{"uid":"cap_NdoUGtO8mjl-36F8xlCEC","slug":"youraitools-counterparty-quick-check-edf897ff","name":"YourAITools Counterparty Quick Check","description":"Crypto counterparty due diligence API. Counterparty due-diligence report: everything in lite plus contract verification and deployer screening (Sourcify), ENS and Basename (forward-verified), cross-chain presence (wrong-chain protection for smart wallets and Safes), Safe owner and contract owner screening and explorer labels. Verdict ok / caution / block with reasons and confidence.","url":"https://api.youraitools.co/counterpartycheck/v1/quick?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: wallet due diligence, contract verification check, ens lookup, address reputation, crypto kyt, counterparty report"}},"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":"quick","chain":"ethereum","facts":{"kind":"eip7702_delegated_eoa","nonce":5969,"delegate":"0x5a7fc11397e9a8ad41bf10bf13f22b0a63f96f6d"},"checks":{"identity":{"ens":{"name":"vitalik.eth","verified":true}},"cross_chain":{"base":{"kind":"eoa","nonce":0}}},"intent":"pay","address":"0xd8da6bf26964af9d7eed9e03e53415d37aa96045","reasons":[{"code":"eip7702","text":"EOA with an EIP-7702 delegation to 0x5a7fc11397e9a8ad41bf10bf13f22b0a63f96f6d: its code is the delegate contract.","severity":"info"},{"code":"verified","text":"Delegate contract source verified on Sourcify.","severity":"good"},{"code":"ens","text":"ENS name vitalik.eth (reverse record, forward-verified).","severity":"good"}],"summary":"OK: no risk signal found for this eip7702 delegated eoa on Ethereum (verified, ens).","verdict":"ok","confidence":"high"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.015","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":"$0.015/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.015","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.015","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_AFXwYEjTtcwel1vHkr4F5","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.015","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Performs a rapid risk/trust check on a blockchain address (EVM or Solana), returning a verdict, risk reasons, identity signals, and cross-chain context.","exampleAgentPrompt":"Before I send that USDC payment, can you do a quick counterparty check on 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum and tell me if it's safe to pay?","exampleUseCases":[{"title":"Pre-payment risk check for DeFi agent","prompt":"I'm about to pay 50 USDC to 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base — can you run a quick counterparty check and tell me the verdict before I send it?"},{"title":"Token approval safety review","prompt":"I need to approve the address 0x5a7fc11397e9a8ad41bf10bf13f22b0a63f96f6d on Ethereum to spend my tokens — can you check if it's safe to approve, not just pay?"},{"title":"Solana wallet trust lookup","prompt":"Can you check whether this Solana wallet address 9WzDXwBbmkg8ZTbNMqUxvQRAyrZzDsGYdLVL9zYtAWWM is trustworthy before I interact with it?"}],"resultDescription":"Returns a JSON object containing: a 'verdict' field (ok/warn/alert), a 'confidence' level (high/medium/low), the detected 'kind' of address (eoa, contract, eip7702_delegated_eoa, etc.), ENS identity data if available, cross-chain presence on other networks, a list of 'reasons' with codes/severity/text explaining each signal found, and a human-readable 'summary' string.","failureModes":["Invalid or malformed address format returns an error","Unsupported chain identifier returns a validation error","Address with no on-chain history may return low-confidence results","Rate limiting or payment failure (402) if USDC payment not attached","Network timeouts on slow RPC nodes may delay response"],"whenToPreferThis":"Choose this endpoint when an AI agent needs a fast, single-call risk signal on a specific blockchain address before executing a payment, approval, or interaction. It is particularly valuable in agentic payment workflows (x402, USDC on Base/Solana) where the agent must decide in real time whether a counterparty is trustworthy. Prefer it over full audit tools when speed matters and a quick verdict with key signals (ENS, EIP-7702, cross-chain presence) is sufficient.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T12:44:52.928Z","isFirstParty":false,"canonicalSlug":"youraitools-counterparty-quick-check-edf897ff"}