{"uid":"cap_0dYXH5zOVX0id1-QunRCj","slug":"agent-data-tools-erc-20-token-balance-on-arbitrum-28206aca","name":"Agent Data Tools: ERC-20 Token Balance on Arbitrum","description":"ERC-20 token balance of a wallet on Arbitrum One (USDC, USDT, WETH or any token, via balanceOf): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use arb_balance. Both inputs are 0x addresses (40 hex characters); no contract returns 404 and a non-ERC-20 contract 422, both uncharged.","url":"https://agent-data-tools.revmesh2074.workers.dev/arb/token-balance?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["token","address"],"properties":{"token":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$","examples":["0xaf88d065e77c8cC2239327C5EDb3A432268e5831"],"description":"Token: a ticker such as USDC, USDT, WETH or DAI, or the 0x ERC-20 contract address"},"address":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$","examples":["0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"],"description":"0x wallet address"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"raw":{"type":"string"},"chain":{"type":"string"},"token":{"type":"string"},"symbol":{"type":"string"},"address":{"type":"string"},"balance":{"type":"string"},"chainId":{"type":"number"},"decimals":{"type":"number"}}}}}}},"responseSchema":{"type":"json","example":{"raw":"2500000","chain":"Arbitrum One","token":"0xaf88d065e77c8cC2239327C5EDb3A432268e5831","symbol":"USDC","address":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045","balance":"2.5","chainId":42161,"decimals":6}},"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_Ky3VNVVtu4J6t77PcX_QC","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 ERC-20 token balance for a given wallet address on the Arbitrum One network","exampleAgentPrompt":"How much USDC (contract 0xaf88d065e77c8cC2239327C5EDb3A432268e5831) does the wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 hold on Arbitrum One?","exampleUseCases":[{"title":"DeFi portfolio balance check","prompt":"What's my USDC balance on Arbitrum for wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045? The USDC contract on Arbitrum is 0xaf88d065e77c8cC2239327C5EDb3A432268e5831."},{"title":"Smart contract fund verification","prompt":"Can you confirm how many ARB tokens (contract 0x912CE59144191C1204E64559FE8253a0e49E6548) are sitting in the multisig wallet 0x1234567890abcdef1234567890abcdef12345678 on Arbitrum One?"},{"title":"Automated agent treasury monitoring","prompt":"Check the WETH balance on Arbitrum One for our treasury wallet 0xAbCd1234567890EfAbCd1234567890EfAbCd1234 — the WETH contract is 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1."}],"resultDescription":"A JSON object containing the human-readable token balance (e.g. '2.5'), the raw on-chain balance string, the token symbol, decimal count, the wallet address queried, the token contract address, the chain name ('Arbitrum One'), and the numeric chain ID (42161).","failureModes":["Invalid or malformed token contract address returns an error or zero balance","Invalid or malformed wallet address returns an error","Token contract does not exist on Arbitrum One — returns error or empty result","Network or RPC congestion may cause timeouts","Payment failure (x402) — call is not charged if the payment step fails"],"whenToPreferThis":"Choose this endpoint when you need to look up an ERC-20 token balance specifically on Arbitrum One without setting up an API key or account. It is ideal for lightweight, pay-per-call agent workflows that need on-chain Arbitrum data at minimal cost ($0.001 per call). Prefer this over general blockchain RPC calls when you want a clean, parsed JSON response with human-readable balance and token metadata already included.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-19T12:44:41.670Z","isFirstParty":false,"canonicalSlug":"agent-data-tools-erc-20-token-balance-on-arbitrum-28206aca"}