{"uid":"cap_o0CcqWR0Qjp90HOO-Jl__","slug":"evm-address-type-classifier-a2b5f623","name":"EVM Address Type Classifier","description":"Address type check: EOA vs contract, EIP-7702 delegated EOA, EIP-1167 minimal proxy, EIP-1967 proxy implementation/admin/beacon, code size, balance, nonce (public RPC). 0.01 USDC/call on Base.","url":"https://task-radar-x402.vercel.app/api/address-type?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":{"const":"http"},"method":{"const":"GET"},"queryParams":{"type":"object","properties":{"chain":{"type":"string","description":"ethereum|base|arbitrum|optimism|polygon|bsc (default ethereum)"},"address":{"type":"string","description":"0x address"}}}}}}},"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_kQDGzD6AQtujRgUa6vUVV","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":"Classifies an EVM address as EOA, contract, EIP-7702 delegated EOA, EIP-1167 minimal proxy, or EIP-1967 proxy, and returns code size, balance, and nonce","exampleAgentPrompt":"Can you check whether 0x1234567890abcdef1234567890abcdef12345678 on Base is a regular wallet or a smart contract, and if it's a proxy tell me the implementation address?","exampleUseCases":[{"title":"Identify proxy implementation before interaction","prompt":"Before I call this contract, can you check if 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum is a proxy and what implementation address it points to?"},{"title":"Security audit of suspected bot wallet","prompt":"I need to know if address 0xdAC17F958D2ee523a2206206994597C13D831ec7 on Ethereum is actually an EOA or some kind of contract — also tell me its nonce and balance."},{"title":"Verify EIP-7702 delegation on Base","prompt":"Check whether 0xBe0Eb53F46cd790Cd13851d5EFf43D12404d33E8 on Base is a delegated EOA under EIP-7702 and what its code size looks like."}],"resultDescription":"Returns the address classification (EOA, contract, EIP-7702 delegated EOA, EIP-1167 minimal proxy, EIP-1967 proxy), proxy-related metadata (implementation address, admin address, beacon address), plus on-chain data including code size in bytes, native token balance, and nonce — all fetched live from public RPC.","failureModes":["Invalid or malformed address returns an error","Unsupported chain value returns an error","RPC node unavailability causes timeout or 500 error","Address with no on-chain activity returns minimal data (zero balance, zero nonce, zero code size)","Rate limiting or payment failure returns 402 or 429"],"whenToPreferThis":"Use this endpoint when you need to programmatically classify an EVM address before interacting with it — especially for security checks, proxy pattern detection, or distinguishing EOAs from contracts across multiple chains. It is superior to raw RPC calls because it bundles proxy pattern detection (EIP-1167, EIP-1967, EIP-7702) with basic account data in a single call, saving multiple RPC round-trips.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:40:01.994Z","isFirstParty":false,"canonicalSlug":"evm-address-type-classifier-a2b5f623"}