# Authentication Documentation

## Overview
This document provides a comprehensive guide to authentication in our API. It is crucial for users to understand the authentication process to ensure secure communication with our services.

## Key Concepts
- **Authentication Token**: A unique identifier used to verify identity.
- **Request Expiration**: Tokens have a limited lifespan and must be renewed periodically.
- **Request Signing**: Ensures that requests come from authenticated users.

## Request Expiration
For details on the expiration of requests, please refer to the [Request Expiration documentation](https://developer.prodege.com/demand/authentication/request-expiration).

## Request Signing
To learn more about how to sign your requests, visit the [Request Signing documentation](https://developer.prodege.com/demand/authentication/request-signing).

## Link Signing
Information on link signing can be found in the [Link Signing documentation](https://developer.prodege.com/demand/authentication/link-signing).