{"uid":"cap_jGzaStm4xikJLD-pQIw1X","slug":"evm-chain-balance-lookup-762a8be0","name":"EVM Chain Balance Lookup","description":"Pay-per-call website uptime/latency/TLS checks and fetch-to-Markdown, measured from Hub Europe (Germany). USDC on Base via x402. No account or API key.","url":"https://tpgoose.ccwu.cc:8443/v1/chain/balance?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":["chain","address"],"properties":{"chain":{"type":"string","example":"base","description":"base or ethereum"},"address":{"type":"string","example":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045","description":"0x EVM address"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"block":36000000,"chain":"base","nonce":5,"address":"0x...","balance_eth":"0.0123","balance_wei":"12300000000000000"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_AiDqNn7IA50IADrJAOrsN","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up the ETH/token balance and nonce for a given EVM address on Base or Ethereum, returning balance in both ETH and wei units.","exampleAgentPrompt":"What's the current ETH balance of wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base? Give me the balance in both ETH and wei, along with the nonce.","exampleUseCases":[{"title":"DeFi bot wallet balance check","prompt":"Check how much ETH is in the wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base right now — I need the balance in ETH and the current nonce before I send a transaction."},{"title":"Portfolio tracker balance refresh","prompt":"Look up the on-chain ETH balance for address 0xAbCd1234567890abcdef1234567890abcdef1234 on Ethereum and tell me the balance in both ETH and wei."},{"title":"Wallet activity monitoring","prompt":"I want to know the nonce and ETH balance for 0x1234567890abcdef1234567890abcdef12345678 on Base — I'm trying to figure out if this wallet has sent any transactions recently."}],"resultDescription":"Returns a JSON object containing: the queried address, chain name, current block number, account nonce, ETH balance as a decimal string (balance_eth), and raw balance in wei (balance_wei).","failureModes":["Invalid or malformed 0x address returns an error","Unsupported chain name (not 'base' or 'ethereum') returns an error","Missing required query parameters (chain or address) returns a 400-level error","Temporary RPC node unavailability may cause timeouts or 5xx errors","Payment failure via x402 results in 402 Payment Required response"],"whenToPreferThis":"Use this endpoint when you need a quick, no-account-required lookup of an EVM wallet's native ETH balance and nonce on Base or Ethereum, paid per-call with USDC. Prefer this over hosted RPC services when you want zero setup, or when you need a lightweight balance check without maintaining RPC subscriptions or API keys.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T12:39:16.761Z","isFirstParty":false,"canonicalSlug":"evm-chain-balance-lookup-762a8be0"}