Self-hosted Next.js/TypeScript boilerplate: full OAuth 2.1 + PKCE, API key management with zero-downtime rotation, usage-based Stripe billing, and Redis rate limiting. 7 modules, 300+ tests. One-time β¬79, no revenue share, no platform lock-in. The metering core is free and open source on npm.
Comparing MCP-Billing for OAuth 2.1 and usageβbased Stripe? Check out ShipFast to launch faster, Clerk for battleβtested auth and users, Polar for developer monetization, ApyHub to unify APIs, and staarter.dev for a head-start SaaS boilerplate.