{"uid":"cap_vaz4X2-EWVuUdn93jdyY9","slug":"chainward-wallet-risk-check-api-f976ef59","name":"ChainWard Wallet Risk Check API","description":"Before your agent pays a Base or BNB Chain address: a verdict (pay / hold / unknown, shown as Pay, Hold, Inactive, No track record or Couldn't check) with the one reason ($0.05). For a seller: real or self-funded demand ($0.10). For a BNB Chain agent: hired by others or by its own circle ($0.10). Before every payment: an OFAC sanctions screen ($0.01). Evidence and limits under every verdict. Paid in USDC on Base over x402; a check that fails is never charged.","url":"https://api.chainward.ai/api/risk/wallet?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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","bsc"],"type":"string","default":"base","description":"Chain the address is on. Payment is USDC on Base either way."},"address":{"type":"string","pattern":"^0x[a-fA-F0-9]{40}$","description":"Address to check"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"data":{"type":"wallet","chain":"base","flags":[],"limits":"On-chain facts only. A shared funder is not proof of one owner, and exchanges and other hubs hide who funded a wallet. no_flags means none of these checks matched; it is not a clearance.","address":"0x4baadba26c3c0bdef9e8faf173925d463aa53bb2","verdict":{"label":"no_flags","reason":"None of the checks matched: sanctions, age, history and first funder."},"age_days":616,"balances":{"usdc":5451.386272,"native":0.01916580034492214},"sent_txs":87,"first_seen":"2025-02-04T12:26:09.000Z","sanctioned":false,"as_of_block":52553137,"last_active":"2026-01-30T15:58:27.000Z","first_funder":{"tx":"0xaf801c6252bb681fc6654b763a1d530cc3828c918dd34774e64a8a33d53e20f3","address":"0x0dff09a6733a12366236e62111a4ce93c475db78","sanctioned":false,"funded_wallets":null,"exchange_or_hub":true}},"success":true}},"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_rP4Y-qv9irX4Je5e8pr--","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":"Returns a pay/hold verdict with risk flags and OFAC sanctions screen for a Base or BNB Chain wallet address before payment","exampleAgentPrompt":"Before I send USDC to 0x4baadba26c3c0bdef9e8faf173925d463aa53bb2 on Base, can you run a ChainWard risk check on it and tell me if it's safe to pay — including any sanctions flags or hold recommendations?","exampleUseCases":[{"title":"Pre-payment sanctions screening","prompt":"I'm about to pay 0x9a3f2b1c4e8d7f6a5b0c3e2d1f4a8b7c6d5e4f3a on Base — can you do a quick ChainWard check to make sure it's not OFAC-sanctioned and shows a Pay verdict before I send anything?"},{"title":"Vetting a new freelance contractor wallet","prompt":"A contractor just sent me their BNB Chain address 0x1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c for payment — can you check it with ChainWard to see if it has real transaction history or looks self-funded and sketchy?"},{"title":"Automated agent payment guard","prompt":"My agent is about to make a payout to 0x7f8e9d0c1b2a3f4e5d6c7b8a9f0e1d2c3b4a5f6e on Base — run a ChainWard risk check first and only proceed if the verdict is Pay and there are no sanctions hits."}],"resultDescription":"A JSON object containing a verdict label (e.g. 'no_flags', 'hold', 'inactive'), a human-readable reason for the verdict, whether the address is OFAC-sanctioned, wallet age in days, sent transaction count, USDC and native token balances, first-seen and last-active timestamps, first funder details (including whether they are an exchange/hub and whether they are sanctioned), risk flags array, and a limits/caveats string explaining what the check does and does not prove.","failureModes":["Address parameter missing or malformed (not a valid 0x hex address) — returns error, no charge","Chain not supported — only 'base' and 'bsc' are valid values","Address data unavailable on-chain — verdict returned as 'unknown' or 'Couldn't check', no charge applied","Payment failure via x402 — check not executed","Rate limiting or API unavailability — request fails with error response"],"whenToPreferThis":"Use this endpoint when an AI agent or automated system needs a fast, per-call pre-payment risk check on a specific Base or BNB Chain wallet address. It is ideal for agentic payment flows that need lightweight OFAC sanctions screening and on-chain history signals before disbursing USDC. Prefer it over manual blockchain explorers when you need a structured pay/hold verdict with a stated reason rather than raw transaction data. It is best suited for single-address spot checks; for bulk audits or full dataset access, sibling endpoints on api.chainward.ai may be more appropriate.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T06:31:51.909Z","isFirstParty":false,"canonicalSlug":"chainward-wallet-risk-check-api-f976ef59"}