{"uid":"cap_KQhUZ0CQgwx2qZpDEGVGZ","slug":"chain-native-balance-56645d2d","name":"chain-native-balance","description":"Native coin balance (ETH/POL/BNB) of any address, read live from the chain. Default chain Base; prefix another: ethereum:, arbitrum:, optimism:, polygon:, bsc:. $0.01 per call.","url":"https://chain.intel.rallylive.ca/chain/balance?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_vt-S5z3wIdy_-S2K_O1wt","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the live native coin balance (ETH, POL, BNB, etc.) of any wallet or contract address on Base and other EVM chains.","exampleAgentPrompt":"What's the live ETH balance of wallet address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base right now?","exampleUseCases":[{"title":"DeFi portfolio native balance check","prompt":"Can you check the current ETH balance of 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base — I want to know if they have enough to cover gas fees?"},{"title":"Cross-chain balance monitoring","prompt":"Look up the native balance for address 0xAbCd1234...5678 on both Arbitrum and Optimism — I want to see which chain they're most active on."},{"title":"Smart contract ETH holdings check","prompt":"How much ETH is currently held by this contract address 0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984 on Ethereum mainnet?"}],"resultDescription":"Returns the live native coin balance of the queried address on the specified EVM chain, expressed in the chain's native currency (e.g. ETH on Ethereum/Base/Arbitrum/Optimism, POL on Polygon, BNB on BSC). Data is read directly from the chain in real time.","failureModes":["Invalid or malformed address format returns an error","Unsupported chain prefix returns an error or falls back to Base","Address with no activity may return a zero balance","Network congestion or RPC issues may cause delayed or failed reads","Payment of $0.01 USDC required per call; insufficient payment returns a 402 error"],"whenToPreferThis":"Use this endpoint when you need a real-time, live on-chain native coin balance (ETH/POL/BNB) for any EVM-compatible address across Base, Ethereum, Arbitrum, Optimism, Polygon, or BSC. Prefer this over general wallet-profile endpoints when you only need the raw native balance and not a full wallet analysis. It is the lightest and cheapest call for a single balance lookup at $0.01 per call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T12:42:26.935Z","isFirstParty":false,"canonicalSlug":"chain-native-balance-56645d2d"}