{"uid":"cap_SUmjBVHA9lzNbcWPuEGnI","slug":"erc-20-token-balance-lookup-base-ethereum-e4482fef","name":"ERC-20 Token Balance Lookup (Base/Ethereum)","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://cyberhill.ccwu.cc:8443/v1/chain/erc20-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","token","address"],"properties":{"chain":{"type":"string","example":"base","description":"base or ethereum"},"token":{"type":"string","example":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","description":"ERC-20 contract address"},"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":{"raw":"12500000","symbol":"USDC","balance":"12.5","decimals":6}},"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_qiuMW72WGZk_AvgpJ3od8","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":"Fetches the current ERC-20 token balance for a given wallet address on Base or Ethereum, returning raw, decimal-adjusted, and symbol data.","exampleAgentPrompt":"What's the USDC balance for wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base? The USDC contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.","exampleUseCases":[{"title":"Verify wallet has enough USDC","prompt":"Before I send that payment, check if 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 has at least 100 USDC on Base — the USDC contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913."},{"title":"Monitor DeFi treasury token balance","prompt":"What's the current DAI balance of our treasury wallet 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B on Ethereum? DAI contract is 0x6B175474E89094C44Da98b954EedeAC495271d0F."},{"title":"Audit airdrop recipient holdings","prompt":"Check how many tokens from contract 0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984 the address 0x742d35Cc6634C0532925a3b844Bc454e4438f44e currently holds on Ethereum."}],"resultDescription":"Returns a JSON object with the wallet's token balance as a human-readable decimal string (e.g. '12.5'), the raw integer balance, the token symbol, and the number of decimals used by the contract.","failureModes":["Invalid or non-checksummed wallet address returns an error","Unsupported chain value (anything other than 'base' or 'ethereum') causes a bad request","Non-ERC-20 contract address may return zero or an error","Network congestion or RPC issues may cause timeout or stale data","Payment failure via x402 if USDC funds are insufficient"],"whenToPreferThis":"Use this endpoint when you need a quick, no-account-required on-chain ERC-20 balance lookup for Base or Ethereum without setting up an RPC node or API key. Ideal for lightweight agent workflows that need to verify token holdings before a transaction or decision.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T12:32:40.925Z","isFirstParty":false,"canonicalSlug":"erc-20-token-balance-lookup-base-ethereum-e4482fef"}