Weekly measurement from our observatory. One dated scan, live endpoint behavior, not directory listings.
14,652 pay per call resources, 1,971 hosts, 47 declared networks. 89.7% return a well formed 402 that could settle, 9.7% cannot be paid with either GET or POST.
The 47 networks look like a broad multi chain ecosystem. They are mostly one host. agent402.tools declares 583 endpoints, about 4% of everything we track, replicated across 12 chains. Counting distinct endpoints per network, that one host is 99.3% of Celo, 97.7% of Sei, 96.4% of Avalanche, 94.5% of Stellar, 91.7% of Optimism, 85.5% of Algorand, 48.6% of Arbitrum, 43.5% of Polygon. Base, the real center of gravity, is only 4.5% agent402. On eight networks it is 74 to 99% of the payable endpoints. Remove one host and those collapse to a handful of genuine ones.
Separately, in a tracked slice we monitor, one host that was about 37% of it and payable a week ago is now unreachable on every path we scan, DNS still resolving. The service is simply down, and no directory flagged it.
And x401 adoption across the same population is still zero.
The point: counts of declared endpoints are inflated by one host and destabilized by silent disappearances. A directory listing will not tell you whether an agent can pay a counterparty. Only a live check will.
Full report: https://x402.nsgoods.org/proof/payability-report-2026-09-13.html
Source: r/x402 · by /u/IllWar5047