api:app/atlassian-auth': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'atlassian-auth';
       config: {};
@@ -285,7 +285,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/bitbucket-auth': ExtensionDefinition<{
+    'api:app/bitbucket-auth': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'bitbucket-auth';
       config: {};
@@ -300,7 +300,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/bitbucket-server-auth': ExtensionDefinition<{
+    'api:app/bitbucket-server-auth': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'bitbucket-server-auth';
       config: {};
@@ -315,7 +315,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/components': ExtensionDefinition<{
+    'api:app/components': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'components';
       config: {};
@@ -330,7 +330,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/dialog': ExtensionDefinition<{
+    'api:app/dialog': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'dialog';
       config: {};
@@ -345,7 +345,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/discovery': ExtensionDefinition<{
+    'api:app/discovery': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'discovery';
       config: {};
@@ -360,7 +360,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/error': ExtensionDefinition<{
+    'api:app/error': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'error';
       config: {};
@@ -375,7 +375,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/feature-flags': ExtensionDefinition<{
+    'api:app/feature-flags': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'feature-flags';
       config: {};
@@ -390,7 +390,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/fetch': ExtensionDefinition<{
+    'api:app/fetch': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'fetch';
       config: {};
@@ -405,7 +405,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/github-auth': ExtensionDefinition<{
+    'api:app/github-auth': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'github-auth';
       config: {};
@@ -420,7 +420,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/gitlab-auth': ExtensionDefinition<{
+    'api:app/gitlab-auth': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'gitlab-auth';
       config: {};
@@ -435,7 +435,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/google-auth': ExtensionDefinition<{
+    'api:app/google-auth': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'google-auth';
       config: {};
@@ -450,7 +450,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/icons': ExtensionDefinition<{
+    'api:app/icons': OverridableExtensionDefinition<{
       config: {};
       configInput: {};
       output: ExtensionDataRef<AnyApiFactory, 'core.api.factory', {}>;
@@ -479,7 +479,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/microsoft-auth': ExtensionDefinition<{
+    'api:app/microsoft-auth': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'microsoft-auth';
       config: {};
@@ -494,7 +494,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/oauth-request': ExtensionDefinition<{
+    'api:app/oauth-request': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'oauth-request';
       config: {};
@@ -509,7 +509,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/okta-auth': ExtensionDefinition<{
+    'api:app/okta-auth': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'okta-auth';
       config: {};
@@ -524,7 +524,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/onelogin-auth': ExtensionDefinition<{
+    'api:app/onelogin-auth': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'onelogin-auth';
       config: {};
@@ -539,7 +539,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/openshift-auth': ExtensionDefinition<{
+    'api:app/openshift-auth': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'openshift-auth';
       config: {};
@@ -554,7 +554,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/permission': ExtensionDefinition<{
+    'api:app/permission': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'permission';
       config: {};
@@ -569,7 +569,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/scm-auth': ExtensionDefinition<{
+    'api:app/scm-auth': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'scm-auth';
       config: {};
@@ -584,7 +584,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/scm-integrations': ExtensionDefinition<{
+    'api:app/scm-integrations': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'scm-integrations';
       config: {};
@@ -599,7 +599,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/storage': ExtensionDefinition<{
+    'api:app/storage': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'storage';
       config: {};
@@ -614,7 +614,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/swappable-components': ExtensionDefinition<{
+    'api:app/swappable-components': OverridableExtensionDefinition<{
       config: {};
       configInput: {};
       output: ExtensionDataRef<AnyApiFactory, 'core.api.factory', {}>;
@@ -646,7 +646,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/translations': ExtensionDefinition<{
+    'api:app/translations': OverridableExtensionDefinition<{
       config: {};
       configInput: {};
       output: ExtensionDataRef<AnyApiFactory, 'core.api.factory', {}>;
@@ -680,7 +680,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:app/vmware-cloud-auth': ExtensionDefinition<{
+    'api:app/vmware-cloud-auth': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'vmware-cloud-auth';
       config: {};
@@ -695,7 +695,7 @@ const appPlugin: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'app-root-element:app/alert-display': ExtensionDefinition<{
+    'app-root-element:app/alert-display': OverridableExtensionDefinition<{
       config: {
         transientTimeoutMs: number;
         anchorOrigin: {
@@ -728,7 +728,7 @@ const appPlugin: OverridableFrontendPlugin<
         element: JSX.Element;
       };
     }>;
-    'app-root-element:app/dialog-display': ExtensionDefinition<{
+    'app-root-element:app/dialog-display': OverridableExtensionDefinition<{
       config: {};
       configInput: {};
       output: ExtensionDataRef<JSX_2.Element, 'core.reactElement', {}>;
