Skip to main content
Independent MeasurementEndpoint record (L0 · L1)Published state: passLast probed: 2026-09-29 · 1 day ago

hello-world-x402.vercel.app/test1

1.Catalog declaration

Catalog declaration for this endpoint
Resource URLhttps://hello-world-x402.vercel.app/test1
Sourcecdp_bazaar
Declared methodGET
Networkeip155:8453
Receiving address0x2a47e248ee3b5f3e680b5f6b5832e5ef1206b7e3
Declared price (base units)1000
Catalog statusactive
First seen / last seen2026-08-14 08:52 UTC / 2026-09-30 01:03 UTC
Catalog-reported calls / payers (30d)1 / 1

2.Probe history

2026-09-102026-09-29
Figure 1. Probe timeline, last 30 probes for this endpoint (UTC). Filled = pass, crossed = fail, dashed = unverified. Same-day probes overlap. Marks closer than one mark width are stepped down one lane.
L0 probe history, newest first
Probed atMethodVerdictHTTPLatencyReason
2026-09-29 22:40 UTCGETpass40280 ms—
2026-09-29 04:40 UTCGETpass402129 ms—
2026-09-28 13:40 UTCGETpass40253 ms—
2026-09-27 22:40 UTCGETpass402392 ms—
2026-09-27 04:40 UTCGETpass402141 ms—
2026-09-26 13:40 UTCGETpass402215 ms—
2026-09-25 16:40 UTCGETpass402272 ms—
2026-09-24 22:40 UTCGETpass402250 ms—
2026-09-24 04:40 UTCGETpass402248 ms—
2026-09-23 13:40 UTCGETpass40279 ms—
2026-09-22 16:40 UTCGETpass402160 ms—
2026-09-21 22:40 UTCGETpass402628 ms—
2026-09-21 04:40 UTCGETpass402197 ms—
2026-09-20 13:40 UTCGETpass40269 ms—
2026-09-19 16:40 UTCGETpass40279 ms—
2026-09-19 04:40 UTCGETpass402292 ms—
2026-09-18 13:40 UTCGETpass402187 ms—
2026-09-17 16:40 UTCGETpass40240 ms—
2026-09-16 22:40 UTCGETpass402106 ms—
2026-09-16 13:40 UTCGETpass402201 ms—
2026-09-15 13:40 UTCGETpass40261 ms—
2026-09-14 22:40 UTCGETpass4022102 ms—
2026-09-14 04:40 UTCGETpass402103 ms—
2026-09-13 16:40 UTCGETpass402133 ms—
2026-09-12 22:40 UTCGETpass40260 ms—
2026-09-12 13:40 UTCGETpass402495 ms—
2026-09-11 16:40 UTCGETpass402226 ms—
2026-09-11 04:40 UTCGETpass402113 ms—
2026-09-10 17:40 UTCGETpass402168 ms—
2026-09-10 05:40 UTCGETpass402362 ms—

3.L1 — real purchases

3 of 3 paid attempts settled on-chain, and 3 of those also returned a 2xx response (delivered). Each settled row carries its on-chain transaction hash, and that transaction is the evidence. On this page a receipt means the seller's own settlement receipt (PAYMENT-RESPONSE); a settled row can have none (see “tx from our index”). A settled row reads as nonce-bound when the on-chain re-read also matched the one-time signature nonce we generated for that purchase, and amount + payee when it matched amount, payee, asset and chain with no nonce on record — the binding shipped on 2026-09-04, so earlier rows carry the weaker evidence and keep their label rather than being demoted (methodology). settled is the transfer we confirmed on-chain; delivered is the response arriving. A settled row whose paid request answered 5xx counts as settled and not as delivered — definitions.

Terms in this table

settled (nonce-bound)
vet402 confirmed the USDC transfer on-chain, and the on-chain re-read also matched the one-time nonce vet402 signed for that purchase.
settled (amount + payee)
vet402 confirmed the USDC transfer on-chain; the on-chain re-read matched amount, payee, asset and chain; no nonce was on record (rows before 2026-09-04).
L2 no_declaration
the listing declares no output schema to check the response against.
Whose side
the same words as the seller page: seller's side only after failures on two different days (UTC), marked “under re-check”; vet402's side; or not sorted (the rules).
3/3
Figure 2. Settle-through: one cell per paid attempt. Filled = settled on-chain, crossed = signed, and not settled on-chain.
L1 purchase history, newest first
Attempted atResultHTTPOn-chain txLatency
09-17 18:01settled (nonce-bound)2000xf312e756…e98a1362 ms
1000 units (≈ $0.001 USDC) · L2 no_declarationWhose side: no failure (delivered)
09-10 01:01settled (nonce-bound)2000xdf0167dd…03671047 ms
1000 units (≈ $0.001 USDC) · L2 no_declarationWhose side: no failure (delivered)
09-02 19:00settled (amount + payee)2000xf9e91369…d2a41157 ms
1000 units (≈ $0.001 USDC) · L2 no_declarationWhose side: no failure (delivered)

Embed this record

Run this endpoint? Show the settle-through record vet402 measured — the badge reads 3/3 settled · 3 delivered and updates as the record grows. It carries the host it is about and the date it was last measured, so a saved copy cannot pass itself off as current. It states a measurement, not a rating.

vet402: 3 of 3 paid attempts settled with an on-chain receipt, and 3 of those also returned a 2xx response. settled is the confirmed transfer; delivered is the response arriving. A measurement of what happened when vet402 paid this endpoint, not a recommendation. (hello-world-x402.vercel.app · measured 2026-09-17)

[![vet402 receipt](https://vet402.com/api/badge/endpoint/ab326c68-1bba-42b9-9847-d53cbde74091.svg)](https://vet402.com/observatory/e/ab326c68-1bba-42b9-9847-d53cbde74091)

Get one email when this record's verdict changes. No digest, no marketing — one message per change, and only for this endpoint. We first send one confirmation email; nothing else goes out until you confirm.

4.Catalog listing events

No listing changes observed.

unverified is not a failure; a fail is published only after two consecutive failing probes. Definitions: methodology.

5.Dispute this record

Think a measurement above is wrong? Say which probe or purchase and what you observed instead. One person reads it and replies. The record is never deleted on dispute: if it was wrong, the correction is published with the same weight; if it was right, it stands. Operators who control the receiving address can also sign a dispute via POST /api/v1/observatory/disputes (API reference), which re-measures through the normal publication gate.

20–2,000 characters · 0 so far

hello-world-x402.vercel.app/test1 — x402 purchase and probe record | vet402