Protect Fastify API endpoints with Auth0 JWT validation.
npx skills add https://github.com/auth0/docs-v2 --skill auth0-fastify-api
Please help me install this Agent Skill. Skill: auth0-fastify-api Source: https://github.com/auth0/docs-v2/tree/main/main/.mintlify/skills/auth0-fastify-api Command: npx skills add https://github.com/auth0/docs-v2 --skill auth0-fastify-api
This Skill stops unauthorized access to Fastify API routes by validating JWT bearer tokens and ensuring only properly scoped requests reach the business logic.
Register the @auth0/auth0-fastify-api plugin with your Fastify server, set AUTH0_DOMAIN and AUTH0_AUDIENCE from your Auth0 API, and protect routes using fastify.requireAuth().
High-intent search queries and answers about installing and using this skill.
Protect Fastify API routes by registering the Auth0 plugin to validate JWT bearer tokens, attach user claims, and block invalid requests before route handlers run. Use fastify.requireAuth preHandlers to enforce stateless authentication on endpoints.
Enforce scope and permission checks on Node.js Fastify endpoints by calling fastify.requireAuth with specific scopes or permission lists. This validates access tokens against your Auth0 API audience to ensure only properly scoped requests reach business logic.
Yes, securing a Fastify backend requires an Auth0 API resource and matching audience configuration. You must set AUTH0_DOMAIN and AUTH0_AUDIENCE so the JWT validation middleware can verify access tokens from SPA and mobile clients.
Yes, you can use this JWT validation middleware for stateless auth in Fastify REST APIs. It decodes bearer tokens, attaches user claims, and applies fastify.requireAuth preHandlers to protect routes without server-side sessions.
The best way to secure a Fastify backend serving SPA and mobile clients is requiring access tokens with the correct Auth0 audience. Register the Auth0 Fastify plugin to validate JWTs and block unauthorized users from hitting protected routes.
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