{"uid":"cap_gnU1NX5Ti13SSJXIBGZJE","slug":"coin-railz-multi-chain-wallet-balance-13fb1904","name":"Coin Railz Multi-Chain Wallet Balance","description":"Query wallet balances across 7+ EVM chains in a single API call","url":"https://coinrailz.com/x402/service/multi-chain-balance","method":"POST","headers":{},"bodySchema":{"type":"object","required":["walletAddress"],"properties":{"chains":{"type":"array","description":"Chains to check (optional)"},"includeTokens":{"type":"boolean","description":"Include token balances (optional)"},"walletAddress":{"type":"string","description":"Wallet address to check"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.5","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":"$0.5/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_eRIG7rD7AuOEg9W7wsZYV","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.5","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Query native and token balances for a wallet address across 7+ EVM-compatible blockchain networks in a single API call","exampleAgentPrompt":"Can you check the wallet balance for 0xAbC123...def456 across all available EVM chains and include token balances too?","exampleUseCases":null,"resultDescription":"Returns native coin and optionally ERC-20 token balances for the specified wallet address, broken down by each queried EVM chain (e.g. Ethereum, Base, Polygon, Arbitrum, etc.), enabling a full multichain portfolio snapshot in one response.","failureModes":["Invalid or malformed wallet address returns a validation error","Unsupported chain identifier in the chains array results in an error or that chain being skipped","Network timeout or RPC node unavailability for a specific chain may return partial results","Rate limiting or payment failure (x402) prevents the call from completing","Empty wallet with no balances returns zero values rather than an error"],"whenToPreferThis":"Use this endpoint when you need to aggregate wallet balances across multiple EVM chains in a single call rather than making separate per-chain RPC calls. Ideal for portfolio dashboards, pre-transaction fund checks, agent treasury management, or any flow requiring a multichain balance snapshot without running individual node queries per network.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:45:06.033Z","isFirstParty":false}