{"uid":"cap_P_ZmSoZIgUIEFVibqFgWb","slug":"nimbus-onchain-data-api-self-dealing-check-cdebefcf","name":"Nimbus Onchain Data API – Self-Dealing Check","description":"x402 pay-per-call. Payments are per request in USDC and are final. No refunds on-chain. Service is provided as-is and may change or stop without notice. Informational data only, not financial, investment, legal, or tax advice. Metrics such as net transfer volume estimates and wallet clusters are algorithmic estimates from public blockchain data and may be wrong or delayed. Provided as-is with no warranty. Methodology: https://crypto-data-api-zo95.onrender.com/methodology.","url":"https://crypto-data-api-zo95.onrender.com/v1/address/self-dealing-check?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["address"],"properties":{"hours":{"type":"string","pattern":"^[1-6]$","description":"1-6, default 6"},"address":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"checks_run":{"type":"array"},"disclaimer":{"type":"string"},"generated_at_utc":{"type":"string"}}}}}}},"responseSchema":{"type":"json","example":{"address":"0x...","summary":"No issues found in these checks as of 2026-09-29T19:40:00Z. ...","checks_run":[{"id":"self_transfers","ran":true,"flagged":false}],"disclaimer":"...","checked_at_utc":"2026-09-29T19:40:00Z"}},"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_14SIQOn6gvGWNEsMQL1c3","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":"Checks a blockchain wallet address for self-dealing behavior (e.g. wash trading, circular transfers) over a configurable time window and returns flagged findings","exampleAgentPrompt":"Run a self-dealing check on the Ethereum wallet 0xAbC123...def456 over the last 6 hours and tell me if any suspicious circular transfers or wash trading was flagged.","exampleUseCases":[{"title":"Pre-investment wallet due diligence","prompt":"Before I buy into this token project, can you check if the deployer wallet 0x1234567890abcdef1234567890abcdef12345678 has been self-dealing or wash trading in the last 6 hours?"},{"title":"NFT wash trading detection","prompt":"I'm evaluating an NFT collection — can you run a self-dealing check on the creator wallet 0xdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef to see if they've been faking volume?"},{"title":"DeFi protocol address screening","prompt":"Can you screen the wallet 0xabcdefabcdefabcdefabcdefabcdefabcdefabcd for any self-transfer or circular transaction patterns over the past 3 hours?"}],"resultDescription":"Returns a JSON object with the queried address, a plain-English summary of findings, an array of named checks that were run (each with a flag indicating whether it was triggered), a disclaimer, and a UTC timestamp of when the check was performed.","failureModes":["Invalid Ethereum address format (must match 0x + 40 hex chars) returns validation error","Hours parameter outside 1-6 range is rejected","Service may be temporarily unavailable as it runs on Render free tier (cold starts possible)","Data may be delayed or incomplete for very recent blocks","Payment failure via x402 prevents request from being fulfilled"],"whenToPreferThis":"Use this endpoint when you need a quick, affordable ($0.02/call) automated signal on whether a specific Ethereum wallet exhibits self-dealing or wash trading behavior. Ideal for pre-investment screening, NFT volume authenticity checks, and DeFi due diligence workflows where a fast algorithmic flag (not a full audit) is sufficient.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T18:41:49.397Z","isFirstParty":false,"canonicalSlug":"nimbus-onchain-data-api-self-dealing-check-cdebefcf"}