{"uid":"cap_WcaDTzxY5hbpquMa_8Tck","slug":"blockchain-address-risk-check-pass-review-block-58003bd5","name":"Blockchain Address Risk Check (Pass/Review/Block)","description":"Check before you pay or trade: pass / review / block for one wallet or contract address (EVM chains, Solana). Use it before you pay, trade with or approve an address: one cheap call returns pass, review or block with the reasons and the list dates.","url":"https://twin.unykorn.org/check/address?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"params":{"type":"object","required":["value"],"properties":{"ref":{"type":"string","pattern":"^[\\x20-\\x7E]{1,64}$","maxLength":64,"description":"your own job or payment id, up to 64 printable characters, echoed back and bound into the signed receipt"},"chain":{"enum":["base","ethereum","polygon","arbitrum","optimism","solana"],"type":"string","default":"base","description":"base | ethereum | polygon | arbitrum | optimism | solana; default base for an EVM address, solana for a Solana address"},"value":{"type":"string","maxLength":200,"minLength":1,"description":"the wallet or contract address, a 0x-prefixed 40-hex EVM address or a base58 Solana address"},"address":{"type":"string","maxLength":200,"deprecated":true,"description":"deprecated alias of value"},"max_age_s":{"type":"integer","default":3600,"maximum":86400,"minimum":0,"description":"the oldest cached result you accept, 0-86400 seconds, default 3600; 0 forces fresh on-chain reads"}},"additionalProperties":false}}},"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_iP6bdESH5Mmc-1ZdhYM41","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 a wallet or contract address on EVM chains or Solana and returns a pass, review, or block verdict with reasons and list dates.","exampleAgentPrompt":"Before I send funds, can you screen this Ethereum address 0x742d35Cc6634C0532925a3b844Bc454e4438f44e and tell me if it passes, needs review, or should be blocked — use fresh data, not cached results?","exampleUseCases":[{"title":"Pre-payment wallet safety check","prompt":"I'm about to pay 500 USDC to 0xAbCd1234...5678 on Base — can you check if that address is flagged or safe before I send anything?"},{"title":"DeFi contract approval screening","prompt":"Before I approve this Arbitrum contract at 0xDEAD...BEEF to spend my tokens, run a risk check on it and tell me if it's been reported for anything suspicious."},{"title":"Solana trading counterparty vetting","prompt":"I'm about to trade with this Solana wallet 7xKp...mN3q — can you check whether it passes, needs review, or should be blocked, and give me the reasons?"}],"resultDescription":"Returns a verdict of pass, review, or block for the queried address, along with the specific reasons for any negative signals (e.g. sanctions lists, exploit reports, scam associations) and the dates the address appeared on relevant lists. Also returns an echoed reference ID and a signed receipt for audit purposes.","failureModes":["Invalid or malformed address format returns a validation error","Unsupported chain specified returns an enum validation error","max_age_s out of 0–86400 range causes a parameter error","Temporary unavailability of on-chain data sources may delay fresh reads","Payment failure via x402 protocol blocks the request","Very new addresses with no history may return pass with low signal confidence"],"whenToPreferThis":"Use this endpoint when you need a quick, cheap ($0.01 USDC) risk verdict on a single blockchain address before executing a payment, trade, or contract approval. It is particularly suited for pre-transaction due diligence on EVM chains (Base, Ethereum, Polygon, Arbitrum, Optimism) and Solana. Prefer this over manual chain explorers or more expensive compliance APIs when you need a programmatic pass/review/block decision with reasons, especially in automated agent workflows where speed and cost matter.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T06:51:45.143Z","isFirstParty":false,"canonicalSlug":"blockchain-address-risk-check-pass-review-block-58003bd5"}