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Independent MeasurementEndpoint record (L0 · L1)Published state: passLast probed: 2026-09-30 · today

agentres.dev/api/book

1.Catalog declaration

Catalog declaration for this endpoint
Resource URLhttps://agentres.dev/api/book
Sourcecdp_bazaar
Declared methodPOST
Networkeip155:8453
Receiving address0x66717045858d9f598e2ebd046bf42a0b1063c0fa
Declared price (base units)10000
Catalog statusactive
First seen / last seen2026-08-14 08:39 UTC / 2026-09-30 01:03 UTC
Catalog-reported calls / payers (30d)8 / 5

2.Probe history

2026-09-102026-09-30
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
2026-09-30 04:40 UTCPOSTpass402988 ms—
2026-09-29 13:40 UTCPOSTpass402220 ms—
2026-09-28 16:40 UTCPOSTpass4022214 ms—
2026-09-27 22:40 UTCPOSTpass402580 ms—
2026-09-27 04:40 UTCPOSTpass402392 ms—
2026-09-26 13:40 UTCPOSTpass402425 ms—
2026-09-25 16:40 UTCPOSTpass402203 ms—
2026-09-24 22:40 UTCPOSTpass402209 ms—
2026-09-24 04:40 UTCPOSTpass402328 ms—
2026-09-23 13:40 UTCPOSTpass40290 ms—
2026-09-22 16:40 UTCPOSTpass402205 ms—
2026-09-22 04:40 UTCPOSTpass402254 ms—
2026-09-21 13:40 UTCPOSTpass402292 ms—
2026-09-20 16:40 UTCPOSTpass402256 ms—
2026-09-19 22:40 UTCPOSTpass4021389 ms—
2026-09-19 04:40 UTCPOSTpass402181 ms—
2026-09-18 13:40 UTCPOSTpass402255 ms—
2026-09-17 16:40 UTCPOSTpass402327 ms—
2026-09-17 04:40 UTCPOSTpass402108 ms—
2026-09-16 13:40 UTCPOSTpass402357 ms—
2026-09-15 16:40 UTCPOSTpass402224 ms—
2026-09-14 22:40 UTCPOSTpass402263 ms—
2026-09-14 04:40 UTCPOSTpass4021063 ms—
2026-09-13 16:40 UTCPOSTpass40296 ms—
2026-09-13 04:40 UTCPOSTpass402140 ms—
2026-09-12 13:40 UTCPOSTpass402420 ms—
2026-09-11 22:40 UTCPOSTpass402136 ms—
2026-09-11 04:40 UTCPOSTpass4021913 ms—
2026-09-10 17:40 UTCPOSTpass402322 ms—
2026-09-10 05:40 UTCPOSTpass402254 ms—

3.L1 — real purchases

3 of 3 paid attempts settled on-chain, and 0 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.

3 of those paid attempts are held as inconclusive rather than counted against this seller (3 settled and answered 4xx, 0 answered 4xx with no settlement receipt, 0 answered 402 or 5xx while our own payer wallet was out of USDC, 2026-09-13 00:00 to 2026-09-15 23:49 UTC). A 4xx says the request was not one the server would accept, and we cannot rule out that the request was ours to get wrong: vet402 buys with no API key of the seller's, and sends a POST body only when the seller declares one. This is the same principle the methodology already applied to path_template URLs, applied to the body and the authentication header as well. The rows are not deleted and not hidden — they are below, with their status and HTTP code, and they are out of the denominator for delivered (corrections).

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_4xx
held_reason in the export: the payment settled, then the paid request got a 4xx.
L2 not_checked
not checked: the paid request did not answer 200, so there was no response to check against the listing's output schema.
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 00:01settled (nonce-bound)4000xa58c5bc1…3a9b4834 ms
10000 units (≈ $0.01 USDC) · L2 not_checkedWhose side: not sorted (held)
09-10 19:00settled (nonce-bound)4000xa854306c…2f4d4644 ms
10000 units (≈ $0.01 USDC) · L2 not_checkedWhose side: not sorted: charged, then rejected an input vet402 had not sent
09-04 12:07settled (nonce-bound)4000x6c1a7bf2…2e544495 ms
10000 units (≈ $0.01 USDC) · L2 not_checkedWhose side: not sorted: charged, then rejected an input vet402 had not sent

Embed this record

Run this endpoint? Show the settle-through record vet402 measured — the badge reads 3/3 settled · 0 delivered · 3 inconclusive 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 0 of those also returned a 2xx response. settled is the confirmed transfer; delivered is the response arriving. 3 paid attempts are held as inconclusive rather than counted against the seller: a paid request that answered 4xx, settled or not, can be our own request being malformed, because vet402 buys with no API key and sends a request body only when the seller declares one; and a 402 or 5xx from 2026-09-13 to 2026-09-15 came while vet402's own payer wallet was out of USDC. A measurement of what happened when vet402 paid this endpoint, not a recommendation. (agentres.dev · measured 2026-09-17)

[![vet402 receipt](https://vet402.com/api/badge/endpoint/9d61b804-82db-43e7-ad23-e5995ea46bd1.svg)](https://vet402.com/observatory/e/9d61b804-82db-43e7-ad23-e5995ea46bd1)

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.

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agentres.dev/api/book — x402 purchase and probe record | vet402