{"uid":"cap_OXi5S4rFCS_PvT0D5xbaF","slug":"counterpartycheck-full-by-agentgate-52819cf7","name":"CounterpartyCheck Full by AgentGate","description":"Full crypto counterparty due diligence API. Full counterparty due diligence before an agent pays or interacts: quick plus age (first transaction or creation block), recent activity and direct exposure to sanctioned or scam-listed addresses, recent token approvals to the address (drainer pattern) and TokenVerdict for Base tokens; Solana adds history depth. Verdict ok / caution / block with reasons, confidence and missing_data.","url":"https://api.youraitools.co/counterpartycheck/v1/full?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":{"chain":{"enum":["base","ethereum","polygon","arbitrum","solana"],"type":"string","description":"Chain of the payment (default base; a base58 address implies solana)"},"intent":{"enum":["pay","approve","interact"],"type":"string","description":"What you are about to do (default pay): changes which signals matter, e.g. paying a token contract or approving an EOA"},"address":{"type":"string","description":"Counterparty address: EVM 0x + 40 hex, or a Solana base58 address"}},"description":"Search intents: full wallet due diligence, address exposure check, drainer approvals check, wallet age, crypto risk report, counterparty aml"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"tier":{"type":"string"},"chain":{"type":"string"},"facts":{"type":"object"},"checks":{"type":"object"},"intent":{"type":"string"},"address":{"type":"string"},"reasons":{"type":"array"},"summary":{"type":"string"},"verdict":{"type":"string"},"confidence":{"type":"string"}}}}}}},"responseSchema":{"type":"json","example":{"tier":"full","chain":"base","facts":{"kind":"contract","token":{"symbol":"USDC","decimals":6}},"checks":{"age":{"at":"2023-08-18T18:36:29.000Z","days":1160,"basis":"contract creation block","block":2797221,"known":true}},"intent":"pay","address":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","reasons":[{"code":"token_contract","text":"This is the USDC token contract itself, not a wallet: tokens sent to a token contract are usually lost.","severity":"danger"},{"code":"known_label","text":"Known address: USDC (Circle, Base).","severity":"good"},{"code":"verified","text":"Contract source verified on Sourcify (FiatTokenProxy).","severity":"good"},{"code":"established","text":"Established: contract creation block 1160 days ago (2023-08-18).","severity":"good"}],"summary":"BLOCK: This is the USDC token contract itself, not a wallet: tokens sent to a token contract are usually lost.","verdict":"block","confidence":"high"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_jmZJCaBUj-WahZ1lQNAIJ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Performs a comprehensive pre-payment counterparty check on an EVM or Solana address, returning a verdict (block/warn/pass), confidence level, risk reasons, and on-chain facts before an agent sends funds.","exampleAgentPrompt":"Before I send 50 USDC to 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913 on Base, run a full counterparty check to make sure it's actually a safe wallet and not a token contract or known scam address.","exampleUseCases":[{"title":"Safe-to-pay check before agent disbursement","prompt":"I'm about to send a payment to 0xAbC123...def456 on Ethereum — run a full counterparty check on that address with intent 'pay' so I know if it's a real wallet and not a contract that'll eat my funds."},{"title":"Token approval safety screen","prompt":"Before I approve the contract at 0x1234...abcd on Arbitrum to spend my tokens, do a counterparty check with intent 'approve' and tell me if there are any danger signals I should know about."},{"title":"Solana wallet verification before payout","prompt":"Check if the Solana address 7xKXtg2CW87d97TXJSDpbD5jBkheTqA83TZRuJosgAsU is safe to pay — I need a full counterparty verdict before my agent sends any USDC there."}],"resultDescription":"Returns a JSON object with: verdict (block/warn/pass), confidence (high/medium/low), a human-readable summary, an array of reasons each with a severity (danger/warn/good) and explanatory text, on-chain facts (contract vs EOA, token metadata if applicable), address age and creation block, chain, and the original intent and address echoed back.","failureModes":["Missing or malformed address returns a validation error","Unsupported chain value returns an enum error","Address not found on specified chain may return limited facts with lower confidence","Network or RPC timeout may cause delayed or failed response","Solana address passed without specifying solana chain may default to base and fail lookup"],"whenToPreferThis":"Use this endpoint when an AI agent needs a comprehensive, multi-signal risk assessment before executing a crypto payment or approval — especially when the agent must justify its decision with labeled reasons and severity levels. Prefer the full tier over lighter checks when the payment is significant, the counterparty is unknown, or you need to distinguish token contracts from wallets, check verification status, and get an establishment age. Choose this over a simple sanctions screen (PayGuard) when you want on-chain contract analysis, not just OFAC matching.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T12:33:59.373Z","isFirstParty":false,"canonicalSlug":"counterpartycheck-full-by-agentgate-52819cf7"}