auth0-fastify

What problem does it solve?

This Skill guides Fastify developers through wiring up Auth0 session-based authentication so they no longer manually build login, logout, and callback routes or session logic.

Core Features & Use Cases

• Automatic Auth0 plugin setup: instructs how to register @auth0/auth0-fastify, add a view engine, and let Auth0 create /auth/login, /auth/logout, and /auth/callback endpoints.
• Session-aware route protection: shows how to guard profile pages with preHandler checks, fetch the authenticated user, and obtain access tokens.
• Environment-driven secrets: emphasizes storing the tenant domain, client ID, client secret, app base URL, and secure session secret in .env for both development and production.
• Use Case: build a server-rendered Fastify web app that requires login, display personalized profile data, and call protected APIs without reimplementing low-level session handling.

Quick Start

Register @auth0/auth0-fastify in your Fastify server, configure environment variables for Auth0 credentials and session secrets, and protect both public and profile routes with the plugin's session helpers.