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Independent MeasurementEndpoint record (L0 · L1)Published state: passLast probed: 2026-10-04 · 1 day ago

twitter.use.x402atlas.com/search

1.Catalog declaration

Catalog declaration for this endpoint
Resource URLhttps://twitter.use.x402atlas.com/search
Sourcecdp_bazaar
Declared methodGET
Networkeip155:8453
Receiving address0x51d577c8cbb8b3fb1ba0ce31c7923cc27a07f78b
Declared price (base units)6900
Catalog statusactive
First seen / last seen2026-08-14 08:39 UTC / 2026-10-03 01:04 UTC
Catalog-reported calls / payers (30d)463 / 21

2.Probe history

2026-08-142026-10-04
Figure 1. Probe timeline, last 28 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
2026-10-04 13:40 UTCGETpass40282 ms—
2026-10-03 13:40 UTCGETpass402160 ms—
2026-10-02 16:40 UTCGETpass402105 ms—
2026-10-01 22:40 UTCGETfail402133 msprice_mismatchDeclared 6000 of 0x8335…2913; the 402 offered 6900 of 0x8335…2913, 6900 of 0x3c49…3359, 6900 of 0xaf88…5831, 6900 of EPjFWd…Dt1v.
2026-10-01 04:40 UTCGETpass402113 ms—
2026-09-30 13:40 UTCGETpass402948 ms—
2026-09-29 16:40 UTCGETpass402202 ms—
2026-09-28 22:40 UTCGETpass40281 ms—
2026-09-28 04:40 UTCGETpass402136 ms—
2026-09-27 13:40 UTCGETpass402164 ms—
2026-09-26 16:40 UTCGETpass402183 ms—
2026-09-25 22:40 UTCGETpass402137 ms—
2026-09-25 04:40 UTCGETpass4022094 ms—
2026-09-24 13:40 UTCGETpass40218 ms—
2026-09-23 16:40 UTCGETpass402197 ms—
2026-09-22 22:40 UTCGETpass40288 ms—
2026-09-22 04:40 UTCGETpass402343 ms—
2026-09-21 13:40 UTCGETpass402808 ms—
2026-09-20 16:40 UTCGETpass402165 ms—
2026-09-20 04:40 UTCGETpass402215 ms—
2026-09-19 13:40 UTCGETpass4022114 ms—
2026-09-18 16:40 UTCGETpass40213 ms—
2026-09-17 22:40 UTCGETpass40220 ms—
2026-09-17 12:35 UTCGETpass402136 ms—
2026-09-13 11:24 UTCGETpass40252 ms—
2026-09-10 11:24 UTCGETpass40239 ms—
2026-09-06 11:24 UTCGETpass40216 ms—
2026-08-14 08:53 UTCGETpass4026 ms—

3.L1 — real purchases

0 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 (0 settled and answered 4xx, 3 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).

3 of the paid attempts failed on vet402's side (for example our wallet was out of USDC, or we did not send the input the listing declares). The rows stay in the table.

Terms in this table

settle_failed
vet402 signed a payment and got no settlement receipt back.
unsettled_4xx
held_reason in the export: the paid request got a 4xx with no settlement receipt and no transaction.
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).
0/3
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
08-28 12:20settle_failed400—141 ms
5000 units (≈ $0.005 USDC) · L2 not_checkedWhose side: vet402's side
08-21 08:33settle_failed400—152 ms
5000 units (≈ $0.005 USDC) · L2 not_checkedWhose side: vet402's side
08-14 10:04settle_failed400—114 ms
5000 units (≈ $0.005 USDC) · L2 not_checkedWhose side: vet402's side

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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