> For the complete documentation index, see [llms.txt](https://docs.compliance.phalcon.blocksec.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.compliance.phalcon.blocksec.com/api-documentation/introduction/authentication.md).

# Authentication

The REST API for the Phalcon Compliance APP uses API keys for secure authentication. Please keep your API keys secure to protect your data.

### Obtaining an API Key

In your project workspace, navigate to ***System -> API*** and click ***Generate Key*** to create a key. Each project supports up to 3 active keys, and all API calls will be counted towards your project's usage quota.

### Using the API Key

Authenticate API requests by including your API key in the HTTP request header:

**Request Header Format**

* Key: api-key
* Value: your API key