add guards to reject missing sub commands

frigate/api/camera.py

@@ -1224,6 +1224,15 @@ def camera_set(
             status_code=400,
         )
 
+    if not sub_command and feature in _SUB_COMMAND_FEATURES:
+        return JSONResponse(
+            content={
+                "success": False,
+                "message": f"Feature '{feature}' requires a sub-command (e.g. mask or zone name)",
+            },
+            status_code=400,
+        )
+
     if camera_name == "*":
         cameras = list(frigate_config.cameras.keys())
     elif camera_name not in frigate_config.cameras:

frigate/comms/dispatcher.py

@@ -118,10 +118,21 @@ class Dispatcher:
 
             try:
                 if command_type == "set":
+                    # Commands that require a sub-command (mask/zone name)
+                    sub_command_required = {
+                        "motion_mask",
+                        "object_mask",
+                        "zone",
+                    }
                     if sub_command:
                         self._camera_settings_handlers[command](
                             camera_name, sub_command, payload
                         )
+                    elif command in sub_command_required:
+                        logger.error(
+                            "Command %s requires a sub-command (mask/zone name)",
+                            command,
+                        )
                     else:
                         self._camera_settings_handlers[command](camera_name, payload)
                 elif command_type == "ptz":