This n8n workflow demonstrates how to securely validate API requests using Auth0 tokens via JWT verification, ensuring only authorized users can access your services. It employs two methods of validation: using JWKS URI (JSON Web Key Set) and a static public certificate, catering to different security setups.
The process begins with two Webhook triggers, each set up to receive API requests. When a request hits the webhook, the workflow proceeds to one of two verification paths. The first path uses the ‘Using JWK-RSA’ node, which retrieves the JWT signing keys dynamically from the Auth0 JWKS endpoint to verify the token’s authenticity. The second path employs the ‘Using Public Cert’ node, where a certificate is manually added for token verification.
Both verification nodes analyze the Authorization header from the incoming request, extract the JWT, and verify its validity against the specified audience and issuer. If validation succeeds, the workflow moves to respond with a 200 OK status, confirming successful authentication. If validation fails, the process leads to a 401 Unauthorized response, blocking unauthorized access.
Throughout the workflow, informative sticky notes guide users on how to configure and adapt the setup for their environment, especially emphasizing the self-hosted scenario where additional dependencies are needed.
This setup is practical for securing APIs, webhooks, or any service that requires stringent access control via JWT tokens issued by Auth0, making it ideal for developers and teams needing robust security in their serverless and API integrations.
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