{"uid":"cap_lFQnQ_BcUDfVsQLZJupJu","slug":"api-x402node-dev-e7e33560","name":"Ethereum Wallet Behavior Classifier","description":"Classify Ethereum wallet by behavior pattern: exchange, MEV bot, whale, smart-money, fresh, contract, sybil, unknown. Returns primary_tag, confidence (0-1), signals (tx frequency, counterparty patterns, x402 payment history), metrics (nonce, eth_balance, is_contract). Combines onchain RPC analysis with Coinbase Bazaar payer behavior. Use for AI trading agent counterparty assessment, treasury monitoring, on-chain due diligence.","url":"https://api.x402node.dev/wallet/classify","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":{"address":{"type":"string","description":"EVM/chain address (required)"}}}},"additionalProperties":false}}},"responseSchema":null,"example":{"request":{"address":"0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD"},"response":{"meta":{"chain":"base","source":"x402node.dev","version":"v0.1"},"_hint":"x402 paid endpoints for AI agents — x402node.dev (utilities) · cn402.com (Chinese culture)","address":"0x3fc91a3afd70395cd496c647d5a6cc9d4b2b7fad","metrics":{"nonce":1,"x402_calls":0,"eth_balance":"0","is_contract":true},"signals":["has_bytecode"],"timestamp":"2026-06-18T05:21:02.944Z","confidence":1,"primary_tag":"contract"}},"exampleRequest":{"address":"0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD"},"tags":["x402"],"displayCostAmount":"0.05","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_sew2PQqVirSQIjhOa6CAl","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Classifies an Ethereum wallet address into behavioral categories (exchange, MEV bot, whale, smart-money, fresh, contract, sybil, unknown) with confidence score and onchain signals","exampleAgentPrompt":"Can you classify the Ethereum wallet 0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD and tell me whether it's an exchange, MEV bot, whale, or sybil — along with the confidence score and any onchain signals?","exampleUseCases":null,"resultDescription":"Returns a JSON object with primary_tag (one of: exchange, MEV bot, whale, smart-money, fresh, contract, sybil, unknown), a confidence value between 0 and 1, behavioral signals (tx frequency, counterparty patterns, x402 payment history), and raw metrics (nonce, ETH balance, is_contract flag).","failureModes":["Invalid or malformed Ethereum address returns an error","Address with insufficient onchain history may return tag 'unknown' with low confidence","RPC node downtime may cause timeout or 500 error","Non-Ethereum addresses (e.g. Bitcoin, Base) will not be classified correctly","Rate limiting or payment failure may block the request"],"whenToPreferThis":"Use this endpoint when you need behavioral profiling of an Ethereum mainnet wallet for counterparty assessment, treasury monitoring, or sybil detection — especially when you want a combined signal from onchain RPC data and Coinbase Bazaar x402 payment history. Prefer this over raw balance lookups when you need a human-readable classification label and confidence score rather than raw transaction data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T13:06:50.664Z","isFirstParty":false}