x402-discovery.nishvault.com
No Recent Successful ChecksOnchain/Crypto Data0.01 USDC on Base for pre-send EVM transaction simulation for AI agents. Returns an x402 v2 challenge and, after payment, a preflight result (the service's own listing text; Data: x402-list.com (CC BY 4.0), modified)
Listed Vs. Actual Price
Main route. Listed = the listing we stored when this service was added, not re-read daily (x402-list; Data: x402-list.com (CC BY 4.0), modified). Actual = asked on our signed checks. Request-dependent prices can differ normally.
No price recorded yet.
What changed (last 30 days) #
From 2026-10-23 12:47 UTC. Stored checks cover about 7 days (label: last 30).
No measured changes in this window.
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
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Latest signed receipts
| Signed receipt | Time (UTC) | Reply | Asked For Payment Correctly | ms | Price Asked |
|---|---|---|---|---|---|
| a59fc6ce110404b9ab6a | 2026-10-30T00:46:25Z | 530 | No | 53 | |
| ecb4dfb66eb1a5679ea0 | 2026-10-29T02:20:16Z | 530 | No | 61 | |
| 884d6d3a933a70142c24 | 2026-10-27T10:16:17Z | 530 | No | 36 | |
| 7ef49b996c50ca43ae63 | 2026-10-24T19:34:22Z | 530 | No | 357 | |
| 49496237fce42050626e | 2026-10-24T01:04:16Z | 530 | No | 57 |
Signed, verifiable. Raw data · daily history (JSON) · free quick check (JSON)