Summary
This is a comprehensive reference for implementing Auth.js 5 (NextAuth.js) authentication in Next.js 15+ App Router apps. It covers the full setup from installing dependencies and configuring OAuth providers to protecting routes with middleware, securing Server Actions, and implementing role-based access control. You'd reach for this when wiring up GitHub or Google sign-in, protecting dashboard routes, or ensuring your Server Components and Actions actually check authentication before exposing data. The patterns are solid and production-focused, with proper TypeScript types and clear examples of common scenarios like protected dashboards and admin panels. It assumes you're comfortable with App Router conventions but need the Auth.js specifics spelled out.
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npx -y skills add giuseppe-trisciuoglio/developer-kit --skill nextjs-authentication --agent claude-codeInstalls into .claude/skills of the current project.
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Files
SKILL.md
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Featured
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →
