Auth Patterns

This walks you through the most common Next.js authentication patterns, with a heavy focus on NextAuth.js v5 (Auth.js). You get working examples for middleware protection, server and client session handling, role-based access control, and the difference between JWT and database sessions. It covers the practical stuff like protecting routes, building sign-in buttons as server actions, and extending session types for custom user data. The code snippets are complete enough to actually use. If you're setting up auth in a Next.js app and want to see the modern patterns side by side, this is a solid reference that'll save you from hunting through docs.

skills.sh installs: 182
GitHub stars: 3.7K
last updated: Aug 21, 2026

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$ npx -y skills add davepoon/buildwithclaude --skill auth-patterns --agent claude-code

Installs into .claude/skills of the current project.

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Authentication Patterns in Next.js

Overview

Next.js supports multiple authentication strategies. This skill covers common patterns including NextAuth.js (Auth.js), middleware-based protection, and session management.

Authentication Libraries

Library	Best For
NextAuth.js (Auth.js)	Full-featured auth with providers
Clerk	Managed auth service
Lucia	Lightweight, flexible auth
Supabase Auth	Supabase ecosystem
Custom JWT	Full control

NextAuth.js v5 Setup

Installation

npm install next-auth@beta

Configuration

// auth.ts
import NextAuth from 'next-auth'
import GitHub from 'next-auth/providers/github'
import Credentials from 'next-auth/providers/credentials'

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Details

Repository: github.com/davepoon/buildwithclaude
Categories: Frontend Development, Backend & APIs, Security
First seen: Jun 3, 2026

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