Payment security firewall scan for an INCOMING x402 payment request (402 offer): resource URL risk, credential-demand detection, price sanity, replay detection, canonical-USDC asset verification, merchant pinning, and counterparty reputation. Returns allow/flag/block with per-check reasons and an Ed25519-signed verdict. Advisory and non-custodial.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.01 USDC | 0x3C42...7745 |