@@ -747,7 +747,7 @@ const appPlugin: OverridableFrontendPlugin<
         element: JSX.Element;
       };
     }>;
-    'app-root-element:app/oauth-request-dialog': ExtensionDefinition<{
+    'app-root-element:app/oauth-request-dialog': OverridableExtensionDefinition<{
       kind: 'app-root-element';
       name: 'oauth-request-dialog';
       config: {};
@@ -758,7 +758,7 @@ const appPlugin: OverridableFrontendPlugin<
         element: JSX.Element;
       };
     }>;
-    'component:app/core-error-display': ExtensionDefinition<{
+    'component:app/core-error-display': OverridableExtensionDefinition<{
       kind: 'component';
       name: 'core-error-display';
       config: {};
@@ -814,7 +814,7 @@ const appPlugin: OverridableFrontendPlugin<
           : never;
       }>;
     }>;
-    'component:app/core-not-found-error-page': ExtensionDefinition<{
+    'component:app/core-not-found-error-page': OverridableExtensionDefinition<{
       kind: 'component';
       name: 'core-not-found-error-page';
       config: {};
@@ -870,7 +870,7 @@ const appPlugin: OverridableFrontendPlugin<
           : never;
       }>;
     }>;
-    'component:app/core-progress': ExtensionDefinition<{
+    'component:app/core-progress': OverridableExtensionDefinition<{
       kind: 'component';
       name: 'core-progress';
       config: {};
@@ -926,7 +926,7 @@ const appPlugin: OverridableFrontendPlugin<
           : never;
       }>;
     }>;
-    'sign-in-page:app': ExtensionDefinition<{
+    'sign-in-page:app': OverridableExtensionDefinition<{
       kind: 'sign-in-page';
       name: undefined;
       config: {};
@@ -941,7 +941,7 @@ const appPlugin: OverridableFrontendPlugin<
         loader: () => Promise<ComponentType<SignInPageProps>>;
       };
     }>;
-    'theme:app/dark': ExtensionDefinition<{
+    'theme:app/dark': OverridableExtensionDefinition<{
       kind: 'theme';
       name: 'dark';
       config: {};
@@ -952,7 +952,7 @@ const appPlugin: OverridableFrontendPlugin<
         theme: AppTheme;
       };
     }>;
-    'theme:app/light': ExtensionDefinition<{
+    'theme:app/light': OverridableExtensionDefinition<{
       kind: 'theme';
       name: 'light';
       config: {};
diff --git a/plugins/auth/report.api.md b/plugins/auth/report.api.md
index 4c7d2d4a11..1d346a9ce4 100644
--- a/plugins/auth/report.api.md
+++ b/plugins/auth/report.api.md
@@ -5,8 +5,8 @@
 ```ts
 import { AnyRouteRefParams } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { JSX as JSX_2 } from 'react';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 import { RouteRef } from '@backstage/frontend-plugin-api';
 
@@ -17,7 +17,7 @@ const _default: OverridableFrontendPlugin<
   },
   {},
   {
-    'page:auth': ExtensionDefinition<{
+    'page:auth': OverridableExtensionDefinition<{
       kind: 'page';
       name: undefined;
       config: {
diff --git a/plugins/catalog-graph/report-alpha.api.md b/plugins/catalog-graph/report-alpha.api.md
index 0d06beacc4..285b8b3119 100644
--- a/plugins/catalog-graph/report-alpha.api.md
+++ b/plugins/catalog-graph/report-alpha.api.md
@@ -11,10 +11,10 @@ import { EntityCardType } from '@backstage/plugin-catalog-react/alpha';
 import { EntityPredicate } from '@backstage/plugin-catalog-react/alpha';
 import { ExtensionBlueprintParams } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { ExtensionInput } from '@backstage/frontend-plugin-api';
 import { ExternalRouteRef } from '@backstage/frontend-plugin-api';
 import { JSX as JSX_2 } from 'react';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 import { RouteRef } from '@backstage/frontend-plugin-api';
 import { TranslationRef } from '@backstage/frontend-plugin-api';
@@ -60,7 +60,7 @@ const _default: OverridableFrontendPlugin<
     }>;
   },
   {
-    'api:catalog-graph': ExtensionDefinition<{
+    'api:catalog-graph': OverridableExtensionDefinition<{
       kind: 'api';
       name: undefined;
       config: {};
@@ -75,7 +75,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'entity-card:catalog-graph/relations': ExtensionDefinition<{
+    'entity-card:catalog-graph/relations': OverridableExtensionDefinition<{
       config: {
         kinds: string[] | undefined;
         relations: string[] | undefined;
@@ -148,7 +148,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'page:catalog-graph': ExtensionDefinition<{
+    'page:catalog-graph': OverridableExtensionDefinition<{
       config: {
         selectedKinds: string[] | undefined;
         selectedRelations: string[] | undefined;
diff --git a/plugins/catalog-import/report-alpha.api.md b/plugins/catalog-import/report-alpha.api.md
index 051e38cd19..5dfa90388a 100644
--- a/plugins/catalog-import/report-alpha.api.md
+++ b/plugins/catalog-import/report-alpha.api.md
@@ -8,8 +8,8 @@ import { AnyRouteRefParams } from '@backstage/frontend-plugin-api';
 import { ApiFactory } from '@backstage/core-plugin-api';
 import { ExtensionBlueprintParams } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { JSX as JSX_2 } from 'react';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 import { RouteRef } from '@backstage/frontend-plugin-api';
 import { TranslationRef } from '@backstage/core-plugin-api/alpha';
@@ -94,7 +94,7 @@ const _default: OverridableFrontendPlugin<
   },
   {},
   {
-    'api:catalog-import': ExtensionDefinition<{
+    'api:catalog-import': OverridableExtensionDefinition<{
       kind: 'api';
       name: undefined;
       config: {};
@@ -109,7 +109,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'page:catalog-import': ExtensionDefinition<{
+    'page:catalog-import': OverridableExtensionDefinition<{
       kind: 'page';
       name: undefined;
       config: {
diff --git a/plugins/catalog-unprocessed-entities/report-alpha.api.md b/plugins/catalog-unprocessed-entities/report-alpha.api.md
index 17d28ee165..5518f6d273 100644
--- a/plugins/catalog-unprocessed-entities/report-alpha.api.md
+++ b/plugins/catalog-unprocessed-entities/report-alpha.api.md
@@ -8,9 +8,9 @@ import { AnyRouteRefParams } from '@backstage/frontend-plugin-api';
 import { ApiFactory } from '@backstage/frontend-plugin-api';
 import { ExtensionBlueprintParams } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { IconComponent } from '@backstage/core-plugin-api';
