{"uid":"cap_LkPK-zyHtSiYRymxoxS2j","slug":"xerxes-ethereum-eth-balance-lookup-8ebb76e7","name":"Xerxes Ethereum ETH Balance Lookup","description":"Returns the Ether balance of a given address on the Ethereum mainnet, as of the latest block. This is a direct RPC call to eth_getBalance with the address parameter. Query: address (0x + 40 hex).","url":"https://ari001.tailb4ac3a.ts.net/v1/ventures/ethereum_rpc_api/eth_getbalance?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":["address"],"properties":{"address":{"type":"string","pattern":"^0x[a-fA-F0-9]{40}$","description":"0x + 40 hex"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["ok","service"],"properties":{"ok":{"type":"boolean"},"hex":{"type":["string","null"]},"chain":{"type":"string"},"error":{"type":"string","description":"present when ok is false"},"method":{"type":"string"},"result":{"type":"integer"},"service":{"type":"string"}}}}}}},"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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_HZFwnFCTHeG3JCK-v_eVT","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the Ether balance (in wei and hex) of a given Ethereum address as of the latest block via eth_getBalance RPC.","exampleAgentPrompt":"What's the current ETH balance of the Ethereum address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045?","exampleUseCases":[{"title":"Portfolio ETH balance check","prompt":"Can you look up how much ETH is currently held in the wallet 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B on Ethereum mainnet?"},{"title":"Smart contract ETH holdings audit","prompt":"I need to know the current ETH balance of the Uniswap v3 factory contract at 0x1F98431c8aD98523631AE4a59f267346ea31F984 — can you check that for me?"},{"title":"Pre-transaction balance verification","prompt":"Before I send a transaction, can you confirm the ETH balance on address 0x742d35Cc6634C0532925a3b844Bc454e4438f44e to make sure there's enough to cover gas?"}],"resultDescription":"Returns a JSON object with: ok (boolean success flag), hex (ETH balance as a hex string in wei), result (ETH balance as an integer in wei), chain (network identifier, e.g. 'ethereum'), method (RPC method name 'eth_getBalance'), and an error string if ok is false.","failureModes":["Invalid address format (not matching ^0x[a-fA-F0-9]{40}$) returns an error response","Address not found or zero-balance address returns 0x0 (not an error)","RPC node unavailability or timeout returns ok: false with an error message","Rate limiting or payment failure (x402) blocks the request"],"whenToPreferThis":"Use this endpoint when you need a live, mainnet ETH balance for a specific Ethereum address and want a minimal, direct RPC lookup without additional token data. Prefer this over ERC-20 balance endpoints when you need native Ether (not token) balance, and over block explorers when you need a programmatic, agent-callable response with structured JSON output including hex and integer wei values.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T01:23:18.783Z","isFirstParty":false,"canonicalSlug":"xerxes-ethereum-eth-balance-lookup-8ebb76e7"}