{"uid":"cap_f7OCeMrEhQpCpB8a5CuPI","slug":"wallet-balance-lookup-ethereum-evm-579c1c53","name":"Wallet Balance Lookup (Ethereum/EVM)","description":"Pay-per-call stock, macro, on-chain, and crypto data over the x402 protocol. USDC on Base or Solana, no API keys, no subscriptions.","url":"https://x402-stock-indicators.vercel.app/wallet-balance/%7Baddress%7D","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"required":{"type":"string"},"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"as_of":"2026-07-31T03:43:30.000000","chain":"eth","address":"0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae","balance":1.28453901,"balance_wei":"1284539010000000000","native_symbol":"ETH"}},"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_5vYvvQnM2T9bUtirKgR3i","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":"Returns the current native ETH balance (and wei equivalent) for a given EVM wallet address, with chain and timestamp metadata.","exampleAgentPrompt":"What's the current ETH balance of wallet address 0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae on Ethereum?","exampleUseCases":[{"title":"Portfolio tracker balance check","prompt":"How much ETH is currently sitting in my wallet 0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae? I want the balance in both ETH and wei."},{"title":"Smart contract treasury monitoring","prompt":"Check the native ETH balance of the contract address 0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae — I need to make sure it still has enough ETH to cover gas."},{"title":"Wallet due diligence before transfer","prompt":"Before I send funds, can you verify how much ETH is at address 0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae right now?"}],"resultDescription":"A JSON object containing the wallet's current native token balance as a decimal (e.g. 1.2845 ETH), the raw balance in wei, the chain identifier (e.g. 'eth'), the native symbol (ETH), and an as_of timestamp for when the balance was recorded.","failureModes":["Invalid or malformed wallet address returns an error","Address with zero balance may return 0 but not an error","Network timeouts on RPC calls may cause delayed or failed responses","Non-EVM chain addresses (e.g. Solana) passed to this endpoint will likely fail","Payment failure via x402 protocol will block the call"],"whenToPreferThis":"Use this endpoint when you need a quick, no-subscription, pay-per-call ETH/EVM wallet balance lookup without setting up API keys. Ideal for agents that need to spot-check a wallet balance on demand and pay $0.01 USDC per call via x402. Prefer this over a full node RPC call when you want a simple REST interface and don't want to manage Web3 infrastructure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-12T12:30:02.717Z","isFirstParty":false}