mcpmeter — One bearer key. Every MCP server. One bill.

The mcpmeter proxy and marketplace simplifies interactions with Model Context Protocol servers by authenticating, routing, and billing calls. It sits between the agent and the publisher's MCP server, forwarding JSON-RPC bodies and counting responses. This setup allows users to access multiple MCPs with a single key and receive one bill. The proxy authenticates bearer keys, meters calls to the microcent, and reconciles transactions nightly, with payouts on the 1st of each month. Users can sign up for a free account without providing card details and receive around 500 free calls to test the service. They mint a SHA-256 hashed key, which is used across the entire catalog, and then integrate the proxy URL and bearer key into their applications, such as Claude Desktop or Cursor. The service charges per call, with a rate of $0.0002 per call for demo MCPs, and publishers set their own prices for premium MCPs. Key features include pay-per-call pricing with no subscription, a single proxy for every paid call, and an open ledger that records every call. The platform takes a fixed percentage, with a 10% fee for the first 100 publishers and a standard rate of 20% thereafter. Users can set per-project monthly caps to prevent unexpected expenses, and the service supports payouts via Stripe Connect to over 45 countries. The proxy is open source, and metadata is available.