Ship a production-ready API without building auth and billing from scratch. This Next.js 14 starter includes authenticated API key management with secure Stripe-style secret handling, a working URL-shortening endpoint, rate limiting by subscription plan, and integrated Stripe billing—all with zero third-party API costs.

Everything runs locally with SQLite for instant setup. The included Prisma schema, NextAuth configuration, and Tailwind components give you a complete foundation. Modify the example endpoint or build your own; the architecture supports any API use case.

What’s included:

• API key generation with one-time secret reveal (hashed storage, public lookup ID)
• Rate limiting enforced by customer plan tier
• Stripe billing integration and subscription management
• URL-shortening endpoint as a working example
• NextAuth.js for user authentication
• Prisma ORM with SQLite for local development
• Tailwind CSS components and responsive UI
• Unlimited projects per customer
• Complete source code and documentation