{"uid":"cap_JdRL4HCOMPqed35DtTx38","slug":"counterparty-kyb-vendor-payee-vetting-618f385f","name":"Counterparty / KYB / Vendor & Payee Vetting","description":"Counterparty / KYB / vendor and payee vetting in one call: OFAC sanctions screen of a name and crypto wallet, company identity (industry, HQ, size), domain age, email (MX, DMARC) and website checks, and an on-chain wallet risk check (Base, Ethereum). Returns block / review / clear with the reasons. Use before paying or onboarding someone. $0.02 USDC per call.","url":"https://x402-agent-api.onrender.com/api/v1/counterparty-check?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"via":{"type":"string","maxLength":64,"description":"Optional: the tool whose next_calls suggested this call (filled in for you)."},"name":{"type":"string","maxLength":200,"minLength":2,"description":"The company or person, e.g. \"Acme Robotics Inc.\" Screened against OFAC and looked up as a company."},"chain":{"enum":["base","ethereum"],"type":"string","default":"base","description":"Chain of `wallet`: \"base\" (default) or \"ethereum\"."},"domain":{"type":"string","maxLength":300,"minLength":3,"description":"Their website or email domain, e.g. \"acme.com\" (a URL or an email address is accepted)."},"wallet":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$","description":"The EVM address you would pay or receive from, e.g. an x402 payTo."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_q_vh0p3yuTg2E7o8d3_-e","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Screens a company or person against OFAC sanctions, checks company identity, domain age, email infrastructure, and on-chain wallet risk in a single call, returning a block/review/clear verdict with reasons.","exampleAgentPrompt":"Before I pay Acme Robotics Inc. at wallet 0xAbC1234567890AbC1234567890AbC1234567890Ab on Base from their domain acme.com, run a full counterparty check — OFAC screen, company lookup, domain age, email validity, and on-chain wallet risk — and tell me if I should block, review, or clear them.","exampleUseCases":[{"title":"Screen vendor before first payment","prompt":"I'm about to pay Globex Logistics LLC for the first time — their wallet is 0x1A2B3C4D5E6F7A8B9C0D1E2F3A4B5C6D7E8F9A0B on Ethereum and their domain is globexlogistics.com. Can you vet them against OFAC, check their company info, and tell me if it's safe to pay?"},{"title":"Onboard new crypto payee with KYB","prompt":"We're onboarding a new supplier called Meridian Tech Partners — domain meridiantechpartners.com, Base wallet 0xDeAdBeEf0000000000000000000000000000dEaD. Run a full KYB and sanctions check and tell me whether to approve, hold for review, or block them."},{"title":"Validate counterparty before DeFi deal","prompt":"Before we finalize this DeFi deal with NovaPay Solutions (nopaysolutions.io), I need you to screen their Ethereum wallet 0xFEeDFaCe0000000000000000000000000000CAFE for on-chain risk and check if the company and domain look legitimate — give me a clear/review/block recommendation."}],"resultDescription":"Returns a verdict of block, review, or clear along with the specific reasons: OFAC sanctions match status for the name, company identity details (industry, headquarters, size), domain registration age, email MX and DMARC record validity, website reachability, and an on-chain wallet risk assessment for the provided EVM address on Base or Ethereum.","failureModes":["Invalid wallet address format (must match 0x + 40 hex chars) returns validation error","Name too short (under 2 chars) or too long (over 200 chars) rejected","Domain not resolvable or unreachable may return partial results with missing domain/email checks","Unknown or unsupported chain value returns enum validation error","OFAC or third-party data source downtime may cause incomplete screening results","Payment failure (insufficient USDC balance) returns 402 before processing"],"whenToPreferThis":"Choose this endpoint when you need a single-call, all-in-one counterparty due diligence check that combines OFAC sanctions screening, company KYB, domain/email infrastructure validation, and on-chain wallet risk — especially before making an automated crypto payment or onboarding a new vendor. Prefer this over point-solution tools when you need a combined block/review/clear verdict with consolidated reasoning rather than assembling separate API results yourself.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T12:41:42.006Z","isFirstParty":false,"canonicalSlug":"counterparty-kyb-vendor-payee-vetting-618f385f"}