diff --git a/api/notification/notificationContent.d.ts b/api/notification/notificationContent.d.ts
index c3a20c3070a0698ac1d692d512eb0618f7133400..778d9147b3e1b2ab98336106a5d7ce8acc6f95da 100644
--- a/api/notification/notificationContent.d.ts
+++ b/api/notification/notificationContent.d.ts
@@ -310,6 +310,17 @@ export interface NotificationLiveViewContent extends NotificationBasicContent {
    * @since 12
    */
   isLocalUpdateOnly?: boolean;
+
+  /**
+   * The WantAgent instance of the clickAction field in the live view extension area.
+   *
+   * @type { ?WantAgent }
+   * @syscap SystemCapability.Notification.Notification
+   * @systemapi
+   * @since arkts{ '1.1':'20','1.2':'20'}
+   * @arkts 1.1&1.2
+   */
+  extensionWantAgent?: WantAgent;
 }
 
 /**