diff --git a/www/schema.json b/www/schema.json
index 61c513a5..013712bc 100644
--- a/www/schema.json
+++ b/www/schema.json
@@ -338,12 +338,13 @@
             "default": false
           },
           "motion": {
-            "description": "Motion detection mode for HKSV: `api` (triggered via HTTP API), `continuous` (always report motion), or `detect` (automatic detection based on P-frame size analysis)",
+            "description": "Motion detection mode for HKSV: `api` (triggered via HTTP API), `continuous` (always report motion), `detect` (automatic detection based on P-frame size analysis), or `onvif` (use ONVIF event subscription from the camera)",
             "type": "string",
             "enum": [
               "api",
               "continuous",
-              "detect"
+              "detect",
+              "onvif"
             ],
             "default": "api"
           },
@@ -352,6 +353,15 @@
             "type": "number",
             "default": 2.0
           },
+          "motion_hold_time": {
+            "description": "Duration in seconds to keep motion active after the last trigger. Used with `onvif` mode to ensure Home Hub has enough time to start recording.",
+            "type": "number",
+            "default": 30
+          },
+          "onvif_url": {
+            "description": "ONVIF device URL for motion detection. If not set, auto-detected from `onvif://` stream sources.",
+            "type": "string"
+          },
           "speaker": {
             "description": "Include Speaker service for 2-way audio (talk through the camera). Only enable if your camera has a physical speaker.",
             "type": "boolean",