{"uid":"cap_AVMlltYwcDEO9lRPLnR26","slug":"dopaminedesk-evm-balance-lookup-b70f9717","name":"DopamineDesk EVM Balance Lookup","description":"Read an address's native balance directly from Base, Ethereum, or Arbitrum at a selected block tag or height.","url":"https://ai-data-marketplace-1042299154756.us-central1.run.app/api/v1/evm_balance","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":{"block":{"type":"string","description":"Block tag or height; defaults to latest."},"chain":{"type":"string","description":"base, ethereum, or arbitrum; defaults to base."},"address":{"type":"string","description":"EVM wallet or contract address."}},"additionalProperties":true}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["success","network","asset","balance_wei","balance_formatted"],"properties":{"asset":{"type":"string"},"network":{"type":"string"},"success":{"type":"boolean"},"balance_wei":{"type":"string"},"balance_formatted":{"type":"string"}},"additionalProperties":true}}}}},"responseSchema":{"type":"json","example":{"asset":"ETH","network":"base","success":true,"balance_wei":"0","balance_formatted":"0.0"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_EGu_o-qOwaQOsTetoamL5","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the native token balance (ETH) of any EVM wallet or contract address on Base, Ethereum, or Arbitrum at a given block.","exampleAgentPrompt":"What's the current ETH balance of 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base — show me both the wei amount and the human-readable value.","exampleUseCases":[{"title":"Pre-trade wallet funding check","prompt":"Before I execute this swap, check whether my wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 has any ETH on Base — I need to know if it's funded."},{"title":"Smart contract ETH holdings audit","prompt":"How much ETH does the contract at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 hold on Ethereum right now? Give me both the wei and the formatted amount."},{"title":"Historical balance at specific block","prompt":"What was the ETH balance of wallet 0x71C7656EC7ab88b098defB751B7401B5f6d8976F on Arbitrum at block 150000000?"}],"resultDescription":"A JSON object containing: success (boolean), network (e.g. 'base'), asset (e.g. 'ETH'), balance_wei (raw balance as a string integer), and balance_formatted (human-readable decimal string). Example: {success: true, network: 'base', asset: 'ETH', balance_wei: '1500000000000000000', balance_formatted: '1.5'}.","failureModes":["Invalid or malformed EVM address returns an error or success:false","Unsupported chain value (anything other than base, ethereum, arbitrum) may return an error","Invalid block tag or height that doesn't exist on the specified chain","Network RPC downtime may cause timeouts or empty responses","Address with zero balance returns success:true with balance_wei '0' and balance_formatted '0.0'"],"whenToPreferThis":"Choose this endpoint when you need a quick, cheap ($0.001 USDC) on-chain native token balance check across Base, Ethereum, or Arbitrum without setting up your own RPC node. It is ideal for agents doing pre-flight funding checks, due diligence on wallets, or auditing contract holdings. It supports historical queries by block height, making it useful for point-in-time accounting.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:44:07.579Z","isFirstParty":false}