Setup & Installation
npx skills add https://github.com/auth0/agent-skills --skill auth0-fastify-api
https://github.com/auth0/agent-skills/tree/main/plugins/auth0-sdks/skills/auth0-fastify-api
View on GitHubWhat This Skill Does
Secures Fastify API endpoints with JWT Bearer token validation through Auth0. It registers as a Fastify plugin and provides route-level middleware for verifying access tokens and checking scopes or permissions on REST APIs.
It handles JWKS fetching, token verification, and scope checks out of the box, so you don't have to manually decode JWTs or manage signing key rotation yourself.
When to use it
- Adding JWT validation to a Fastify REST API that serves a React frontend
- Restricting API routes by scope so only certain clients can write data
- Building a microservice that accepts access tokens from a mobile app
- Protecting admin-only endpoints with permission checks on a Fastify server
- Validating Auth0 access tokens on a Fastify v5 backend without writing custom middleware