{"uid":"cap_RDjrxgztVlDQ7x9CORpA9","slug":"base-pay-to-address-screen-72d74a6d","name":"Base Pay-To Address Screen","description":"Pay-to / counterparty address screen for Base: exact match against OFAC SDN published digital currency addresses (daily refresh, list date included), contract vs EOA, Blockscout verification, first-seen age and tx count, lookalike (address-poisoning) check vs an optional compare_to, labels, and a block/caution/ok verdict. $0.005 USDC. Screening aid only, not a compliance clearance or legal advice.","url":"https://api.x402risk.com/v1/address-screen?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"address":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$","description":"EVM address to screen (Base, chain 8453)"},"compare_to":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$","description":"Optional intended recipient address; flags a lookalike (address-poisoning) match"}}},"responseSchema":{"type":"json","example":{"chain":"base","cached":false,"errors":[],"labels":[],"status":"ok","address":"0x098B716B8Aaf21512996dC57EB0615e2383E2f96","product":"address-screen","reasons":["exact match to an OFAC SDN digital currency address (LAZARUS GROUP; list date 2026-09-23)"],"sources":["ofac-sdn","base-rpc","blockscout"],"verdict":"block","activity":{"tx_count_indexed":0,"outgoing_tx_count":0,"first_seen_age_days":798.4,"first_seen_is_lower_bound":false},"chain_id":8453,"contract":null,"lookalike":null,"sanctions":{"list":"OFAC SDN (Specially Designated Nationals) - digital currency addresses","matches":[{"sdn_uid":"23036","programs":["DPRK3"],"sdn_name":"LAZARUS GROUP","sdn_type":"Entity","currency_tag":"ETH"}],"list_date":"2026-09-23","sanctioned":true},"disclaimer":"Screening aid only, not a compliance clearance or legal advice. Sanctions result is an exact match against EVM-format digital currency addresses published in the OFAC SDN list as of list_date; a non-match does not mean an address or its owner is not sanctioned or is safe. On-chain facts and labels come from public sources and can be incomplete.","sanctioned":true,"is_contract":false,"block_number":35000000,"schema_version":"1.0","eip7702_delegated_eoa":false}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_tS4nE9rKmIp8jX5uIcrTW","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","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 against OFAC SDN sanctions, detects address-poisoning lookalikes, checks contract vs EOA status, and returns a block/caution/ok verdict with labels and risk reasons.","exampleAgentPrompt":"Before I send funds, screen the Base address 0x098B716B8Aaf21512996dC57EB0615e2383E2f96 against OFAC sanctions and check if it looks like a lookalike of my intended recipient 0xAbCd1234567890abcdef1234567890abcdef1234 — give me the verdict.","exampleUseCases":[{"title":"Pre-payment sanctions check for DeFi wallet","prompt":"I'm about to send USDC to 0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD on Base — can you screen it against OFAC first and tell me if it's blocked or safe?"},{"title":"Address poisoning detection before withdrawal","prompt":"My wallet history shows a recent transfer to 0x1234567890abcdef1234567890abcdef12345678 but I'm not sure it's the real recipient — screen it against OFAC and compare it to my intended address 0x1234567890abcdef1234567890abcdef12345679 to see if I'm being poisoned."},{"title":"Compliance review of counterparty address","prompt":"Our compliance team needs to know if the counterparty address 0xdAC17F958D2ee523a2206206994597C13D831ec7 on Base is on any OFAC sanctions list — run a full screen and show me the sanctions details and verdict."}],"resultDescription":"Returns a JSON object with a verdict field (block, caution, or ok), sanctions match details including SDN name/program/list date, contract vs EOA classification, address activity stats (tx count, first-seen age), lookalike detection result vs compare_to, address labels, data sources used, and a disclaimer. A 'block' verdict means an exact OFAC SDN match was found.","failureModes":["Invalid address format (not a valid 0x EVM address) returns a validation error","Address not yet indexed on Blockscout may result in incomplete activity data with first_seen_is_lower_bound=true","OFAC SDN list may lag real-world updates by up to one day due to daily refresh cycle","compare_to address that is itself malformed causes lookalike check to fail","Network or RPC errors may result in partial source data with errors array populated","Payment failure (insufficient USDC or x402 protocol error) prevents the call from completing"],"whenToPreferThis":"Use this endpoint when you need fast, pay-per-call OFAC SDN screening of a specific Base (chain 8453) EVM address before executing a payment or trade, especially when you also want address-poisoning detection, contract/EOA classification, and labels — all in one call for $0.005 USDC. Prefer it over generic blockchain explorers when you need a structured, machine-readable compliance verdict with sanctions list metadata rather than a manual lookup.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T00:42:01.967Z","isFirstParty":false,"canonicalSlug":"base-pay-to-address-screen-72d74a6d"}