{"uid":"cap_34zhcnWTxZCbQQvZXg0qL","slug":"evm-wallet-native-balance-lookup-c3dbc98f","name":"EVM Wallet Native Balance Lookup","description":"Pay-per-call EVM chain data for agents: wallet snapshots, ERC-20 token profiles, spot prices, gas markets, transaction decode, and ENS resolution across major EVM chains (base, ethereum, arbitrum, optimism, polygon). Deterministic JSON, no RPC keys or node infra needed.","url":"https://chain.cyberwarex.com/balance?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":["address"],"properties":{"chain":{"enum":["base","ethereum","arbitrum","optimism","polygon"],"type":"string","default":"base","description":"EVM chain to query."},"address":{"type":"string","pattern":"^0x[a-fA-F0-9]{40}$","description":"Wallet or contract address."}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"usd":{"type":["number","null"],"description":"null if the price feed is down"},"wei":{"type":"string"},"chain":{"type":"string"},"symbol":{"type":"string"},"address":{"type":"string"},"balance":{"type":"number"}}}}}}},"responseSchema":{"type":"json","example":{"usd":4102.77,"wei":"1284471203441290000","chain":"base","symbol":"ETH","address":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045","balance":1.284471203}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_eOLTz7NdV-P4h6BgjREqb","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the native token balance (ETH, MATIC, etc.) of any EVM wallet address in wei, decimal, symbol, and USD value on a specified chain","exampleAgentPrompt":"What's the current ETH balance of 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base, in both ETH and USD?","exampleUseCases":[{"title":"Portfolio balance snapshot","prompt":"Can you tell me how much ETH is sitting in wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum right now, and what that's worth in dollars?"},{"title":"DeFi agent treasury check","prompt":"Check the native token balance of our treasury address 0xAbCd1234567890abcdef1234567890abcdef1234 on Arbitrum — give me the amount in ETH and its current USD value."},{"title":"Polygon wallet funding verification","prompt":"I need to verify whether address 0x1234567890abcdef1234567890abcdef12345678 on Polygon has any MATIC balance before I trigger a transaction — can you look that up?"}],"resultDescription":"Returns a JSON object containing the wallet address queried, the chain, the native token symbol (e.g. ETH, MATIC), the balance as a decimal number, the balance in wei as a string, and the current USD value of that balance (null if price feed is unavailable).","failureModes":["Invalid address format (not matching 0x + 40 hex chars) returns a validation error","Unsupported chain name returns an enum validation error","Price feed outage causes usd field to return null while balance data remains valid","Address with zero balance returns balance: 0 and usd: 0 rather than an error","Network timeout or upstream RPC failure may return 5xx error"],"whenToPreferThis":"Choose this endpoint when you need a quick, keyless native token balance check for any EVM-compatible address across Base, Ethereum, Arbitrum, Optimism, or Polygon without managing RPC infrastructure. Ideal for agents that need deterministic JSON wallet snapshots with USD pricing included in a single call. Prefer over raw RPC calls when you lack node access or want normalized output with live USD conversion baked in.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-03T06:32:48.150Z","isFirstParty":false,"canonicalSlug":"evm-wallet-native-balance-lookup-c3dbc98f"}