{"uid":"cap_H0OcSjOUsySaL-Rjq_91K","slug":"evm-native-balance-lookup-bfd41874","name":"EVM Native Balance Lookup","description":"Global current weather, hourly forecasts, foreign-exchange rates, EVM reads, and deterministic utilities for AI agents. Pay per call with MPP or x402; no API key.","url":"https://built-with-productos-xszv.vercel.app/v1/native-balance?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":["address"],"properties":{"address":{"type":"string","pattern":"^0x[a-fA-F0-9]{40}$"},"network":{"enum":["ethereum","base","arbitrum","polygon"],"type":"string"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"address":"0x0000000000000000000000000000000000000000","network":"base","balance_wei":"0","balance_native":"0"}},"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_NoXaBhrMa0Hl3bbmEe2pT","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 (in wei and human-readable form) for an EVM wallet address on Ethereum, Base, Arbitrum, or Polygon","exampleAgentPrompt":"What's the current native ETH balance for wallet address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base?","exampleUseCases":[{"title":"DeFi portfolio balance check","prompt":"Can you tell me the current native token balance for 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum? I want to know how much ETH they're holding on-chain."},{"title":"Wallet funding verification","prompt":"Before I trigger my contract interaction, check if 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B has enough native balance on Arbitrum to cover gas — what does it show?"},{"title":"Cross-chain balance monitoring","prompt":"Check the native MATIC balance on Polygon for address 0x1234567890abcdef1234567890abcdef12345678 and give me both the raw wei amount and the human-readable value."}],"resultDescription":"A JSON object containing the queried wallet address, the network name, the balance expressed in wei (as a string to avoid precision loss), and the balance in native token units as a decimal number.","failureModes":["Invalid address format (not a 0x-prefixed 40-character hex string) returns a validation error","Unsupported network value (outside ethereum/base/arbitrum/polygon) returns an enum error","Network RPC unavailability may cause timeout or 503 errors","Payment failure via x402/MPP returns 402 Payment Required before the balance is returned","Zero-balance wallets return successfully with balance_wei of '0'"],"whenToPreferThis":"Use this endpoint when you need a lightweight, pay-per-call on-chain native balance read across Ethereum, Base, Arbitrum, or Polygon without setting up an RPC provider or managing API keys. Ideal for AI agents that need sporadic, trustless balance checks without infrastructure overhead. Prefer this over full node RPC calls when cost predictability and simplicity matter.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T04:43:14.257Z","isFirstParty":false,"canonicalSlug":"evm-native-balance-lookup-bfd41874"}