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Independent MeasurementEndpoint record (L0 · L1)Published state: passLast probed: 2026-09-28 · 1 day ago

rpc.nodeflare.app/base/x402

1.Catalog declaration

Catalog declaration for this endpoint
Resource URLhttps://rpc.nodeflare.app/base/x402
Sourcecdp_bazaar
Declared methodPOST
Networkeip155:8453
Receiving address0x9d86e0e74333b297b1d0b6ba30d2ed1b5f01f296
Declared price (base units)1000
Catalog statusactive
First seen / last seen2026-08-14 08:39 UTC / 2026-09-29 01:02 UTC
Catalog-reported calls / payers (30d)45 / 9

2.Probe history

2026-09-092026-09-28
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
2026-09-28 22:40 UTCPOSTpass402387 ms—
2026-09-28 04:40 UTCPOSTpass402217 ms—
2026-09-27 16:40 UTCPOSTpass402649 ms—
2026-09-26 22:40 UTCPOSTpass402150 ms—
2026-09-26 04:40 UTCPOSTpass4022161 ms—
2026-09-25 13:40 UTCPOSTpass402507 ms—
2026-09-24 16:40 UTCPOSTpass402585 ms—
2026-09-23 22:40 UTCPOSTpass402140 ms—
2026-09-23 04:40 UTCPOSTpass402382 ms—
2026-09-22 13:40 UTCPOSTpass402289 ms—
2026-09-21 16:40 UTCPOSTpass402285 ms—
2026-09-20 22:40 UTCPOSTpass4021962 ms—
2026-09-20 04:40 UTCPOSTpass402641 ms—
2026-09-19 13:40 UTCPOSTpass402118 ms—
2026-09-18 22:40 UTCPOSTpass402592 ms—
2026-09-18 04:40 UTCPOSTpass4022161 ms—
2026-09-17 13:40 UTCPOSTpass402129 ms—
2026-09-16 16:40 UTCPOSTpass402251 ms—
2026-09-15 22:40 UTCPOSTpass4022128 ms—
2026-09-15 04:40 UTCPOSTpass402239 ms—
2026-09-14 16:40 UTCPOSTpass402300 ms—
2026-09-13 22:40 UTCPOSTpass402367 ms—
2026-09-13 13:40 UTCPOSTpass402144 ms—
2026-09-12 16:40 UTCPOSTpass40247 ms—
2026-09-12 04:40 UTCPOSTpass402565 ms—
2026-09-11 16:40 UTCPOSTpass402180 ms—
2026-09-10 23:40 UTCPOSTpass402439 ms—
2026-09-10 14:40 UTCPOSTpass402294 ms—
2026-09-09 23:40 UTCPOSTpass402365 ms—
2026-09-09 05:40 UTCPOSTpass402369 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
09-16 18:01settled (nonce-bound)2000x05104416…fb0e1358 ms
1000 units (≈ $0.001 USDC) · L2 no_declarationWhose side: no failure (delivered)
09-10 01:02settled (nonce-bound)2000xd873b435…8a732466 ms
1000 units (≈ $0.001 USDC) · L2 no_declarationWhose side: no failure (delivered)
09-02 12:08settled (amount + payee)2000xb392e31f…14521736 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. (rpc.nodeflare.app · measured 2026-09-16)

[![vet402 receipt](https://vet402.com/api/badge/endpoint/79aec767-fda7-4d77-91b0-1b98f2f8dda4.svg)](https://vet402.com/observatory/e/79aec767-fda7-4d77-91b0-1b98f2f8dda4)

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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