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Independent MeasurementEndpoint record (L0 · L1)Published state: passLast probed: 2026-10-20 · today

api.agentstools.dev/answer

1.Catalog declaration

Catalog declaration for this endpoint
Resource URLhttps://api.agentstools.dev/answer
Sourcecdp_bazaar
Declared methodGET
Networkeip155:8453
Receiving address0xf22e558a00d91ee12a1f50c52186fecb8ddff493
Declared price (base units)10000
Catalog statusactive
First seen / last seen2026-08-14 08:39 UTC / 2026-10-20 01:01 UTC
Catalog-reported calls / payers (30d)2 / 2

2.Probe history

2026-08-212026-10-20
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
2026-10-20 04:40 UTCGETpass402736 ms—
2026-10-18 13:40 UTCGETpass402883 ms—
2026-10-17 04:40 UTCGETpass402412 ms—
2026-10-15 15:40 UTCGETpass402220 ms—
2026-10-14 12:40 UTCGETpass402306 ms—
2026-10-12 21:40 UTCGETpass402179 ms—
2026-10-11 21:40 UTCGETpass402277 ms—
2026-10-10 21:40 UTCGETpass402388 ms—
2026-10-09 21:40 UTCGETpass402450 ms—
2026-10-08 16:40 UTCGETpass402700 ms—
2026-10-07 13:40 UTCGETpass402340 ms—
2026-10-06 16:40 UTCGETpass402593 ms—
2026-10-05 04:40 UTCGETpass402212 ms—
2026-10-04 13:40 UTCGETpass402177 ms—
2026-10-03 13:40 UTCGETpass402226 ms—
2026-10-02 16:40 UTCGETpass402309 ms—
2026-10-01 22:40 UTCGETpass402259 ms—
2026-10-01 04:40 UTCGETpass402348 ms—
2026-09-30 13:40 UTCGETpass402602 ms—
2026-09-29 13:40 UTCGETpass402172 ms—
2026-09-28 16:40 UTCGETpass402290 ms—
2026-09-28 04:40 UTCGETpass402613 ms—
2026-09-26 10:30 UTCGETpass402137 ms—
2026-09-21 11:24 UTCGETpass402435 ms—
2026-09-17 16:19 UTCGETpass402172 ms—
2026-09-15 11:24 UTCGETpass402203 ms—
2026-09-11 11:24 UTCGETpass402146 ms—
2026-09-07 11:24 UTCGETpass402161 ms—
2026-09-02 11:25 UTCGETpass402137 ms—
2026-08-21 10:55 UTCGETfail402173 msaccepts_invalid402 without a payable accept in the header or the body (which part was missing was not recorded before the 2026-09-29 change).

3.L1 — real purchases

1 of 1 paid attempts settled on-chain, and 1 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.
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).
1/1
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
09-28 00:00settled (nonce-bound)2000xe71a4573…605f6360 ms
10000 units (≈ $0.01 USDC) · L2 no_declarationWhose side: no failure (delivered)

Embed this record

Run this endpoint? Show the settle-through record vet402 measured — the badge reads 1/1 settled · 1 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: 1 of 1 paid attempts settled with an on-chain receipt, and 1 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. (api.agentstools.dev · measured 2026-09-28)

[![vet402 receipt](https://vet402.com/api/badge/endpoint/72bb2336-89d3-41b4-a6a6-a0f46c72ac7a.svg)](https://vet402.com/observatory/e/72bb2336-89d3-41b4-a6a6-a0f46c72ac7a)

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

Catalog listing events, newest first
Detected onEventBeforeAfter
2026-08-18relisted{"status":"delisted"}{"status":"active"}
2026-08-17delisted{"status":"active"}{"status":"delisted"}

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.

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api.agentstools.dev/answer — x402 purchase and probe record | vet402