{"slug":"quartermaster-surewhynot-app-v1-settlement-assurance-10ec75","title":"Settlement assurance for a completed x402 payment on Base or Solana","host":"quartermaster.surewhynot.app","method":"GET","resource":"https://quartermaster.surewhynot.app/v1/settlement-assurance","category":"code","description":"Settlement assurance for a completed x402 payment on Base or Solana: confirm the transaction succeeded (0x hash or base58 signature), match the USDC transfer to an expected wallet and amount, format a receipt, and optionally audit the issuing endpoint - as one 0-100 scored report with a verdict.","price_listed":0.03,"price_asked":null,"state":"effects","state_label":"Not tested: has real-world effects","checks_7d":0,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"amount":"0.001","hash":"0x06be01596be1cb68d9b12a33946d2228a82eeb31016ab237825cec547017095f","payTo":"0xc2a3...4083","resource":"https://api.example.com/paid-endpoint"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"amount":{"description":"Optional: assert the USDC amount (human decimal)","type":"string"},"hash":{"description":"Base transaction hash of the settlement","pattern":"^0x[0-9a-fA-F]{64}$","type":"string"},"payTo":{"description":"Optional: assert USDC reached this wallet","type":"string"},"resource":{"description":"Optional: also audit the x402 endpoint that issued the challenge","type":"string"}},"required":["hash"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[],"description_full":"Settlement assurance for a completed x402 payment on Base or Solana: confirm the transaction succeeded (0x hash or base58 signature), match the USDC transfer to an expected wallet and amount, format a receipt, and optionally audit the issuing endpoint - as one 0-100 scored report with a verdict.","last_updated":"2026-09-18T03:42:00.754Z","schemes":["exact"]}