{"uid":"cap_y_ulFrmnaFhttkCzqKbfC","slug":"avedaris-base-wallet-lookup-35ee2d0f","name":"AveDaris Base Wallet Lookup","description":"Look up a Base address: ETH balance, transaction count, contract or wallet, and ERC-20 balances (USDC by default, up to 5 tokens), read live from Base RPC. $0.003 USDC per call on Base.","url":"https://api.avedaris.com/v1/paid/base-wallet-lookup?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"tokens":{"type":"array","items":{"type":"string","maxLength":42,"minLength":42},"maxItems":5,"minItems":1,"description":"Optional ERC-20 contract addresses on Base, up to 5. Defaults to USDC."},"address":{"type":"string","maxLength":42,"minLength":42,"description":"Base address to look up: 0x followed by 40 hex characters."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_atf9pGpfZMFPwOIz4tn9j","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up a Base (L2) wallet address to return ETH balance, transaction count, wallet/contract type, and ERC-20 token balances (USDC by default, up to 5 tokens), read live from Base RPC.","exampleAgentPrompt":"Can you look up the Base wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 and tell me its ETH balance, transaction count, whether it's a contract or regular wallet, and how much USDC it holds?","exampleUseCases":[{"title":"Verify DeFi user wallet activity","prompt":"Check the Base address 0xAbCd1234567890AbCd1234567890AbCd12345678 — I want to know how much ETH it has, how many transactions it's made, and whether it's a smart contract or a regular wallet."},{"title":"Confirm USDC payment received","prompt":"Has the payment landed yet? Look up Base wallet 0x1234567890abcdef1234567890abcdef12345678 and tell me its current USDC balance."},{"title":"Multi-token portfolio snapshot","prompt":"Give me a full snapshot of the Base wallet 0xDeAdBeEf1234567890DeAdBeEf1234567890DeAd — ETH balance plus balances for these ERC-20 tokens: 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48, 0x4200000000000000000000000000000000000006, and 0x50c5725949A6F0c72E6C4a641F24049A917DB0Cb."}],"resultDescription":"Returns the ETH balance (in wei and ether), total transaction count, wallet classification (EOA or contract), and balances for up to 5 specified ERC-20 tokens (defaulting to USDC) for the given Base address, read live from Base RPC at the time of call.","failureModes":["Invalid address format (not 42-character 0x hex string) returns a validation error","Invalid or non-Base ERC-20 contract address in the tokens array returns an error or zero balance","RPC node unavailability causes a timeout or 503 error","Address with no on-chain activity returns zero balances and zero transaction count (not an error)","More than 5 token addresses in the tokens array is rejected","Payment failure or insufficient USDC for the $0.003 fee causes a 402 error"],"whenToPreferThis":"Use this endpoint when you need live, real-time on-chain data for a specific Base (L2) wallet address — especially when you need ETH balance, transaction count, contract/EOA classification, and ERC-20 token balances in a single call. Prefer this over Ethereum mainnet lookups when operating on Base, and over block explorer scraping when you need structured, agent-friendly JSON output with predictable schema.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T12:36:21.046Z","isFirstParty":false,"canonicalSlug":"avedaris-base-wallet-lookup-35ee2d0f"}