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

# Auth APIs

With the **Auth APIs**, you can authenticate users and applications, refresh tokens, and manage user sessions.

## Available Endpoints

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### Authentication API

Manage access tokens and user sessions:

* [**Request an Access Token**](/en/reference/access-manager/request-access-token) - Authenticate users with password grant or M2M applications with client credentials.
* [**Refresh the Access Token**](/en/reference/access-manager/refresh-token) - Renew expired access tokens using a refresh token.
* [**End User Session**](/en/reference/access-manager/end-user-session) - Revoke active tokens and terminate user sessions.

### Authorization API

Control access permissions:

* [**Validate User Permission**](/en/reference/access-manager/validate-user-permission) - Check if a user has permission to perform a specific action.

### User Information API

Retrieve authenticated user details:

* [**Retrieve User Information**](/en/reference/access-manager/retrieve-user-information)
* Get basic information about the authenticated user.- [**Retrieve User Permissions**](/en/reference/access-manager/retrieve-user-permissions) - List all permissions assigned to the authenticated user.