> For the complete documentation index, see [llms.txt](https://docs.sfox.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sfox.com/connect/websocket-api/websocket-feeds-2.md).

# Subscribing & Unsubscribing

Once connected and authenticated to the sFOX WebSocket API you can subscribe to various feeds by using the subscribe or unsubscribe command. 

These commands should be JSON with the following properties:

<table><thead><tr><th width="162.1215494565709">Property</th><th width="118.24758455477465">Type</th><th>Command</th></tr></thead><tbody><tr><td><code>type</code></td><td>string</td><td>Command you are sending to the websocket (<code>subscribe</code> or <code>unsubscribe</code>)</td></tr><tr><td><code>feeds</code></td><td>string[]</td><td>List of the feeds that should be subscribed/unsubscribed to</td></tr></tbody></table>

{% tabs %}
{% tab title="NodeJS" %}

```javascript
const subscribeMsg = {
  type: 'subscribe',
  feeds: ['ticker.sfox.btcusd']
}
ws.send(JSON.stringify(subscribeMsg));

...

const unsubscribeMsg = {
  type: 'unsubscribe',
  feeds: ['ticker.sfox.btcusd']
}
ws.send(JSON.stringify(unsubscribeMsg))
```

{% endtab %}

{% tab title="Python" %}

```python
subscribe_msg = {
    "type": "subscribe",
    "feeds": ["ticker.sfox.btcusd"],
}

await ws.send(json.dumps(subscribe_msg))

...


unsubscribe_msg = {
    "type": "unsubscribe",
    "feeds": ["ticker.sfox.btcusd"],
}

await ws.send(json.dumps(unsubscribe_msg))
```

{% endtab %}
{% endtabs %}


---

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