> 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/websocket-api/connecting.md).

# Connecting

Connecting to the WebSocket API

Connecting to the sFOX WebSocket API gives you access to real-time market and/or account data.

## WebSocket API URLs

Use the following URLs to connect to sFOX WebSocket APIs.

<table><thead><tr><th width="178">Environment</th><th>Endpoint</th></tr></thead><tbody><tr><td><strong>Production</strong></td><td><strong><code>wss://ws.sfox.com/ws</code></strong></td></tr><tr><td><strong>Sandbox</strong></td><td><strong><code>wss://ws.staging.sfox.com/ws</code></strong><br><br><a href="mailto:support@sfox.com"><em>Contact support</em></a> <em>to access the sandbox environment.</em></td></tr></tbody></table>

## **Example Code**

Examples of establishing a WebSocket connection are shown below.

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

```javascript
const WebSocket = require('ws');

const ws = new WebSocket('wss://ws.sfox.com/ws');

// don't forget to subscribe (see below)
ws.on('message', function(data) {
    // Do something with data
    console.log(data);
});
```

{% endtab %}

{% tab title="Python" %}

```python
import asyncio

import websockets

async def main(uri):
    async with websockets.connect(uri) as ws:
        # don't forget to subscribe (see below)
        async for msg in ws:
            print(msg)


asyncio.run(main("wss://ws.sfox.com/ws"))
```

{% endtab %}
{% endtabs %}


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.sfox.com/websocket-api/connecting.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
