Next.js Authentication

Overview

Provides authentication implementation patterns for Next.js 15+ App Router using Auth.js 5 (NextAuth.js), covering the complete authentication lifecycle from initial setup to production-ready role-based access control implementations.

When to Use

• Setting up Auth.js 5 from scratch or adding OAuth providers
• Implementing protected routes with Middleware
• Handling authentication in Server Components and Server Actions
• Implementing role-based access control (RBAC)
• Creating credential-based or OAuth sign-in/sign-out flows

Instructions

1. Install Dependencies

Install Auth.js v5 (beta) for Next.js App Router: