{"service":"code402-verify","version":"1.5.0","transport":"MCP over JSON-RPC 2.0 (Streamable HTTP): POST to this URL","tool":{"name":"x402_verify","input":{"raw_receipt":"string — the full signed XDR-1 receipt JSON","settlement_asset":"string? — default USDC"}},"rest":"POST /v1/receipt/verify with { receipt: <XDR-1 receipt> } or the receipt object directly","free":true,"verifies":"XDR-1 receipts: keccak over the canonical receipt, secp256k1 signer recovery, compared to the declared signer","machine_surface":"https://hcrb.in","human_surface":"https://code402.dev","offline_audit":"https://hcrb.in/.well-known/jwks.json — XDR-1 verifying key (ES256K JWK, kid = signer address); verify receipts without calling anyone","uptime_hint":"dedicated worker — no monolith cold start"}