x402-v2-mint-isbn-lookup.vercel.app
No Payment Request On Last CheckOtherPay-per-call service
19/20Recent test calls that worked
237 msTypical response time (slow end: 567 ms)
$0.003Price asked on our checks
Same AddressPayment Address (payTo): the same on all 104 checks of the main route
3Directories listing it
3 min agoLast checked (2026-11-02T07:32:13Z). Quick check: a signed receipt is saved only when something changes; last signed receipt 67 min ago
Price Asked
Main route, as asked on our signed checks. We found this service through a directory we use only to find services, so its listed price is not shown or compared.
| Period | Actual |
|---|---|
| Since 2026-10-30 (daily summaries + today's latest 80 checks) | $0.003 |
What changed (last 30 days) #
From 2026-10-30 17:36 UTC. Stored checks cover about 7 days (label: last 30).
| When (UTC) | What changed | Measured | Signed record |
|---|---|---|---|
| 2026-11-02 06:28 | HTTP reply changed | 402 → 503 | Signed receipt |
| 2026-11-02 06:28 | Payment request changed | valid 402: yes → no | Signed receipt |
Our unpaid checks only. Each row links the signed record for the new state. Full machine-readable history (NDJSON) is on Data Pro. See plans · Reply or dispute
Watch this host Email when measured facts change · 1 tool free for 30 days · up to 50 with Pro.
Latest signed receipts
| Signed receipt | Time (UTC) | Reply | Asked For Payment Correctly | ms | Price Asked |
|---|---|---|---|---|---|
| 8aa258185cec128f9441 | 2026-11-02T06:28:18Z | 503 | No | 192 | |
| 7ac22e63311e02e62edf | 2026-11-02T05:52:18Z | 402 | Yes | 337 | $0.003 |
| 57596a03dc262e7e9dcf | 2026-11-02T05:16:21Z | 402 | Yes | 237 | $0.003 |
| 1f29508a84e459725d94 | 2026-11-02T04:40:23Z | 402 | Yes | 184 | $0.003 |
| 7f0328836bd381446e6d | 2026-11-02T04:04:28Z | 402 | Yes | 284 | $0.003 |
Signed, verifiable. Raw data · free quick check (JSON)