leaderboard / free x402 doctor scan
x402 Doctor Scan Leaderboard
Agents only pay endpoints they can trust to work. This board is the free, automated 9-check x402 Doctor grade for publicly listed, third-party x402 endpoints — no Stelar Digital-owned endpoint appears on this board. See our own routes, clearly labeled first-party, on the separate Verified registry.
Free automated scans — dated, point-in-time opinions, not endorsements. How we grade →
2 endpoints currently grade below B — names withheld; owners can re-scan any time via x402 Doctor.
25Published (of 30 probed)
25/25Grade A/B
3Dropped (dead/wrong-path, not graded)
doctor-free-v1Check version
2026-08-24 14:48 UTCLast scanned
Payment cannot change or remove a grade. Every row here is the free automated scan, run the same way whether or not the resource owner ever pays for anything — the paid Conformance Report ($79 link, shown only on A/B rows) buys a deeper multi-resource sweep; only a grade-A result on that report earns a listed row, never a better score.
| Endpoint | Grade | Summary | Scanned | Actions |
|---|---|---|---|---|
| scout.hugen.tokyo/scout/x402 | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:46 UTC | Free re-check · Get Conformance Report ($79) |
| minifetch.com/api/v1/x402/extract/url-metadata | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:46 UTC | Free re-check · Get Conformance Report ($79) |
| gotobi.hugen.tokyo/gotobi/holidays | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:46 UTC | Free re-check · Get Conformance Report ($79) |
| weather.hugen.tokyo/weather/forecast | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:46 UTC | Free re-check · Get Conformance Report ($79) |
| x402.ottoai.services/crypto-news | B | /.well-known/x402 is present but does not list this resource. | 2026-08-24 14:46 UTC | Free re-check · Get Conformance Report ($79) |
| verify.agentutil.net/v1/verify | B | /.well-known/x402 is missing, too large, non-200, or not valid JSON. | 2026-08-24 14:46 UTC | Free re-check · Get Conformance Report ($79) |
| pro-api.coingecko.com/api/v3/x402/onchain/search/pools | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:46 UTC | Free re-check · Get Conformance Report ($79) |
| x402.twit.sh/tweets | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:46 UTC | Free re-check · Get Conformance Report ($79) |
| x402.911fund.io/alpha/news | B | /.well-known/x402 is present but does not list this resource. | 2026-08-24 14:48 UTC | Free re-check · Get Conformance Report ($79) |
| pubmed.sekgen.xyz/api/v1/trending-subtopics | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:47 UTC | Free re-check · Get Conformance Report ($79) |
| x402-tools.vercel.app/api/concerts | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:47 UTC | Free re-check · Get Conformance Report ($79) |
| api2ls.com/api/readability | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:47 UTC | Free re-check · Get Conformance Report ($79) |
| x402.creative-tim.com/shadcn-blocks/user-payment | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:47 UTC | Free re-check · Get Conformance Report ($79) |
| obagents.vercel.app/api/obigen/protected/igen | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:47 UTC | Free re-check · Get Conformance Report ($79) |
| hello-world-x402.vercel.app/hello | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:47 UTC | Free re-check · Get Conformance Report ($79) |
| rng.sociologic.ai/random/int | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:47 UTC | Free re-check · Get Conformance Report ($79) |
| api.auor.io/open-holidays/v1/public | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:47 UTC | Free re-check · Get Conformance Report ($79) |
| search.reversesandbox.com/web/search | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:47 UTC | Free re-check · Get Conformance Report ($79) |
| x402.naiko.io/alpha/overnight | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:47 UTC | Free re-check · Get Conformance Report ($79) |
| capable-grace-production-ab1c.up.railway.app/data/narratives | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:47 UTC | Free re-check · Get Conformance Report ($79) |
| tools-agent-x402-production.up.railway.app/generate-meme | B | extensions.bazaar.info.input is missing — required by x402scan and agent tooling to know what to send. Buyers may fail closed rather than guess. | 2026-08-24 14:47 UTC | Free re-check · Get Conformance Report ($79) |
| library.proofivy.com/cryptoslate_list | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:47 UTC | Free re-check · Get Conformance Report ($79) |
| agent.weatherxm.com/api/current | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:47 UTC | Free re-check · Get Conformance Report ($79) |
| www.capminal.ai/api/x402/research | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:48 UTC | Free re-check · Get Conformance Report ($79) |
| www.minifetch.com/api/v1/x402/extract/url-metadata | B | The 402 challenge is only in the Payment-Required response header, not the response body — body-reading clients will fail closed. The x402 spec expects the challenge in both places. | 2026-08-24 14:48 UTC | Free re-check · Get Conformance Report ($79) |
Machine-readable JSON: stelardigital.com/x402-doctor/scan.json
Run your own endpoint free at x402 Doctor, or skip straight to the Conformance Report ($79) for the full multi-resource sweep — grade A on that report earns a Verified-registry listing.
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