Why did my transaction fail?

Paste a transaction hash. You get the decoded revert reason (error strings, panic codes, and custom errors resolved by signature), gas used vs limit, and a plain-language fix. Pending transactions get a stuck-transaction diagnosis. Free for people, up to 20 checks a day.

x402 seller: audit my whole origin (free, 3 a day)

Why does x402scan or the CDP Bazaar skip my routes? Reads your /openapi.json like the indexers do, probes your paid routes unpaid with your own examples, and checks which routes the Bazaar has indexed for your payTo. Takes up to a minute.

Origin

Transaction

x402 endpoint preflight

Sellers: find out why x402scan or the Bazaar skipped your route. Buyers: check a paid endpoint before paying it.

POST body (optional)

Website check

URL or host

Domain lookup

Domain

EVM address: EOA, contract or EIP-7702?

Address

Route still broken or unlisted? x402 Listing Fix, $29: a patch within 12 hours and a stated acceptance test (paid in discovery, valid 402, x402scan registers with 0 failures), or a full refund. Details and order.

Need a person to dig into a failed or stuck transaction, a contract interaction that keeps reverting, or an x402 route that will not list? Email [email protected] with the hash or URL. Agents: the same tools are pay-per-call over x402 at pitcrew-api.appin60.com.