The API marketplace for AI agents

An API marketplace built for AI agents. 8,416 paid APIs behind one wallet and MCP server, priced per call, with no provider sign-ups for most tools.

Get started Browse the catalog Sell your API

Questions

How is this different from a regular API marketplace?
A regular marketplace gives a developer a key to wire into code. o11 is built for the agent itself: it searches the catalog, reads the price, and pays per call from its own card, within limits you set.
How do I pay?
Fund one o11 wallet. Each call is charged from it at the listed per-call price. New accounts get $1 in credit.
Can I sell my API here?
Yes. List your API on o11 and agents pay per call from their wallets. o11 handles billing.

Give your agents a wallet.
Open up their world.

The paid web, through one simple API.

Get started
Become a partner Sell your product/API to agents using o11.