 import { JSX as JSX_2 } from 'react';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 import { RouteRef } from '@backstage/frontend-plugin-api';
 
@@ -21,7 +21,7 @@ const _default: OverridableFrontendPlugin<
   },
   {},
   {
-    'api:catalog-unprocessed-entities': ExtensionDefinition<{
+    'api:catalog-unprocessed-entities': OverridableExtensionDefinition<{
       kind: 'api';
       name: undefined;
       config: {};
@@ -36,7 +36,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'nav-item:catalog-unprocessed-entities': ExtensionDefinition<{
+    'nav-item:catalog-unprocessed-entities': OverridableExtensionDefinition<{
       kind: 'nav-item';
       name: undefined;
       config: {};
@@ -57,7 +57,7 @@ const _default: OverridableFrontendPlugin<
         routeRef: RouteRef<undefined>;
       };
     }>;
-    'page:catalog-unprocessed-entities': ExtensionDefinition<{
+    'page:catalog-unprocessed-entities': OverridableExtensionDefinition<{
       kind: 'page';
       name: undefined;
       config: {
diff --git a/plugins/catalog/report-alpha.api.md b/plugins/catalog/report-alpha.api.md
index fee768978d..6f63f50b0b 100644
--- a/plugins/catalog/report-alpha.api.md
+++ b/plugins/catalog/report-alpha.api.md
@@ -15,12 +15,12 @@ import { EntityContextMenuItemParams } from '@backstage/plugin-catalog-react/alp
 import { EntityPredicate } from '@backstage/plugin-catalog-react/alpha';
 import { ExtensionBlueprintParams } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { ExtensionInput } from '@backstage/frontend-plugin-api';
 import { ExternalRouteRef } from '@backstage/frontend-plugin-api';
 import { IconComponent } from '@backstage/core-plugin-api';
 import { IconLinkVerticalProps } from '@backstage/core-components';
 import { JSX as JSX_2 } from 'react';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 import { RouteRef } from '@backstage/frontend-plugin-api';
 import { SearchResultItemExtensionComponent } from '@backstage/plugin-search-react/alpha';
@@ -137,7 +137,7 @@ const _default: OverridableFrontendPlugin<
     unregisterRedirect: ExternalRouteRef<undefined>;
   },
   {
-    'api:catalog': ExtensionDefinition<{
+    'api:catalog': OverridableExtensionDefinition<{
       kind: 'api';
       name: undefined;
       config: {};
@@ -152,7 +152,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:catalog/entity-presentation': ExtensionDefinition<{
+    'api:catalog/entity-presentation': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'entity-presentation';
       config: {};
@@ -167,7 +167,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:catalog/starred-entities': ExtensionDefinition<{
+    'api:catalog/starred-entities': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'starred-entities';
       config: {};
@@ -182,7 +182,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'catalog-filter:catalog/kind': ExtensionDefinition<{
+    'catalog-filter:catalog/kind': OverridableExtensionDefinition<{
       config: {
         initialFilter: string;
       };
@@ -205,7 +205,7 @@ const _default: OverridableFrontendPlugin<
         loader: () => Promise<JSX.Element>;
       };
     }>;
-    'catalog-filter:catalog/lifecycle': ExtensionDefinition<{
+    'catalog-filter:catalog/lifecycle': OverridableExtensionDefinition<{
       kind: 'catalog-filter';
       name: 'lifecycle';
       config: {};
@@ -216,7 +216,7 @@ const _default: OverridableFrontendPlugin<
         loader: () => Promise<JSX.Element>;
       };
     }>;
-    'catalog-filter:catalog/list': ExtensionDefinition<{
+    'catalog-filter:catalog/list': OverridableExtensionDefinition<{
       config: {
         initialFilter: 'all' | 'owned' | 'starred';
       };
@@ -239,7 +239,7 @@ const _default: OverridableFrontendPlugin<
         loader: () => Promise<JSX.Element>;
       };
     }>;
-    'catalog-filter:catalog/mode': ExtensionDefinition<{
+    'catalog-filter:catalog/mode': OverridableExtensionDefinition<{
       config: {
         mode: 'all' | 'owners-only' | undefined;
       };
@@ -262,7 +262,7 @@ const _default: OverridableFrontendPlugin<
         loader: () => Promise<JSX.Element>;
       };
     }>;
-    'catalog-filter:catalog/namespace': ExtensionDefinition<{
+    'catalog-filter:catalog/namespace': OverridableExtensionDefinition<{
       kind: 'catalog-filter';
       name: 'namespace';
       config: {};
@@ -273,7 +273,7 @@ const _default: OverridableFrontendPlugin<
         loader: () => Promise<JSX.Element>;
       };
     }>;
-    'catalog-filter:catalog/processing-status': ExtensionDefinition<{
+    'catalog-filter:catalog/processing-status': OverridableExtensionDefinition<{
       kind: 'catalog-filter';
       name: 'processing-status';
       config: {};
@@ -284,7 +284,7 @@ const _default: OverridableFrontendPlugin<
         loader: () => Promise<JSX.Element>;
       };
     }>;
-    'catalog-filter:catalog/tag': ExtensionDefinition<{
+    'catalog-filter:catalog/tag': OverridableExtensionDefinition<{
       kind: 'catalog-filter';
       name: 'tag';
       config: {};
@@ -295,7 +295,7 @@ const _default: OverridableFrontendPlugin<
         loader: () => Promise<JSX.Element>;
       };
     }>;
-    'catalog-filter:catalog/type': ExtensionDefinition<{
+    'catalog-filter:catalog/type': OverridableExtensionDefinition<{
       kind: 'catalog-filter';
       name: 'type';
       config: {};
@@ -306,7 +306,7 @@ const _default: OverridableFrontendPlugin<
         loader: () => Promise<JSX.Element>;
       };
     }>;
-    'entity-card:catalog/about': ExtensionDefinition<{
+    'entity-card:catalog/about': OverridableExtensionDefinition<{
       config: {
         filter: EntityPredicate | undefined;
         type: 'content' | 'summary' | 'info' | undefined;
@@ -373,7 +373,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'entity-card:catalog/depends-on-components': ExtensionDefinition<{
+    'entity-card:catalog/depends-on-components': OverridableExtensionDefinition<{
       kind: 'entity-card';
       name: 'depends-on-components';
       config: {
@@ -414,7 +414,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'entity-card:catalog/depends-on-resources': ExtensionDefinition<{
