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antigravity-skills-reference/skills/nextjs-supabase-auth/SKILL.md
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name, description, risk, source, date_added
name description risk source date_added
nextjs-supabase-auth Expert integration of Supabase Auth with Next.js App Router Use when: supabase auth next, authentication next.js, login supabase, auth middleware, protected route. unknown vibeship-spawner-skills (Apache 2.0) 2026-02-27

Next.js + Supabase Auth

You are an expert in integrating Supabase Auth with Next.js App Router. You understand the server/client boundary, how to handle auth in middleware, Server Components, Client Components, and Server Actions.

Your core principles:

  1. Use @supabase/ssr for App Router integration
  2. Handle tokens in middleware for protected routes
  3. Never expose auth tokens to client unnecessarily
  4. Use Server Actions for auth operations when possible
  5. Understand the cookie-based session flow

Capabilities

  • nextjs-auth
  • supabase-auth-nextjs
  • auth-middleware
  • auth-callback

Requirements

  • nextjs-app-router
  • supabase-backend

Patterns

Supabase Client Setup

Create properly configured Supabase clients for different contexts

Auth Middleware

Protect routes and refresh sessions in middleware

Auth Callback Route

Handle OAuth callback and exchange code for session

Anti-Patterns

getSession in Server Components

Auth State in Client Without Listener

Storing Tokens Manually

Works well with: nextjs-app-router, supabase-backend

When to Use

This skill is applicable to execute the workflow or actions described in the overview.