base-gas-x402-production.up.railway.app/gas
1.Catalog declaration
| Resource URL | https://base-gas-x402-production.up.railway.app/gas |
| Source | cdp_bazaar |
| Declared method | GET |
| Network | eip155:8453 |
| Receiving address | 0x0d083590c048a243e24a75e3a7c968145de25b44 |
| Declared price (base units) | 5000 |
| Catalog status | active |
| First seen / last seen | 2026-08-14 08:39 UTC / 2026-09-29 01:02 UTC |
| Catalog-reported calls / payers (30d) | 682 / 8 |
2.Probe history
| Probed at | Method | Verdict | HTTP | Latency | Reason |
|---|---|---|---|---|---|
| 2026-09-28 16:40 UTC | GET | pass | 402 | 178 ms | — |
| 2026-09-27 22:40 UTC | GET | pass | 402 | 158 ms | — |
| 2026-09-27 04:40 UTC | GET | pass | 402 | 378 ms | — |
| 2026-09-26 16:40 UTC | GET | pass | 402 | 148 ms | — |
| 2026-09-25 22:40 UTC | GET | pass | 402 | 185 ms | — |
| 2026-09-25 04:40 UTC | GET | pass | 402 | 339 ms | — |
| 2026-09-24 13:40 UTC | GET | pass | 402 | 423 ms | — |
| 2026-09-23 16:40 UTC | GET | pass | 402 | 441 ms | — |
| 2026-09-22 22:40 UTC | GET | pass | 402 | 191 ms | — |
| 2026-09-22 04:40 UTC | GET | pass | 402 | 227 ms | — |
| 2026-09-21 13:40 UTC | GET | pass | 402 | 148 ms | — |
| 2026-09-20 16:40 UTC | GET | pass | 402 | 135 ms | — |
| 2026-09-19 22:40 UTC | GET | pass | 402 | 148 ms | — |
| 2026-09-19 04:40 UTC | GET | pass | 402 | 222 ms | — |
| 2026-09-18 16:40 UTC | GET | pass | 402 | 130 ms | — |
| 2026-09-17 22:40 UTC | GET | pass | 402 | 144 ms | — |
| 2026-09-17 04:40 UTC | GET | pass | 402 | 154 ms | — |
| 2026-09-16 16:40 UTC | GET | pass | 402 | 428 ms | — |
| 2026-09-15 16:40 UTC | GET | pass | 402 | 121 ms | — |
| 2026-09-15 04:40 UTC | GET | pass | 402 | 544 ms | — |
| 2026-09-14 13:40 UTC | GET | pass | 402 | 199 ms | — |
| 2026-09-13 16:40 UTC | GET | pass | 402 | 141 ms | — |
| 2026-09-13 04:40 UTC | GET | pass | 402 | 165 ms | — |
| 2026-09-12 16:40 UTC | GET | pass | 402 | 128 ms | — |
| 2026-09-11 22:40 UTC | GET | pass | 402 | 235 ms | — |
| 2026-09-11 13:40 UTC | GET | pass | 402 | 118 ms | — |
| 2026-09-10 23:40 UTC | GET | pass | 402 | 846 ms | — |
| 2026-09-10 05:40 UTC | GET | pass | 402 | 553 ms | — |
| 2026-09-09 17:40 UTC | GET | pass | 402 | 245 ms | — |
| 2026-09-09 05:40 UTC | GET | pass | 402 | 2200 ms | — |
3.L1 — real purchases
3 of 3 paid attempts settled with a receipt, and 3 of those also returned a 2xx response (delivered). Each settled row carries its on-chain transaction hash — the receipt is the evidence. 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).
| Attempted at | Result | HTTP | Receipt (tx) | Latency |
|---|---|---|---|---|
| 09-16 12:092026-09-16 12:09 UTC | settled (nonce-bound) | 200 | 0x8a4967d5…503c | 1172 ms |
| 5000 units (≈ $0.005 USDC) · L2 no_declarationWhose side: no failure (delivered) | ||||
| 09-10 01:012026-09-10 01:01 UTC | settled (nonce-bound) | 200 | 0xa0fa1efb…cc18 | 1524 ms |
| 5000 units (≈ $0.005 USDC) · L2 no_declarationWhose side: no failure (delivered) | ||||
| 09-02 07:022026-09-02 07:02 UTC | settled (amount + payee) | 200 | 0x51e19c6a…7734 | 1394 ms |
| 5000 units (≈ $0.005 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.
[](https://vet402.com/observatory/e/c601dfa2-d02d-4c45-b9c5-79da79c5656d)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.