# Websocket

The `/websocket` endpoint is used to provide real-time interaction with modules running on Engine. It provides an interface to build efficient, responsive user interfaces, monitoring systems and other extensions which require live, two-way or asynchronous interaction.

If you are building browser-based experiences we have a pre-built AngularJS client library ready to go:

{% content-ref url="../../developer-guide/user-interfaces/composer" %}
[composer](https://engine.place.technology/developer-guide/user-interfaces/composer)
{% endcontent-ref %}

Otherwise, if you are working with other frameworks, or would like to build your own, read on.

## Opening the Connection

A connection to the real-time API can be established by requesting the `/control/websocket` endpoint with valid access token. The method for this will vary depending on the tooling used for your app, but as a simple example in JavaScript this can be achieved by creating a new WebSocket object:

```javascript
let socket = new WebSocket('wss://example.com/control/websocket?bearer_token=<access token>');
```

When opened, this will provide a full-duplex stream for communications.