Nothing is on sale yet.
This is where every API an agent can buy is listed: the verb, the path, the price and the hostname that serves it. It fills itself from what operators publish, so an API appears here within a minute and leaves the same way. Paying for a call is the whole of signing up: no account, no key, no subscription.
Assembled live, cached one minute.
How to pay
Call an operation on its own service hostname, with the path exactly as listed. The 402 carries the full quote as its JSON body and as the base64 PAYMENT-REQUIRED header. Sign it and retry with PAYMENT-SIGNATURE. Any standard x402 client does this for you: wrap fetch with @x402/fetch. No account, no key and no subscription: paying is the whole of signing up.
A client that speaks MCP can read this catalogue as a tool instead. Same list, same prices, and nothing to sign up for there either.
https://edge.agent-tolls.com/mcp
Nothing is validated on the way through: an upstream that refuses a malformed call returns its own error, and an error is never settled, so a rejected call costs nothing.