auth-js

Installation and usage

Production-ready Auth.js v5 setup for Next.js and Cloudflare Workers. Use when: setting up authentication, implementing OAuth/credentials/magic links, configuring D1 or PostgreSQL adapters, debugging session issues, migrating from v4 to v5, fixing edge compatibility, troubleshooting JWT/database sessions, resolving AUTH_SECRET errors, fixing CallbackRouteError, or implementing RBAC. Covers: Next.js App Router & Pages Router, Cloudflare Workers + D1, OAuth providers (GitHub, Google, etc.), credentials auth, magic links, JWT vs database sessions, middleware patterns, role-based access control, token refresh, edge runtime compatibility, and common error prevention. Keywords: Auth.js, NextAuth.js, authentication, OAuth, credentials, magic links, D1 adapter, Cloudflare Workers, Next.js middleware, JWT session, database session, refresh tokens, RBAC, edge compatibility, AUTH_SECRET, CallbackRouteError, CredentialsSignin, JWEDecryptionFailed, session not updating, route protection

skills use auth-js