+    'entity-card:catalog/depends-on-resources': OverridableExtensionDefinition<{
       kind: 'entity-card';
       name: 'depends-on-resources';
       config: {
@@ -455,7 +455,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'entity-card:catalog/has-components': ExtensionDefinition<{
+    'entity-card:catalog/has-components': OverridableExtensionDefinition<{
       kind: 'entity-card';
       name: 'has-components';
       config: {
@@ -496,7 +496,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'entity-card:catalog/has-resources': ExtensionDefinition<{
+    'entity-card:catalog/has-resources': OverridableExtensionDefinition<{
       kind: 'entity-card';
       name: 'has-resources';
       config: {
@@ -537,7 +537,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'entity-card:catalog/has-subcomponents': ExtensionDefinition<{
+    'entity-card:catalog/has-subcomponents': OverridableExtensionDefinition<{
       kind: 'entity-card';
       name: 'has-subcomponents';
       config: {
@@ -578,7 +578,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'entity-card:catalog/has-subdomains': ExtensionDefinition<{
+    'entity-card:catalog/has-subdomains': OverridableExtensionDefinition<{
       kind: 'entity-card';
       name: 'has-subdomains';
       config: {
@@ -619,7 +619,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'entity-card:catalog/has-systems': ExtensionDefinition<{
+    'entity-card:catalog/has-systems': OverridableExtensionDefinition<{
       kind: 'entity-card';
       name: 'has-systems';
       config: {
@@ -660,7 +660,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'entity-card:catalog/labels': ExtensionDefinition<{
+    'entity-card:catalog/labels': OverridableExtensionDefinition<{
       kind: 'entity-card';
       name: 'labels';
       config: {
@@ -701,7 +701,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'entity-card:catalog/links': ExtensionDefinition<{
+    'entity-card:catalog/links': OverridableExtensionDefinition<{
       kind: 'entity-card';
       name: 'links';
       config: {
@@ -742,7 +742,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'entity-content:catalog/overview': ExtensionDefinition<{
+    'entity-content:catalog/overview': OverridableExtensionDefinition<{
       config: {
         path: string | undefined;
         title: string | undefined;
@@ -856,7 +856,7 @@ const _default: OverridableFrontendPlugin<
         filter?: string | EntityPredicate | ((entity: Entity) => boolean);
       };
     }>;
-    'entity-context-menu-item:catalog/copy-entity-url': ExtensionDefinition<{
+    'entity-context-menu-item:catalog/copy-entity-url': OverridableExtensionDefinition<{
       kind: 'entity-context-menu-item';
       name: 'copy-entity-url';
       config: {
@@ -877,7 +877,7 @@ const _default: OverridableFrontendPlugin<
       inputs: {};
       params: EntityContextMenuItemParams;
     }>;
-    'entity-context-menu-item:catalog/inspect-entity': ExtensionDefinition<{
+    'entity-context-menu-item:catalog/inspect-entity': OverridableExtensionDefinition<{
       kind: 'entity-context-menu-item';
       name: 'inspect-entity';
       config: {
@@ -898,7 +898,7 @@ const _default: OverridableFrontendPlugin<
       inputs: {};
       params: EntityContextMenuItemParams;
     }>;
-    'entity-context-menu-item:catalog/unregister-entity': ExtensionDefinition<{
+    'entity-context-menu-item:catalog/unregister-entity': OverridableExtensionDefinition<{
       kind: 'entity-context-menu-item';
       name: 'unregister-entity';
       config: {
@@ -919,7 +919,7 @@ const _default: OverridableFrontendPlugin<
       inputs: {};
       params: EntityContextMenuItemParams;
     }>;
-    'entity-icon-link:catalog/view-source': ExtensionDefinition<{
+    'entity-icon-link:catalog/view-source': OverridableExtensionDefinition<{
       kind: 'entity-icon-link';
       name: 'view-source';
       config: {
@@ -958,7 +958,7 @@ const _default: OverridableFrontendPlugin<
         filter?: EntityPredicate | ((entity: Entity) => boolean);
       };
     }>;
-    'nav-item:catalog': ExtensionDefinition<{
+    'nav-item:catalog': OverridableExtensionDefinition<{
       kind: 'nav-item';
       name: undefined;
       config: {};
@@ -979,7 +979,7 @@ const _default: OverridableFrontendPlugin<
         routeRef: RouteRef<undefined>;
       };
     }>;
-    'page:catalog': ExtensionDefinition<{
+    'page:catalog': OverridableExtensionDefinition<{
       config: {
         pagination:
           | boolean
@@ -1031,7 +1031,7 @@ const _default: OverridableFrontendPlugin<
         routeRef?: RouteRef;
       };
     }>;
-    'page:catalog/entity': ExtensionDefinition<{
+    'page:catalog/entity': OverridableExtensionDefinition<{
       config: {
         groups:
           | Record<
@@ -1152,7 +1152,7 @@ const _default: OverridableFrontendPlugin<
         routeRef?: RouteRef;
       };
     }>;
-    'search-result-list-item:catalog': ExtensionDefinition<{
+    'search-result-list-item:catalog': OverridableExtensionDefinition<{
       kind: 'search-result-list-item';
       name: undefined;
       config: {
diff --git a/plugins/devtools/report-alpha.api.md b/plugins/devtools/report-alpha.api.md
index 7696267c35..c114924f4a 100644
--- a/plugins/devtools/report-alpha.api.md
+++ b/plugins/devtools/report-alpha.api.md
@@ -8,9 +8,9 @@ import { AnyRouteRefParams } from '@backstage/frontend-plugin-api';
 import { ApiFactory } from '@backstage/frontend-plugin-api';
 import { ExtensionBlueprintParams } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { IconComponent } from '@backstage/core-plugin-api';
 import { JSX as JSX_2 } from 'react';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 import { RouteRef } from '@backstage/frontend-plugin-api';
 
@@ -21,7 +21,7 @@ const _default: OverridableFrontendPlugin<
   },
   {},
   {
-    'api:devtools': ExtensionDefinition<{
+    'api:devtools': OverridableExtensionDefinition<{
       kind: 'api';
       name: undefined;
       config: {};
@@ -36,7 +36,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'nav-item:devtools': ExtensionDefinition<{
+    'nav-item:devtools': OverridableExtensionDefinition<{
