diff --git a/src/definition/ui/IUIActionButtonDescriptor.ts b/src/definition/ui/IUIActionButtonDescriptor.ts
index 04b87d9ce..c17bbdb60 100644
--- a/src/definition/ui/IUIActionButtonDescriptor.ts
+++ b/src/definition/ui/IUIActionButtonDescriptor.ts
@@ -34,6 +34,7 @@ export interface IUIActionButtonDescriptor {
     labelI18n: string;
     variant?: 'danger';
     when?: IUActionButtonWhen;
+    category?: 'default' | 'ai';
 }
 export interface IUIActionButton extends IUIActionButtonDescriptor {
     appId: string;