{"uid":"cap_J3VU5JAr0yiy6GH9N0oyt","slug":"chainward-ofac-sdn-sanctions-screen-469ab365","name":"ChainWard OFAC SDN Sanctions Screen","description":"Paste any Base or BNB Chain address before you pay or hire it. ChainWard tells you Pay or Hold, and why, from the wallet’s on-chain history. Free.","url":"https://api.chainward.ai/api/risk/sanctions?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["address"],"properties":{"address":{"type":"string","pattern":"^0x[a-fA-F0-9]{40}$","description":"Base address to check"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"data":{"list":{"name":"US Treasury OFAC SDN list, digital currency addresses (EVM)","source":"https://github.com/0xB10C/ofac-sanctioned-digital-currency-addresses","addresses":124,"fetched_at":"2026-10-11"},"limit":"Not listed is not a clearance: wallets that belong to or deal with a listed party, and addresses added after the snapshot date, are not covered. For behavior (activity, counterparties, flags) use the counterparty check.","address":"0x4baadba26c3c0bdef9e8faf173925d463aa53bb2","verdict":{"text":"Not listed","label":"not_listed","reason":"This exact address is not among the 124 EVM addresses OFAC has published."},"full_check":"https://api.chainward.ai/api/risk/x402?address=0x4baadba26c3c0bdef9e8faf173925d463aa53bb2","sanctioned":false},"success":true}},"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_SDLCL-3PE-uUyQ6r9U4lF","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":"Checks whether a given EVM address appears on the US Treasury OFAC SDN digital currency address list, returning a Hold or Not Listed verdict with snapshot date.","exampleAgentPrompt":"Before you send that payment, run a quick OFAC sanctions check on 0x4baadba26c3c0bdef9e8faf173925d463aa53bb2 — I need to know if it's on the US Treasury SDN list.","exampleUseCases":[{"title":"Pre-payment compliance gate for agent","prompt":"I'm about to pay out 50 USDC to 0x4baadba26c3c0bdef9e8faf173925d463aa53bb2 — can you first check if that address is on the OFAC SDN sanctions list and hold the payment if it is?"},{"title":"DeFi protocol counterparty screening","prompt":"Before my agent interacts with wallet 0xAbCd1234567890abcdef1234567890abcdef1234 on-chain, check whether it's flagged on the US Treasury OFAC digital currency sanctions list."},{"title":"Automated contractor payout verification","prompt":"We're batch-paying freelance agents today — can you screen 0x9f8c3b7e2d1a4f6e5c0b8a7d3e2f1c9b8a7d3e2f against OFAC's SDN list before we release funds?"}],"resultDescription":"Returns a JSON object with a 'sanctioned' boolean, a verdict object containing a human-readable text label ('Not listed' or 'Hold'), a machine-readable label ('not_listed' or 'sanctioned'), a reason string, the number of EVM addresses in the current OFAC snapshot, the snapshot fetch date, and a URL for a fuller counterparty risk check. Also includes a limit disclaimer that 'Not listed' is not a legal clearance.","failureModes":["Invalid address format (not a valid 0x EVM address) — likely returns an error or 400 response","Address added to OFAC list after the snapshot date — will incorrectly return Not listed","Wallet indirectly associated with sanctioned party but not directly listed — not caught by this endpoint (use full counterparty check)","Payment failure for the $0.01 USDC x402 fee — call blocked","Stale snapshot if ChainWard has not refreshed the OFAC data recently"],"whenToPreferThis":"Use this endpoint when you need a fast, cheap ($0.01), per-address OFAC SDN direct-match check on any EVM address before executing a blockchain payment. Prefer this over the full ChainWard counterparty check when you only need to confirm an address is not directly listed on the OFAC SDN digital currency list, and cost or latency is a concern. Not a substitute for full AML/KYC or behavioral analysis.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T12:30:05.414Z","isFirstParty":false,"canonicalSlug":"chainward-ofac-sdn-sanctions-screen-469ab365"}