{"uid":"cap_XA34RXUN9EKdVU4Y4AUUG","slug":"agent-data-tools-base-wallet-token-balance-lookup-ad6dee08","name":"Agent Data Tools – Base Wallet & Token Balance Lookup","description":"Pay-per-call tools for AI agents: web page text extraction and summaries, screenshots, image generation, speech-to-text, image description, domain and email-auth intelligence, and live Base token and wallet lookups. No account or API key; pay per request in USDC on Base via x402.","url":"https://agent-data-tools.revmesh2074.workers.dev/wallet?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":{"tokens":{"type":"string","description":"Optional comma-separated extra ERC-20 addresses to check (max 20)"},"address":{"type":"string","description":"Wallet or contract address on Base (0x...)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"eth":{"wei":"286016330790748434767802","formatted":"286016.330790748434767802"},"type":"contract","chain":"base","tokens":[{"symbol":"USDC","address":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","balance":"167551481","decimals":6,"balanceFormatted":"167.551481"}],"address":"0x4200000000000000000000000000000000000006","transactionCount":0}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_TSy-ioE_uWlE0bdQzBTYx","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up ETH balance, token balances, and account type for any wallet or contract address on the Base blockchain","exampleAgentPrompt":"Can you check the ETH and USDC balances for the Base wallet at 0x4200000000000000000000000000000000000006 and tell me if it's a regular wallet or a contract?","exampleUseCases":[{"title":"DeFi portfolio balance check","prompt":"What's the current ETH balance and all token holdings for Base wallet 0xAbC123...def456? I also want to know if it's a smart contract or an EOA."},{"title":"Pre-payment wallet verification","prompt":"Before I send funds, can you verify how much ETH and USDC the Base address 0x1234567890abcdef1234567890abcdef12345678 currently holds?"},{"title":"Token-specific balance audit","prompt":"Check the USDC and DAI balances on Base for address 0xDeadBeef00000000000000000000000000000001 — I need the exact formatted amounts."}],"resultDescription":"A JSON object containing the ETH balance in both raw wei and human-readable format, the account type (wallet or contract), the Base chain identifier, the transaction count, and an array of ERC-20 token balances each with symbol, contract address, raw balance, decimals, and formatted balance.","failureModes":["Invalid or malformed address returns an error","Address not found on Base returns empty or zero balances","Requesting more than 20 extra ERC-20 tokens in one call may be rejected","Payment failure (insufficient USDC or x402 protocol error) blocks the request","Network or provider downtime results in timeout or 5xx error"],"whenToPreferThis":"Choose this endpoint when you need a quick, no-account-required lookup of ETH and ERC-20 token balances on the Base network for any wallet or contract address. It is ideal for AI agents that need on-chain balance data without setting up a full node or managing API keys — paying only $0.005 USDC per call via x402. Prefer it over generic blockchain explorers when you want structured JSON output ready for downstream processing.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T12:46:13.427Z","isFirstParty":false,"canonicalSlug":"agent-data-tools-base-wallet-token-balance-lookup-ad6dee08"}