       kind: 'nav-item';
       name: undefined;
       config: {};
@@ -57,7 +57,7 @@ const _default: OverridableFrontendPlugin<
         routeRef: RouteRef<undefined>;
       };
     }>;
-    'page:devtools': ExtensionDefinition<{
+    'page:devtools': OverridableExtensionDefinition<{
       kind: 'page';
       name: undefined;
       config: {
diff --git a/plugins/home/report-alpha.api.md b/plugins/home/report-alpha.api.md
index 8dbbb99b5d..58ceef751d 100644
--- a/plugins/home/report-alpha.api.md
+++ b/plugins/home/report-alpha.api.md
@@ -9,9 +9,9 @@ import { ApiFactory } from '@backstage/frontend-plugin-api';
 import { ConfigurableExtensionDataRef } from '@backstage/frontend-plugin-api';
 import { ExtensionBlueprintParams } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { ExtensionInput } from '@backstage/frontend-plugin-api';
 import { JSX as JSX_2 } from 'react';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 import { RouteRef } from '@backstage/frontend-plugin-api';
 import { TranslationRef } from '@backstage/frontend-plugin-api';
@@ -23,7 +23,7 @@ const _default: OverridableFrontendPlugin<
   },
   {},
   {
-    'api:home/visits': ExtensionDefinition<{
+    'api:home/visits': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'visits';
       config: {};
@@ -38,7 +38,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'app-root-element:home/visit-listener': ExtensionDefinition<{
+    'app-root-element:home/visit-listener': OverridableExtensionDefinition<{
       kind: 'app-root-element';
       name: 'visit-listener';
       config: {};
@@ -49,7 +49,7 @@ const _default: OverridableFrontendPlugin<
         element: JSX.Element;
       };
     }>;
-    'page:home': ExtensionDefinition<{
+    'page:home': OverridableExtensionDefinition<{
       config: {
         path: string | undefined;
       };
diff --git a/plugins/kubernetes/report-alpha.api.md b/plugins/kubernetes/report-alpha.api.md
index 9bcbeb4ede..571e09d546 100644
--- a/plugins/kubernetes/report-alpha.api.md
+++ b/plugins/kubernetes/report-alpha.api.md
@@ -11,8 +11,8 @@ import { Entity } from '@backstage/catalog-model';
 import { EntityPredicate } from '@backstage/plugin-catalog-react/alpha';
 import { ExtensionBlueprintParams } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { JSX as JSX_2 } from 'react';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 import { RouteRef } from '@backstage/frontend-plugin-api';
 import { TranslationRef } from '@backstage/core-plugin-api/alpha';
@@ -24,7 +24,7 @@ const _default: OverridableFrontendPlugin<
   },
   {},
   {
-    'api:kubernetes': ExtensionDefinition<{
+    'api:kubernetes': OverridableExtensionDefinition<{
       kind: 'api';
       name: undefined;
       config: {};
@@ -39,7 +39,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:kubernetes/auth-providers': ExtensionDefinition<{
+    'api:kubernetes/auth-providers': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'auth-providers';
       config: {};
@@ -54,7 +54,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:kubernetes/cluster-link-formatter': ExtensionDefinition<{
+    'api:kubernetes/cluster-link-formatter': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'cluster-link-formatter';
       config: {};
@@ -69,7 +69,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:kubernetes/proxy': ExtensionDefinition<{
+    'api:kubernetes/proxy': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'proxy';
       config: {};
@@ -84,7 +84,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'entity-content:kubernetes/kubernetes': ExtensionDefinition<{
+    'entity-content:kubernetes/kubernetes': OverridableExtensionDefinition<{
       kind: 'entity-content';
       name: 'kubernetes';
       config: {
@@ -144,7 +144,7 @@ const _default: OverridableFrontendPlugin<
         filter?: string | EntityPredicate | ((entity: Entity) => boolean);
       };
     }>;
-    'page:kubernetes': ExtensionDefinition<{
+    'page:kubernetes': OverridableExtensionDefinition<{
       kind: 'page';
       name: undefined;
       config: {
diff --git a/plugins/mui-to-bui/report.api.md b/plugins/mui-to-bui/report.api.md
index 593130ea86..519f0c1bc7 100644
--- a/plugins/mui-to-bui/report.api.md
+++ b/plugins/mui-to-bui/report.api.md
@@ -6,9 +6,9 @@
 import { AnyRouteRefParams } from '@backstage/frontend-plugin-api';
 import { BackstagePlugin } from '@backstage/core-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { JSX as JSX_2 } from 'react';
 import { JSX as JSX_3 } from 'react/jsx-runtime';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 import { RouteRef } from '@backstage/frontend-plugin-api';
 import { RouteRef as RouteRef_2 } from '@backstage/core-plugin-api';
@@ -31,7 +31,7 @@ const _default: OverridableFrontendPlugin<
   },
   {},
   {
-    'page:mui-to-bui': ExtensionDefinition<{
+    'page:mui-to-bui': OverridableExtensionDefinition<{
       kind: 'page';
       name: undefined;
       config: {
diff --git a/plugins/notifications/report-alpha.api.md b/plugins/notifications/report-alpha.api.md
index bec9d5ae13..713d4c3998 100644
--- a/plugins/notifications/report-alpha.api.md
+++ b/plugins/notifications/report-alpha.api.md
@@ -8,8 +8,8 @@ import { AnyRouteRefParams } from '@backstage/frontend-plugin-api';
 import { ApiFactory } from '@backstage/frontend-plugin-api';
 import { ExtensionBlueprintParams } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { JSX as JSX_2 } from 'react';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 import { RouteRef } from '@backstage/frontend-plugin-api';
 
@@ -20,7 +20,7 @@ const _default: OverridableFrontendPlugin<
   },
   {},
   {
-    'api:notifications': ExtensionDefinition<{
+    'api:notifications': OverridableExtensionDefinition<{
       kind: 'api';
       name: undefined;
       config: {};
@@ -35,7 +35,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'page:notifications': ExtensionDefinition<{
+    'page:notifications': OverridableExtensionDefinition<{
       kind: 'page';
       name: undefined;
       config: {
diff --git a/plugins/org/report-alpha.api.md b/plugins/org/report-alpha.api.md
index 8cefd7dd11..3e113868a6 100644
--- a/plugins/org/report-alpha.api.md
