auth0-fastify
Auth0 Fastify Integration
Add authentication to Fastify web applications using @auth0/auth0-fastify.
Prerequisites
- Fastify application (v5.x or newer)
- Node.js 20 LTS or newer
- Auth0 account and application configured
- If you don't have Auth0 set up yet, use the
auth0-quickstartskill first
When NOT to Use
- Single Page Applications - Use
auth0-react,auth0-vue, orauth0-angularfor client-side auth - Next.js applications - Use
auth0-nextjsskill which handles both client and server - Mobile applications - Use
auth0-react-nativefor React Native/Expo - Stateless APIs - Use
@auth0/auth0-fastify-apiinstead for JWT validation without sessions
More from auth0/agent-skills
auth0-quickstart
Use when adding authentication or login to any app - detects your stack (React, Next.js, Vue, Nuxt, Angular, Express, Fastify, FastAPI, ASP.NET Core, React Native, Expo, Android, Swift), sets up an Auth0 account if needed, and routes to the correct SDK setup workflow.
1.5Kauth0-nextjs
Use when adding authentication to Next.js applications (login, logout, protected pages, middleware, server components) - supports App Router and Pages Router with @auth0/nextjs-auth0 SDK.
970auth0-react
Use when adding authentication to React applications (login, logout, user sessions, protected routes) - integrates @auth0/auth0-react SDK for SPAs with Vite or Create React App
828auth0-react-native
Use when adding authentication to React Native or Expo mobile apps (iOS/Android) with biometric support - integrates react-native-auth0 SDK with native deep linking
518auth0-express
Use when adding authentication (login, logout, protected routes) to Express.js web applications - integrates express-openid-connect for session-based auth.
416auth0-mfa
Use when adding MFA, 2FA, TOTP, SMS codes, push notifications, passkeys, or when requiring step-up verification for sensitive operations or meeting compliance requirements (HIPAA, PCI-DSS) - covers adaptive and risk-based authentication with Auth0.
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