Google OAuth Setup

This guide walks through setting up Google OAuth authentication for both local development and production.

Prerequisites

• Google Cloud project with OAuth consent screen configured. (Google Cloud Console)

Local Development Setup

1. Configure Environment Variables

Create .env file in the Supabase directory: @supabase/.env

touch supabase/.env

2. Add the local Google Credentials

GOOGLE_CLIENT_ID=
GOOGLE_CLIENT_SECRET=

3. Restart services

pnpm supabase:stop

pnpm supabase:start

pnpm run dev

Production Setup

2. Configure Supabase Dashboard

• Go to your Supabase project dashboard
• Navigate to Authentication → Providers
• Enable Google
• Add the production Client ID and Client Secret
• Set the redirect URL to your production URL, e.g. https://yourdomain.com/api/auth/callback/google
• Save changes.