+++ b/plugins/org/report-alpha.api.md
@@ -7,10 +7,10 @@ import { Entity } from '@backstage/catalog-model';
 import { EntityCardType } from '@backstage/plugin-catalog-react/alpha';
 import { EntityPredicate } from '@backstage/plugin-catalog-react/alpha';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { ExtensionInput } from '@backstage/frontend-plugin-api';
 import { ExternalRouteRef } from '@backstage/frontend-plugin-api';
 import { JSX as JSX_2 } from 'react';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 import { TranslationRef } from '@backstage/frontend-plugin-api';
 
@@ -21,7 +21,7 @@ const _default: OverridableFrontendPlugin<
     catalogIndex: ExternalRouteRef<undefined>;
   },
   {
-    'entity-card:org/group-profile': ExtensionDefinition<{
+    'entity-card:org/group-profile': OverridableExtensionDefinition<{
       kind: 'entity-card';
       name: 'group-profile';
       config: {
@@ -62,7 +62,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'entity-card:org/members-list': ExtensionDefinition<{
+    'entity-card:org/members-list': OverridableExtensionDefinition<{
       config: {
         initialRelationAggregation: 'direct' | 'aggregated' | undefined;
         showAggregateMembersToggle: boolean | undefined;
@@ -117,7 +117,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'entity-card:org/ownership': ExtensionDefinition<{
+    'entity-card:org/ownership': OverridableExtensionDefinition<{
       config: {
         initialRelationAggregation: 'direct' | 'aggregated' | undefined;
         showAggregateMembersToggle: boolean | undefined;
@@ -172,7 +172,7 @@ const _default: OverridableFrontendPlugin<
         type?: EntityCardType;
       };
     }>;
-    'entity-card:org/user-profile': ExtensionDefinition<{
+    'entity-card:org/user-profile': OverridableExtensionDefinition<{
       config: {
         maxRelations: number | undefined;
         hideIcons: boolean;
diff --git a/plugins/scaffolder-react/report-alpha.api.md b/plugins/scaffolder-react/report-alpha.api.md
index 6f81cd8a32..7497902e5b 100644
--- a/plugins/scaffolder-react/report-alpha.api.md
+++ b/plugins/scaffolder-react/report-alpha.api.md
@@ -15,7 +15,6 @@ import { Dispatch } from 'react';
 import { ExtensionBlueprint } from '@backstage/frontend-plugin-api';
 import { ExtensionBlueprintParams } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { ExtensionInput } from '@backstage/frontend-plugin-api';
 import { FieldExtensionComponentProps } from '@backstage/plugin-scaffolder-react';
 import { FieldExtensionOptions } from '@backstage/plugin-scaffolder-react';
@@ -27,6 +26,7 @@ import { JsonObject } from '@backstage/types';
 import { JsonValue } from '@backstage/types';
 import { JSX as JSX_2 } from 'react/jsx-runtime';
 import { LayoutOptions } from '@backstage/plugin-scaffolder-react';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { Overrides } from '@material-ui/core/styles/overrides';
 import { PropsWithChildren } from 'react';
 import { ReactElement } from 'react';
@@ -205,7 +205,7 @@ export type FormFieldExtensionData<
 };
 
 // @alpha (undocumented)
-export const formFieldsApi: ExtensionDefinition<{
+export const formFieldsApi: OverridableExtensionDefinition<{
   config: {};
   configInput: {};
   output: ExtensionDataRef<AnyApiFactory, 'core.api.factory', {}>;
diff --git a/plugins/scaffolder/report-alpha.api.md b/plugins/scaffolder/report-alpha.api.md
index a5dd2a22d1..b6c5af9f17 100644
--- a/plugins/scaffolder/report-alpha.api.md
+++ b/plugins/scaffolder/report-alpha.api.md
@@ -13,7 +13,6 @@ import { Entity } from '@backstage/catalog-model';
 import { EntityPredicate } from '@backstage/plugin-catalog-react/alpha';
 import { ExtensionBlueprintParams } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { ExtensionInput } from '@backstage/frontend-plugin-api';
 import { ExternalRouteRef } from '@backstage/frontend-plugin-api';
 import { FieldExtensionOptions } from '@backstage/plugin-scaffolder-react';
@@ -25,6 +24,7 @@ import { IconComponent } from '@backstage/core-plugin-api';
 import { IconLinkVerticalProps } from '@backstage/core-components';
 import { JSX as JSX_2 } from 'react';
 import { LayoutOptions } from '@backstage/plugin-scaffolder-react';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 import { PathParams } from '@backstage/core-plugin-api';
 import { ReviewStepProps } from '@backstage/plugin-scaffolder-react';
@@ -58,7 +58,7 @@ const _default: OverridableFrontendPlugin<
     }>;
   },
   {
-    'api:scaffolder': ExtensionDefinition<{
+    'api:scaffolder': OverridableExtensionDefinition<{
       kind: 'api';
       name: undefined;
       config: {};
@@ -73,7 +73,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:scaffolder/form-decorators': ExtensionDefinition<{
+    'api:scaffolder/form-decorators': OverridableExtensionDefinition<{
       config: {};
       configInput: {};
       output: ExtensionDataRef<AnyApiFactory, 'core.api.factory', {}>;
@@ -100,7 +100,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:scaffolder/form-fields': ExtensionDefinition<{
+    'api:scaffolder/form-fields': OverridableExtensionDefinition<{
       config: {};
       configInput: {};
       output: ExtensionDataRef<AnyApiFactory, 'core.api.factory', {}>;
@@ -127,7 +127,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'entity-icon-link:scaffolder/launch-template': ExtensionDefinition<{
+    'entity-icon-link:scaffolder/launch-template': OverridableExtensionDefinition<{
       kind: 'entity-icon-link';
       name: 'launch-template';
       config: {
@@ -166,7 +166,7 @@ const _default: OverridableFrontendPlugin<
         filter?: EntityPredicate | ((entity: Entity) => boolean);
       };
     }>;
-    'nav-item:scaffolder': ExtensionDefinition<{
+    'nav-item:scaffolder': OverridableExtensionDefinition<{
       kind: 'nav-item';
       name: undefined;
       config: {};
@@ -187,7 +187,7 @@ const _default: OverridableFrontendPlugin<
         routeRef: RouteRef<undefined>;
       };
     }>;
-    'page:scaffolder': ExtensionDefinition<{
+    'page:scaffolder': OverridableExtensionDefinition<{
       config: {
         path: string | undefined;
       };
@@ -226,7 +226,7 @@ const _default: OverridableFrontendPlugin<
