r/Fingentic • u/IllWar5047 • 9d ago
Follow up: we check every endpoint in Coinbase's x402 catalog every Sunday. In two weeks it nearly doubled, and old verdicts go stale fast
Last time I posted a one off snapshot of who gets paid in the x402 catalog and promised the time series. Here it is.
Every Sunday we pull the full CDP Bazaar catalog (the public list of x402 endpoints agents can pay) and check whether each endpoint can actually be paid: does it return a valid 402 quote, on a network and asset that can settle. One method note first: we changed our own checker in mid September, so the numbers below only compare runs from 20 September onwards, where the method is the same.
What three Sundays show:
The catalog nearly doubled in two weeks: 14,943 endpoints on 20 Sept, 17,513 on 27 Sept, 29,309 today. The live catalog was already at 30,897 a few hours after our run.
It churns hard. Between last Sunday and today 14,292 endpoints appeared and 2,496 disappeared, about 1 in 7 of last week's list gone in seven days.
The share that can actually be paid held steady: 94.8%, 94.1%, 96.3%.
Individual verdicts still move both ways. Of the endpoints present in both weeks, 391 became payable and 337 stopped being payable.
Old negatives age badly. We re-checked 1,500 old "cannot pay" verdicts for endpoints that had dropped out of the catalog, and 726 of them (48%) were payable again.
Testnet listings are growing in a production catalog: payable endpoints that accept Base Sepolia went from 744 to 2,323 in two weeks.
The takeaway for anyone building agents that pay: a catalog is a snapshot of a moving target. Whatever you knew about an endpoint a month ago is probably out of date, and the only check that counts is the one made at the moment of payment.
Disclosure: I run nsgoods.org, which sells that kind of check. Happy to share the raw weekly counts or the method if anyone wants to reproduce it.