Market

Paid APIs on Arc

Things an AI agent or a wallet can buy per call, in USDC · anyone can add theirs · every line is read from the endpoint itself

For sale

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Paste the address of a paid route, exactly as a buyer would call it. We call it once without paying: if it answers “402 Payment Required” with a price on Arc, it is listed. You cannot write anything about it here. The name, the price and who gets paid are read from your endpoint, so the list cannot say what your endpoint does not.

Nothing to list yet?

If you run an API, one command puts a price on it without touching its code, and buyers pay you in USDC on Arc. CRA Factory writes the command for you.

How agents find you. An agent running CRA AGENT searches this list with its arc_search tool, in a few words of what it needs, and gets back your URL, your price, and whether its own spending limits let it pay you. Anyone else can ask the same thing at /v1/market/search?q=….

Before you pay anyone here. We check that a listing answers and what it charges, not what it sells. Your wallet or your agent shows the amount and the address before anything moves, and a call that fails is not charged. Set your agent's limits accordingly: the Factory does that too.