> For the complete documentation index, see [llms.txt](https://developer.crmgrow.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.crmgrow.com/rest.md).

# REST API

{% hint style="info" %}
**Note:** Our JavaScript API is currently in beta. If something isn't working as you'd expect, please drop us a line and let us know! [support@crmgrow.com](mailto:support@crmgrow.com?subject=Developer%20Documentation)
{% endhint %}

## Authentication

All API requests require authentication with [ACCESS TOKEN](/authentication.md). Provide your API Secret as the basic auth `username` value. You do not need to provide a password.

```
curl https://api.crmgrow.com/api/user -H "Authorization:ACCESS_TOKEN"
```

## Request and Response Formats

CRMGrow will provide a JSON-based REST API through which users can create and update contacts. Endpoints accept [form-encoded](https://en.wikipedia.org/wiki/POST_\(HTTP\)#Use_for_submitting_web_forms) request bodies and return [JSON-encoded](http://www.json.org/) responses.

Dates and times in the CRMGrow API are represented as [ISO 8601](https://en.wikipedia.org/wiki/ISO_8601) formatted strings.


---

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