> ## Documentation Index
> Fetch the complete documentation index at: https://docs.unicyfalcon.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Authentication (API Reference)

> HMAC-SHA256 authentication for API requests

API requests require HMAC-SHA256 authentication. See the main [Authentication](/authentication) guide for setup and examples.

## Headers

* **X-API-Key**: Your API key
* **X-Timestamp**: Unix timestamp (must be within 5 minutes of server time)
* **X-Signature**: Base64 HMAC-SHA256 of `METHOD|URI|BODY|TIMESTAMP`

## Base URL

```
https://{subdomain}.unicyfalcon.com/api/v1
```

Replace `{subdomain}` with your organization subdomain.