# Open a desktop WebRTC signaling session.

`GET /v1/desktop/stream/signaling`

Upgrades the connection to a WebSocket used for WebRTC signaling between
the browser client and the desktop streaming process. Also accepts mouse
and keyboard input frames as a fallback transport.

## Parameters

| Name | In | Required | Type | Description |
| --- | --- | --- | --- | --- |
| `access_token` | query | No | string | Bearer token alternative for WS auth |

### Parameter schemas

```json
[
  {
    "name": "access_token",
    "in": "query",
    "description": "Bearer token alternative for WS auth",
    "required": false,
    "schema": {
      "type": "string",
      "nullable": true
    }
  }
]
```

## Responses

### 101

WebSocket upgraded

### 409

Desktop runtime or streaming session is not ready

Content type: `application/json`

```json
{
  "schema": {
    "$ref": "#/components/schemas/ProblemDetails"
  }
}
```

Related schemas: [ProblemDetails](/sandbox-agent/docs/api-reference/schemas/problemdetails/).

### 502

Desktop stream failed

Content type: `application/json`

```json
{
  "schema": {
    "$ref": "#/components/schemas/ProblemDetails"
  }
}
```

Related schemas: [ProblemDetails](/sandbox-agent/docs/api-reference/schemas/problemdetails/).