diff --git a/apps/webhook_listeners/lib/Controller/WebhooksController.php b/apps/webhook_listeners/lib/Controller/WebhooksController.php
index a4de0c8d342..852d0db65da 100644
--- a/apps/webhook_listeners/lib/Controller/WebhooksController.php
+++ b/apps/webhook_listeners/lib/Controller/WebhooksController.php
@@ -107,6 +107,7 @@ class WebhooksController extends OCSController {
 	 * @param string $uri Webhook URI endpoint
 	 * @param string $event Event class name to listen to
 	 * @param ?array<string,mixed> $eventFilter Mongo filter to apply to the serialized data to decide if firing
+	 * @param ?string $userIdFilter User id to filter on. The webhook will only be called by requests from this user. Empty or null means no filtering.
 	 * @param ?array<string,string> $headers Array of headers to send
 	 * @param "none"|"headers"|null $authMethod Authentication method to use
 	 * @param ?array<string,mixed> $authData Array of data for authentication
@@ -175,6 +176,7 @@ class WebhooksController extends OCSController {
 	 * @param string $uri Webhook URI endpoint
 	 * @param string $event Event class name to listen to
 	 * @param ?array<string,mixed> $eventFilter Mongo filter to apply to the serialized data to decide if firing
+	 * @param ?string $userIdFilter User id to filter on. The webhook will only be called by requests from this user. Empty or null means no filtering.
 	 * @param ?array<string,string> $headers Array of headers to send
 	 * @param "none"|"headers"|null $authMethod Authentication method to use
 	 * @param ?array<string,mixed> $authData Array of data for authentication
diff --git a/apps/webhook_listeners/openapi.json b/apps/webhook_listeners/openapi.json
index 01a9c59e6c2..b460fea0b02 100644
--- a/apps/webhook_listeners/openapi.json
+++ b/apps/webhook_listeners/openapi.json
@@ -75,6 +75,9 @@
                             "type": "object"
                         }
                     },
+                    "userIdFilter": {
+                        "type": "string"
+                    },
                     "headers": {
                         "type": "object",
                         "additionalProperties": {
@@ -223,6 +226,11 @@
                                             "type": "object"
                                         }
                                     },
+                                    "userIdFilter": {
+                                        "type": "string",
+                                        "nullable": true,
+                                        "description": "User id to filter on. The webhook will only be called by requests from this user. Empty or null means no filtering."
+                                    },
                                     "headers": {
                                         "type": "object",
                                         "nullable": true,
@@ -501,6 +509,11 @@
                                             "type": "object"
                                         }
                                     },
+                                    "userIdFilter": {
+                                        "type": "string",
+                                        "nullable": true,
+                                        "description": "User id to filter on. The webhook will only be called by requests from this user. Empty or null means no filtering."
+                                    },
                                     "headers": {
                                         "type": "object",
                                         "nullable": true,