This n8n workflow automates the user authentication process using Auth0, enabling secure login via OAuth2 and retrieving user info seamlessly. It integrates webhooks, HTTP requests, and conditional logic to manage authentication flows effectively.
**Workflow Breakdown:**
1. **Webhook for Login:** Triggered when a user visits the login URL, prompting them to authenticate via Auth0.
2. **Set Application Details:** Variables like domain, client ID, secret, and server URL are configured for the OAuth process.
3. **Authentication Webpage Redirection:** Users are redirected to Auth0’s login page, allowing login via email, Google, GitHub, or Facebook.
4. **Callback Handling:** Auth0 redirects back with a code, captured by the ‘receive-token’ webhook.
5. **OAuth Token Exchange:** The code is exchanged for an access token via an HTTP POST request.
6. **Retrieve User Info:** The access token is used to query Auth0’s userinfo endpoint, fetching the user’s profile data.
7. **Conditional Checks:** Ensures the presence of the authorization code for proceeding or stopping with an error.
This workflow is ideal for automating secure login and user data retrieval in scenarios like personalized content delivery, user management, or integrating OAuth with WordPress sites.
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