> ## Documentation Index
> Fetch the complete documentation index at: https://docs.baseten.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Websocket deployment

> Connect over WebSocket to a specific deployment.

Use this endpoint to connect over WebSockets to a specific deployment.

`entity` is `model` or `chain`, depending on whether you call a Baseten model or a Chain.

```sh theme={"system"}
wss://{entity}-{entity_id}.api.baseten.co/deployment/{deployment_id}/websocket
```

See [WebSockets](/development/model/websockets) for more details.

### Parameters

<ParamField path="entity" type="string" required>
  The type of entity you want to connect to. Either `model` or `chain`.
</ParamField>

<ParamField path="entity_id" type="string" required>
  The ID of the model or chain you want to connect to.
</ParamField>

<ParamField path="deployment_id" type="string" required>
  The ID of the deployment you want to connect to.
</ParamField>

<ParamField header="Authorization" type="string" required>
  Your Baseten API key, passed as `Authorization: Bearer $BASETEN_API_KEY`. `Api-Key` is also accepted as the scheme.
</ParamField>

<RequestExample>
  ```sh websocat theme={"system"}
  websocat -H 'Authorization: Bearer EMPTY' \
      wss://{entity}-{model_id}.api.baseten.co/deployment/{deployment_id}/websocket
  ```
</RequestExample>