fourzerotwo
List your API

Your API, as an agent tool

Point us at your domain. We read your manifest and OpenAPI, show you what we'd list, and after review every endpoint is an MCP tool agents can pay for per call, straight to your wallet. Non-exclusive.

We look for https://your-domain/.well-known/fourzerotwo.json. What goes in it.

you keep
90% of every call (draft terms)
paid
per call in USDC over x402, to your own wallet; we never hold it
listed
our MCP server, your own MCP URL, catalog, llms.txt, OpenAPI
review
automatic checks, a person for first versions, then monitoring

Already listed? Sign in. By joining you agree to the provider terms.