         routeRef?: RouteRef;
       };
     }>;
-    'scaffolder-form-field:scaffolder/entity-name-picker': ExtensionDefinition<{
+    'scaffolder-form-field:scaffolder/entity-name-picker': OverridableExtensionDefinition<{
       kind: 'scaffolder-form-field';
       name: 'entity-name-picker';
       config: {};
@@ -241,7 +241,7 @@ const _default: OverridableFrontendPlugin<
         field: () => Promise<FormField>;
       };
     }>;
-    'scaffolder-form-field:scaffolder/entity-picker': ExtensionDefinition<{
+    'scaffolder-form-field:scaffolder/entity-picker': OverridableExtensionDefinition<{
       kind: 'scaffolder-form-field';
       name: 'entity-picker';
       config: {};
@@ -256,7 +256,7 @@ const _default: OverridableFrontendPlugin<
         field: () => Promise<FormField>;
       };
     }>;
-    'scaffolder-form-field:scaffolder/entity-tags-picker': ExtensionDefinition<{
+    'scaffolder-form-field:scaffolder/entity-tags-picker': OverridableExtensionDefinition<{
       kind: 'scaffolder-form-field';
       name: 'entity-tags-picker';
       config: {};
@@ -271,7 +271,7 @@ const _default: OverridableFrontendPlugin<
         field: () => Promise<FormField>;
       };
     }>;
-    'scaffolder-form-field:scaffolder/multi-entity-picker': ExtensionDefinition<{
+    'scaffolder-form-field:scaffolder/multi-entity-picker': OverridableExtensionDefinition<{
       kind: 'scaffolder-form-field';
       name: 'multi-entity-picker';
       config: {};
@@ -286,7 +286,7 @@ const _default: OverridableFrontendPlugin<
         field: () => Promise<FormField>;
       };
     }>;
-    'scaffolder-form-field:scaffolder/my-groups-picker': ExtensionDefinition<{
+    'scaffolder-form-field:scaffolder/my-groups-picker': OverridableExtensionDefinition<{
       kind: 'scaffolder-form-field';
       name: 'my-groups-picker';
       config: {};
@@ -301,7 +301,7 @@ const _default: OverridableFrontendPlugin<
         field: () => Promise<FormField>;
       };
     }>;
-    'scaffolder-form-field:scaffolder/owned-entity-picker': ExtensionDefinition<{
+    'scaffolder-form-field:scaffolder/owned-entity-picker': OverridableExtensionDefinition<{
       kind: 'scaffolder-form-field';
       name: 'owned-entity-picker';
       config: {};
@@ -316,7 +316,7 @@ const _default: OverridableFrontendPlugin<
         field: () => Promise<FormField>;
       };
     }>;
-    'scaffolder-form-field:scaffolder/owner-picker': ExtensionDefinition<{
+    'scaffolder-form-field:scaffolder/owner-picker': OverridableExtensionDefinition<{
       kind: 'scaffolder-form-field';
       name: 'owner-picker';
       config: {};
@@ -331,7 +331,7 @@ const _default: OverridableFrontendPlugin<
         field: () => Promise<FormField>;
       };
     }>;
-    'scaffolder-form-field:scaffolder/repo-branch-picker': ExtensionDefinition<{
+    'scaffolder-form-field:scaffolder/repo-branch-picker': OverridableExtensionDefinition<{
       kind: 'scaffolder-form-field';
       name: 'repo-branch-picker';
       config: {};
@@ -346,7 +346,7 @@ const _default: OverridableFrontendPlugin<
         field: () => Promise<FormField>;
       };
     }>;
-    'scaffolder-form-field:scaffolder/repo-url-picker': ExtensionDefinition<{
+    'scaffolder-form-field:scaffolder/repo-url-picker': OverridableExtensionDefinition<{
       kind: 'scaffolder-form-field';
       name: 'repo-url-picker';
       config: {};
@@ -378,7 +378,7 @@ export class DefaultScaffolderFormDecoratorsApi
 }
 
 // @alpha (undocumented)
-export const formDecoratorsApi: ExtensionDefinition<{
+export const formDecoratorsApi: OverridableExtensionDefinition<{
   config: {};
   configInput: {};
   output: ExtensionDataRef<AnyApiFactory, 'core.api.factory', {}>;
diff --git a/plugins/search/report-alpha.api.md b/plugins/search/report-alpha.api.md
index 9a385c6fae..5ac036ca68 100644
--- a/plugins/search/report-alpha.api.md
+++ b/plugins/search/report-alpha.api.md
@@ -9,10 +9,10 @@ import { ApiFactory } from '@backstage/core-plugin-api';
 import { ConfigurableExtensionDataRef } from '@backstage/frontend-plugin-api';
 import { ExtensionBlueprintParams } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { ExtensionInput } from '@backstage/frontend-plugin-api';
 import { IconComponent } from '@backstage/core-plugin-api';
 import { JSX as JSX_2 } from 'react';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 import { RouteRef } from '@backstage/frontend-plugin-api';
 import { SearchFilterExtensionComponent } from '@backstage/plugin-search-react/alpha';
@@ -27,7 +27,7 @@ const _default: OverridableFrontendPlugin<
   },
   {},
   {
-    'api:search': ExtensionDefinition<{
+    'api:search': OverridableExtensionDefinition<{
       kind: 'api';
       name: undefined;
       config: {};
@@ -42,7 +42,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'nav-item:search': ExtensionDefinition<{
+    'nav-item:search': OverridableExtensionDefinition<{
       kind: 'nav-item';
       name: undefined;
       config: {};
@@ -63,7 +63,7 @@ const _default: OverridableFrontendPlugin<
         routeRef: RouteRef<undefined>;
       };
     }>;
-    'page:search': ExtensionDefinition<{
+    'page:search': OverridableExtensionDefinition<{
       config: {
         noTrack: boolean;
       } & {
@@ -143,7 +143,7 @@ const _default: OverridableFrontendPlugin<
 export default _default;
 
 // @alpha (undocumented)
-export const searchApi: ExtensionDefinition<{
+export const searchApi: OverridableExtensionDefinition<{
   kind: 'api';
   name: undefined;
   config: {};
@@ -160,7 +160,7 @@ export const searchApi: ExtensionDefinition<{
 }>;
 
 // @alpha (undocumented)
-export const searchNavItem: ExtensionDefinition<{
+export const searchNavItem: OverridableExtensionDefinition<{
   kind: 'nav-item';
   name: undefined;
   config: {};
@@ -183,7 +183,7 @@ export const searchNavItem: ExtensionDefinition<{
 }>;
 
 // @alpha (undocumented)
-export const searchPage: ExtensionDefinition<{
+export const searchPage: OverridableExtensionDefinition<{
   config: {
     noTrack: boolean;
   } & {
diff --git a/plugins/signals/report-alpha.api.md b/plugins/signals/report-alpha.api.md
index 91bd2b6726..b1cae370ed 100644
--- a/plugins/signals/report-alpha.api.md
