{"uid":"cap_sVx2JoVnIkSG4U4uH_ap1","slug":"x402-valkyry-fr-wallet-balance-0b78495d","name":"x402.valkyry.fr Wallet Balance","description":"On-chain native + ERC-20 token balances for any EVM address across Ethereum, Base, Arbitrum, Optimism and Polygon. For wallet-tracking and DeFi agents.","url":"https://x402.valkyry.fr/wallet-balance?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"tokens":{"type":"array","items":{"type":"string"},"description":"Optional ERC-20 token addresses to include"},"address":{"type":"string","description":"EVM address (0x…)"},"network":{"type":"string","description":"ethereum | base | arbitrum | optimism | polygon (default ethereum)"}}},"responseSchema":{"type":"json","example":{"native":{"symbol":"ETH","formatted":"1.23"},"tokens":[],"network":"eip155:1"}},"example":{"request":{"tokens":["0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"],"address":"0x1234567890123456789012345678901234567890","network":"ethereum"},"response":{"native":{"wei":"17373447080759505555","symbol":"ETH","formatted":"17.373447080759505555"},"tokens":[{"token":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","symbol":"USDC","balance":"614170","formatted":"0.61417"}],"address":"0x1234567890123456789012345678901234567890","network":"eip155:1","fetchedAt":"2026-07-01T05:24:40.990Z"}},"exampleRequest":{"tokens":["0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"],"address":"0x1234567890123456789012345678901234567890","network":"ethereum"},"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_0qzBIAh4lryKYrC0bP2BS","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 native token and ERC-20 token balances for a given EVM wallet address on a specified network","exampleAgentPrompt":"What's the current ETH balance and USDC token balance for wallet 0xAbC123...def on the Base network?","exampleUseCases":null,"resultDescription":"A JSON object with a 'native' field containing the native token symbol and formatted balance (e.g. ETH: 1.23), a 'tokens' array with any requested ERC-20 token balances, and the network identifier (e.g. eip155:1).","failureModes":["Invalid or malformed EVM address returns an error","Unsupported network name causes a bad request response","Invalid ERC-20 token contract address may return empty or error","Payment failure via x402 protocol results in 402 response before processing","Network RPC unavailability may cause timeout or error"],"whenToPreferThis":"Use this endpoint when you need to check native or ERC-20 token balances for an EVM wallet address across major networks (Ethereum, Base, Arbitrum, Optimism, Polygon) and want a pay-per-call micro-API with no subscription required. Prefer over self-hosted RPC calls when you lack a node provider, or when building lightweight agent workflows.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":2,"lastUsedAt":"2026-07-18T00:33:38.738Z","lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T18:39:50.894Z","isFirstParty":false,"canonicalSlug":"x402-valkyry-fr-wallet-balance-0b78495d"}