{"uid":"cap_8tDB4QPwByHCqJJ2CGtrc","slug":"multichain-rpc-wallet-balance-623d30db","name":"Multichain RPC - Wallet Balance","description":"Cheap, factual EVM chain lookups priced per call in USDC. Base, Polygon, Arbitrum, Optimism and Ethereum.","url":"https://multichain-rpc.clankerceo.workers.dev/wallet-balance","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","queryParams"],"properties":{"type":{"enum":["http"],"type":"string"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{"chain":{"type":"string"},"address":{"type":"string"}}}}},"output":{"type":"object","required":["type"],"properties":{"type":{"enum":["json"],"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"chain":"base","native":{"wei":"1000000","amount":"0.000001","symbol":"ETH"},"address":"0x…"}},"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_gvYS3AIqLZdBzzg-AYnHr","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 native coin and ERC-20 token balances for any wallet address on Base, Polygon, Arbitrum, Optimism, or Ethereum, in both raw and human-readable decimal formats.","exampleAgentPrompt":"What's the ETH balance of wallet 0xAbCd1234...5678 on Base — give me both the raw wei amount and the human-readable decimal?","exampleUseCases":[{"title":"DeFi portfolio balance tracker","prompt":"Check the ETH balance on Base for wallet 0xAbCd1234...5678 and tell me both the raw wei and the decimal amount so I can track my portfolio."},{"title":"Pre-transfer funds verification","prompt":"Before I send a transaction, can you confirm how much MATIC is in wallet 0x9876...FeDc on Polygon right now in a human-readable amount?"},{"title":"Cross-chain asset audit","prompt":"I need to audit a wallet — look up the native coin balance for 0x1111...AAAA on Arbitrum and tell me the symbol and decimal balance."}],"resultDescription":"A JSON object containing the queried chain name, the wallet address, and a native balance object with the raw wei amount, human-readable decimal amount, and the coin symbol (e.g. ETH, MATIC). The response is returned in a single call, combining raw and formatted amounts for immediate use.","failureModes":["Invalid or malformed wallet address returns an error or empty result","Unsupported chain identifier returns an error — only Base, Polygon, Arbitrum, Optimism, and Ethereum are supported","Network timeout or RPC node unavailability may result in a failed response","Missing required query parameters (chain or address) causes a 400-level error","Rate limiting or payment failure (x402) blocks the response"],"whenToPreferThis":"Choose this endpoint when you need a fast, single-call balance lookup for a wallet on any of the five supported EVM chains (Base, Polygon, Arbitrum, Optimism, Ethereum) and want both raw wei and human-readable decimal in one response. It is ideal for agents that need on-chain balance data without setting up their own RPC infrastructure, and especially useful when cost predictability matters ($0.002 USDC per call). Prefer alternatives if you need historical balance data, multiple wallets in batch, or chains outside the supported five.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:40:25.943Z","isFirstParty":false}