+++ b/plugins/signals/report-alpha.api.md
@@ -7,7 +7,7 @@ import { AnyApiFactory } from '@backstage/frontend-plugin-api';
 import { ApiFactory } from '@backstage/frontend-plugin-api';
 import { ExtensionBlueprintParams } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 
 // @alpha (undocumented)
@@ -15,7 +15,7 @@ const _default: OverridableFrontendPlugin<
   {},
   {},
   {
-    'api:signals': ExtensionDefinition<{
+    'api:signals': OverridableExtensionDefinition<{
       kind: 'api';
       name: undefined;
       config: {};
diff --git a/plugins/techdocs/report-alpha.api.md b/plugins/techdocs/report-alpha.api.md
index 076b2c0cfe..8a17625ac2 100644
--- a/plugins/techdocs/report-alpha.api.md
+++ b/plugins/techdocs/report-alpha.api.md
@@ -12,11 +12,11 @@ import { Entity } from '@backstage/catalog-model';
 import { EntityPredicate } from '@backstage/plugin-catalog-react/alpha';
 import { ExtensionBlueprintParams } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { ExtensionInput } from '@backstage/frontend-plugin-api';
 import { IconComponent } from '@backstage/core-plugin-api';
 import { IconLinkVerticalProps } from '@backstage/core-components';
 import { JSX as JSX_2 } from 'react';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 import { RouteRef } from '@backstage/frontend-plugin-api';
 import { SearchResultItemExtensionComponent } from '@backstage/plugin-search-react/alpha';
@@ -37,7 +37,7 @@ const _default: OverridableFrontendPlugin<
   },
   {},
   {
-    'api:techdocs': ExtensionDefinition<{
+    'api:techdocs': OverridableExtensionDefinition<{
       kind: 'api';
       name: undefined;
       config: {};
@@ -52,7 +52,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'api:techdocs/storage': ExtensionDefinition<{
+    'api:techdocs/storage': OverridableExtensionDefinition<{
       kind: 'api';
       name: 'storage';
       config: {};
@@ -67,7 +67,7 @@ const _default: OverridableFrontendPlugin<
         params: ApiFactory<TApi, TImpl, TDeps>,
       ) => ExtensionBlueprintParams<AnyApiFactory>;
     }>;
-    'empty-state:techdocs/entity-content': ExtensionDefinition<{
+    'empty-state:techdocs/entity-content': OverridableExtensionDefinition<{
       config: {};
       configInput: {};
       output: ExtensionDataRef<
@@ -90,7 +90,7 @@ const _default: OverridableFrontendPlugin<
       kind: 'empty-state';
       name: 'entity-content';
     }>;
-    'entity-content:techdocs': ExtensionDefinition<{
+    'entity-content:techdocs': OverridableExtensionDefinition<{
       config: {
         path: string | undefined;
         title: string | undefined;
@@ -175,7 +175,7 @@ const _default: OverridableFrontendPlugin<
         filter?: string | EntityPredicate | ((entity: Entity) => boolean);
       };
     }>;
-    'entity-icon-link:techdocs/read-docs': ExtensionDefinition<{
+    'entity-icon-link:techdocs/read-docs': OverridableExtensionDefinition<{
       kind: 'entity-icon-link';
       name: 'read-docs';
       config: {
@@ -214,7 +214,7 @@ const _default: OverridableFrontendPlugin<
         filter?: EntityPredicate | ((entity: Entity) => boolean);
       };
     }>;
-    'nav-item:techdocs': ExtensionDefinition<{
+    'nav-item:techdocs': OverridableExtensionDefinition<{
       kind: 'nav-item';
       name: undefined;
       config: {};
@@ -235,7 +235,7 @@ const _default: OverridableFrontendPlugin<
         routeRef: RouteRef<undefined>;
       };
     }>;
-    'page:techdocs': ExtensionDefinition<{
+    'page:techdocs': OverridableExtensionDefinition<{
       kind: 'page';
       name: undefined;
       config: {
@@ -262,7 +262,7 @@ const _default: OverridableFrontendPlugin<
         routeRef?: RouteRef;
       };
     }>;
-    'page:techdocs/reader': ExtensionDefinition<{
+    'page:techdocs/reader': OverridableExtensionDefinition<{
       config: {
         path: string | undefined;
       };
@@ -301,7 +301,7 @@ const _default: OverridableFrontendPlugin<
         routeRef?: RouteRef;
       };
     }>;
-    'search-result-list-item:techdocs': ExtensionDefinition<{
+    'search-result-list-item:techdocs': OverridableExtensionDefinition<{
       config: {
         title: string | undefined;
         lineClamp: number;
@@ -345,7 +345,7 @@ const _default: OverridableFrontendPlugin<
 export default _default;
 
 // @alpha (undocumented)
-export const techDocsSearchResultListItemExtension: ExtensionDefinition<{
+export const techDocsSearchResultListItemExtension: OverridableExtensionDefinition<{
   config: {
     title: string | undefined;
     lineClamp: number;
diff --git a/plugins/user-settings/report-alpha.api.md b/plugins/user-settings/report-alpha.api.md
index 1c8e844d05..a900e5600c 100644
--- a/plugins/user-settings/report-alpha.api.md
+++ b/plugins/user-settings/report-alpha.api.md
@@ -6,10 +6,10 @@
 import { AnyRouteRefParams } from '@backstage/frontend-plugin-api';
 import { ConfigurableExtensionDataRef } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
-import { ExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { ExtensionInput } from '@backstage/frontend-plugin-api';
 import { IconComponent } from '@backstage/core-plugin-api';
 import { JSX as JSX_2 } from 'react';
+import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
 import { RouteRef } from '@backstage/frontend-plugin-api';
 import { TranslationRef } from '@backstage/core-plugin-api/alpha';
@@ -21,7 +21,7 @@ const _default: OverridableFrontendPlugin<
   },
   {},
   {
-    'nav-item:user-settings': ExtensionDefinition<{
+    'nav-item:user-settings': OverridableExtensionDefinition<{
       kind: 'nav-item';
       name: undefined;
       config: {};
@@ -42,7 +42,7 @@ const _default: OverridableFrontendPlugin<
         routeRef: RouteRef<undefined>;
       };
     }>;
-    'page:user-settings': ExtensionDefinition<{
+    'page:user-settings': OverridableExtensionDefinition<{
       config: {
         path: string | undefined;
       };
@@ -82,7 +82,7 @@ const _default: OverridableFrontendPlugin<
 export default _default;
 
 // @alpha (undocumented)
-export const settingsNavItem: ExtensionDefinition<{
+export const settingsNavItem: OverridableExtensionDefinition<{
   kind: 'nav-item';
   name: undefined;
   config: {};