Published 2026-09-21. Full catalogue scan of 2026-09-20: 14,943 x402 resources across 1,988 hosts.
Weekly measurement of the live x402 payability landscape from the nsgoods observatory. Every figure is from one dated full scan, 20 September, and reflects what endpoints return now, not what a directory lists. Read only, no wallet.
14,943 pay per call resources across 1,988 hosts. 14,159 return a well formed 402 that could settle, 493 cannot be paid with either GET or POST, 264 were unreachable, 16 were malformed. Of the challenges we could price, 10,732 carry a price, median 0.01 USDC. A PAYABLE verdict means the challenge is well formed and, on Solana, the destination account exists. It is not a claim about delivery, quality or honesty. That is a separate, behavioral question.
Base carries 13,973 payable resources, Solana 4,276. Everything after that is a long thin tail: Polygon 1,945, Arbitrum 1,796, and a scatter below.
Between last week's scan and this one, 2,536 resources present a week ago are absent now, and 2,827 new ones appeared. Absent does not mean dead. DNS may still resolve and the endpoint is simply not answering in this scan. But if you pinned a counterparty from last week's list, thousands of those rows have already moved.
A host family, halowerk.com, spans at least eight geo subdomains (nordland, baltikum, suedland, ostland, mitteleuropa, atlantikland, euroland, landvergleich). The one we sampled, nordland, first appeared on 4 September and is 125 country prefixed geodata endpoints, all payable. Each of those subdomains was among the most changed hosts in the catalogue this week. One operator, one template, replicated across subdomains, the same pattern that makes a raw endpoint count misleading. agent402.tools, the single host we flagged before, is now 621 endpoints, up from 583.
Still zero. We began measuring before anyone adopted it. Weeks on, no host in the scanned catalogue emits it.
An endpoint count is inflated by a few large operators and reshuffled every week by silent turnover. If you are deciding whether an agent can pay a counterparty, a directory listing will not tell you. Only a live check will.