You built an MCP server. It works. AI agents call it. But you're paying for compute and API calls out of pocket.
Adding billing to an MCP server usually means: Stripe integration, API key management, usage tracking, free tier logic, subscription management, webhook handling. That's 2–4 weeks of work that has nothing to do with the tool you actually built. Most operators give up and leave money on the table.
MCP Billing Gateway solves this. It's a reverse proxy that sits in front of your MCP server and handles all billing — Stripe subscriptions, per-call credits, and x402 crypto payments. Your server stays unchanged.
Architecture
AI Agent (caller)
