> For the complete documentation index, see [llms.txt](https://relationlabs.gitbook.io/relation-one-api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://relationlabs.gitbook.io/relation-one-api/guide/js-sdk.md).

# JS-SDK

## Relation-Auth JS-SDK

Help you easily obtain `addressAuthToken` containing user identity information .

{% content-ref url="/pages/dbjBPIQMcowhi26tnXZv" %}
[Quick Start](/relation-one-api/js-sdk/relation-auth/quick-start.md)
{% endcontent-ref %}

## IM JS-SDK

With just a few simple API calls, you can build an Instant Messaging Application .

{% content-ref url="/pages/QI5ZsKHMpxMEBEjgUixH" %}
[Quick Start](/relation-one-api/js-sdk/im-js-sdk/quick-start.md)
{% endcontent-ref %}