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

# Overview

Tracy supports two authentication methods tailored for different use cases: [**JWTs**](/en/rest-api/authentication/jwts) for client-side applications (User-to-Server) and [**API keys**](/en/rest-api/authentication/api-keys) for server-side integrations (Machine-to-Machine).