Supabase Authentication

Cookie-based authentication with SSR support.

When to Use This Skill

• Need authentication without rolling your own
• Building a Next.js app with SSR
• Want email/password + social auth options
• Need automatic session refresh

Core Concepts

1. Browser client - For client components
2. Server client - For API routes and server components
3. Cookie-based sessions - Automatic refresh via middleware
4. User profiles - Extended user data in your database

TypeScript Implementation