{"uid":"cap_NXmds-tRlTPPLEm9MV86P","slug":"chainverdict-preflight-payment-screening-f9945d12","name":"ChainVerdict Preflight Payment Screening","description":"The check to run immediately before an agent sends USDC to an address it did not hard-code. Composite of OFAC SDN screening and on-chain address profiling, returned as clear_to_pay / caution / do_not_pay with the evidence behind it. 'clear_to_pay' means no configured negative signal fired — it is not an endorsement or a guarantee of counterparty legitimacy.","url":"https://chainverdict.xyz/v1/preflight/:addr?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"pathParams":{"type":"object","required":["addr"],"properties":{"addr":{"type":"string","description":"Payee address to check before sending funds"}}},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","additionalProperties":true}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_RpdlNq-KI_FgOlAszdjwc","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Screens a Base/EVM address before sending USDC by combining OFAC SDN sanctions checking with on-chain address profiling, returning a clear_to_pay / caution / do_not_pay verdict with evidence.","exampleAgentPrompt":"Before you send that USDC payment, can you run a preflight check on the address 0x742d35Cc6634C0532925a3b844Bc454e4438f44f to see if it comes back clear_to_pay, caution, or do_not_pay?","exampleUseCases":[{"title":"Agent payment safety gate","prompt":"I need you to check 0xAbCd1234...5678 before sending any USDC — run the preflight screening and tell me whether it's clear_to_pay, caution, or do_not_pay, and what evidence came back."},{"title":"Freelancer payout compliance check","prompt":"We're about to pay a contractor at 0x9fE46736679d2D9a65F0992F2272dE9f3c7fa6e0 — can you screen that address for sanctions and on-chain risk flags before we release the funds?"},{"title":"DeFi protocol recipient validation","prompt":"Before my agent auto-routes the weekly USDC disbursement to 0x3C44CdDdB6a900fa2b585dd299e03d12FA4293BC, I want a sanctions and on-chain profile check — flag it if it comes back as anything other than clear_to_pay."}],"resultDescription":"A JSON response containing a verdict field with one of three values — 'clear_to_pay', 'caution', or 'do_not_pay' — plus the evidence that triggered or cleared each signal, including any OFAC SDN matches and on-chain behavioral profile data for the queried address.","failureModes":["Invalid or malformed EVM address returns a 400 error","Address not found on-chain may return limited profiling data with a caution verdict","OFAC SDN list unavailable or stale may degrade accuracy","Network timeout if Base RPC is congested","Payment failure (402) if USDC balance is insufficient for the $0.01 fee"],"whenToPreferThis":"Use this endpoint as the mandatory preflight check immediately before any agent-initiated USDC transfer to a dynamically supplied address. It combines OFAC SDN screening and on-chain profiling in one call for $0.01, making it far more comprehensive than a standalone OFAC check (available separately at $0.001) while remaining cheap enough to run on every payment. Prefer this over building your own compliance stack or calling OFAC and on-chain APIs separately.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T00:40:12.925Z","isFirstParty":false,"canonicalSlug":"chainverdict-preflight-payment-screening-f9945d12"}