{"uid":"cap_wJiDKnX0N9swufiznN9rd","slug":"evm-chain-read-erc-20-balance-lookup-x402-d427f5bb","name":"EVM Chain Read – ERC-20 Balance Lookup (x402)","description":"Pay-per-call EVM reads on Base (8453) and Robinhood Chain (4663): native balance, block tip, ERC-20 meta/balance/allowance, is-contract. Public RPCs, no API key. x402 USDC on Base.","url":"https://chain-read.frcompanycheck.workers.dev/v1/%7Bchain%7D/erc20/balance/%7Btoken%7D/%7Bholder%7D?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"balance":0,"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_0C_tUvH6-YKK3iyOLxUGl","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":"Returns the ERC-20 token balance and decimals for a given holder address on a specified EVM chain (Base or Robinhood Chain), paid per-call via x402 USDC micropayment.","exampleAgentPrompt":"What is the USDC balance (contract 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48) held by wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base (chain 8453)?","exampleUseCases":[{"title":"DeFi portfolio balance check","prompt":"Check how many USDC tokens (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) are held by my wallet 0xAbCd1234...5678 on Base chain 8453."},{"title":"Agent treasury monitoring","prompt":"Look up the current balance of governance token 0xDeAdBeef...1111 for our DAO treasury address 0xFeed9090...2222 on Robinhood Chain 4663 so I can decide whether to rebalance."},{"title":"Allowance and balance pre-flight for swap","prompt":"Before I approve the swap, tell me the ERC-20 balance of token contract 0x4200...0006 for wallet 0x1234...ABCD on Base (chain 8453) and what its decimals are."}],"resultDescription":"A JSON object containing the raw token balance (as a number) and the token's decimals (e.g. 6 for USDC), enabling the caller to compute the human-readable balance by dividing balance by 10^decimals.","failureModes":["Invalid or non-existent token contract address returns zero balance or an error","Unsupported chain ID returns a 4xx error","Malformed wallet address causes a request error","x402 payment failure or insufficient USDC results in a 402 Payment Required response","Public RPC node downtime may cause intermittent 5xx errors"],"whenToPreferThis":"Choose this endpoint when you need a quick, pay-per-call ERC-20 balance read on Base (8453) or Robinhood Chain (4663) without setting up an API key or RPC subscription. Ideal for AI agents that need occasional on-chain balance checks at low cost ($0.002/call) and want to avoid managing API credentials.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T06:46:42.943Z","isFirstParty":false,"canonicalSlug":"evm-chain-read-erc-20-balance-lookup-x402-d427f5bb"}