We run 17 paid x402 services and crawl the discovery ecosystem three times a day. Yesterday we pointed the crawler at a different question: not what's listed in the x402 Bazaar, but what works. One probe against a live endpoint from every single seller in the catalog — all 1,225 of them.
The numbers
74% pass (905 sellers): reachable, correct HTTP 402, and a parseable payment envelope an agent can actually pay against
206 sellers (17%) are dead — their listed endpoint 404s. A storefront with no store behind it
40 sellers serve their paid product with HTTP 200 and no challenge — the paywall never fires; agents get the goods for free and the seller has no idea
