# POST /ui/inspector

Schedule opening or closing the device inspector.

This is a device HTTP route. Set `DEVICE_URL` to your reachable device URL; [connection and examples](https://mcp.applesauceos.com/doc/http.md) explain how. Do not append this path to the public MCP URL.

## Parameters

| Parameter | Type | Meaning |
| --- | --- | --- |
| `action` | JSON string | open or close. |

## Response

JSON {scheduled:action}.

## Example

```sh
curl --fail-with-body "$DEVICE_URL/ui/inspector" \
  -H 'Content-Type: application/json' \
  -d '{"action":"close"}'
```

## Notes

Scheduling is not proof the overlay has already changed. Close it before external UI mutations or observation screenshots.

Check the HTTP status and any JSON error. [HTTP workflows and error handling](https://mcp.applesauceos.com/doc/http-guide.md) explain shared limits. [All endpoints](https://mcp.applesauceos.com/doc/http.md).