# Applications Method | HTTP request | Description ------------- | ------------- | ------------- [**delegate_user_login**](#delegate_user_login) | **POST** /v1/applications/{applicationId}/users/{userId}/delegation | Log user into third-party application ## delegate_user_login > crate::models::ApplicationDelegation delegate_user_login(application_id, user_id) Log user into third-party application Redirect the user to an external application to login them in. Authress uses OpenID and SAML configuration to securely pass the user's login session in your platform to an external platform. The user will then be logged into that platform. ### Parameters Name | Type | Description | Required | Notes ------------- | ------------- | ------------- | ------------- | ------------- **application_id** | **String** | The application to have the user log into. | [required] | **user_id** | **String** | The user. | [required] | ### Return type [**crate::models::ApplicationDelegation**](ApplicationDelegation.md) ---