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X402 · Invoice Decode

Use before paying any x402 invoice: decodes a base64 PAYMENT-REQUIRED header (query ?header= or JSON body {header}) and checks scheme exact, Base mainnet, Base USDC asset, payTo (EOA/contract/EIP-7702), human amount, timeout; returns verdict ok/warn/fail with reasons. Errors: 400 invalid header. Read-only; never signs or pays.

GET https://x402-research-iota.vercel.app/api/x402/invoice-decode

0.02 USDC on Base · payTo 0xa26f179e42836bc4ae0cea997fdfc9602d5b8147

Status: unverified (probe-pending)

Settlement: direct to the seller's payTo — 0% HIVE402 take

Payment routes