A production-ready Next.js starter for building a feature flag service that lets you toggle features remotely and roll out to users gradually without redeploying. The rollout logic is deterministic using a tested hash function—we caught and fixed a real bug where a weaker hash made different flags statistically correlated.

Build a complete SaaS with API key authentication, instant toggling, Stripe billing integration, and SQLite for local development. All the infrastructure you need: Next.js 14, Prisma ORM, NextAuth, and Tailwind CSS.

• Next.js 14 starter with Prisma and SQLite
• Deterministic feature flag rollout logic with tested hashing
• API key authentication and rate limiting
• Instant remote feature toggling without deployment
• Stripe billing integration included
• NextAuth for user authentication
• Tailwind CSS for the UI
• Unlimited projects per license
• No third-party service dependencies
• Full source code and documentation