Stripe + Supabase Auth Starter

A complete authentication and payments starter that wires together Supabase Auth and Stripe Billing — so you can ship your SaaS without building auth and billing from scratch.

Authentication:

• Email/password sign-up and login
• Magic link (passwordless) authentication
• OAuth providers: Google, GitHub, Discord, Twitter
• Email verification and password reset flows
• Session management with JWT refresh
• Row Level Security (RLS) policies pre-configured

Stripe Billing:

• Subscription checkout with pricing table
• One-time payment support
• Customer portal (manage subscription, update card, cancel)
• Webhook handling for all subscription events
• Proration on plan changes
• Free trial support with configurable duration

Access Control:

• Role-based access: free, pro, enterprise
• Feature gating middleware
• Usage-based limits per plan
• API rate limiting by subscription tier
• Admin role with full access override

Database:

• Supabase PostgreSQL with pre-built schema
• User profiles table synced from auth
• Subscription status denormalized for fast queries
• RLS policies for multi-tenant data isolation
• Database migrations included

Developer Experience:

• Type-safe API with tRPC or server actions
• Zod validation on all inputs
• Error handling middleware
• Environment variable validation
• Comprehensive .env.example

Tech Stack:

• Next.js 14 (App Router) + TypeScript
• Supabase Auth + Database
• Stripe Billing + Checkout
• Tailwind CSS + shadcn/ui
• Docker Compose deployment