{"uid":"cap_T1tYv0Q3IaVmhReWQrSkJ","slug":"chainverdict-preflight-address-check-api-9aa0f30c","name":"ChainVerdict Preflight Address Check API","description":"x402 v2 pay-per-call. Unpaid requests receive HTTP 402 with payment requirements.","url":"https://chainverdict.xyz/v1/preflight/%7Baddr%7D","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"},"pathParams":{"type":"object","required":["addr"],"properties":{"addr":{"type":"string","description":"Payee address to check before sending funds"}}},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","additionalProperties":true}}}}},"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_BY34X1kajA2t9ZeDCSnsG","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 blockchain payee address before sending funds to assess trustworthiness or risk","exampleAgentPrompt":"Before I send funds, can you run a preflight check on the address 0x1234abcd5678efgh9012ijkl3456mnop7890qrst to see if ChainVerdict flags it as risky or trustworthy?","exampleUseCases":[{"title":"Screen payee before crypto transfer","prompt":"I'm about to send 500 USDC to 0xAbCd1234EfGh5678IjKl9012MnOp3456QrSt7890 — can you do a preflight check on that address to make sure it's not flagged for fraud or scams?"},{"title":"Validate contractor wallet before payout","prompt":"We're onboarding a new contractor who gave us the wallet address 0x9999aaaabbbbcccc1111222233334444deadbeef — can you verify it with ChainVerdict before we process their first payment?"},{"title":"Audit saved payee addresses for risk","prompt":"I have a payee address 0xDEAD0000BEEF1111CAFE2222BABE3333FADE4444 saved in my system from a few months ago — can you run it through a preflight check to see if its verdict has changed?"}],"resultDescription":"Returns a verdict or risk assessment for the given blockchain address, indicating whether the address is considered safe, suspicious, or flagged — helping the caller decide whether to proceed with a payment or transaction.","failureModes":["Invalid or malformed blockchain address returns an error response","Unpaid request returns HTTP 402 with x402 payment requirements","Address not found in database may return unknown/neutral verdict","Network timeout if the chain analysis backend is slow","Non-existent or zero address may return an error"],"whenToPreferThis":"Use this endpoint when you need a quick, pay-per-call preflight risk check on a specific blockchain wallet address before executing a payment or transfer. It is ideal for agentic payment workflows that need to gate transactions behind an address reputation check without committing to a subscription. Prefer this over manual on-chain inspection when you need a structured, actionable verdict rather than raw transaction history.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T12:39:32.893Z","isFirstParty":false}