{"uid":"cap_n5s64vbKWFyFGqfyY0Qrz","slug":"coin-railz-multi-chain-wallet-balance-94163c17","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/multi-chain-balance","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"query":{"type":"string","description":"Query parameter for the service"}}},"responseSchema":{"type":"application/json","format":"json","example":{"result":"Service executed successfully","service":"multi-chain-balance","success":true,"timestamp":"2026-02-07T01:40:54.723Z"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.5","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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_helh65IvrNDlGt-ET7JqK","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":"Queries wallet balances across 7+ EVM-compatible blockchains in a single API call","exampleAgentPrompt":"What are the token balances for wallet 0x742d35Cc6634C0532925a3b8D4C9C6e9f1234567 across all supported EVM chains — I want to see everything it holds on Ethereum, Arbitrum, Polygon, Base, and any other chains you can check?","exampleUseCases":null,"resultDescription":"A JSON object indicating success, the service name, a timestamp, and the aggregated wallet balance results across 7+ EVM chains for the queried address","failureModes":["Invalid or malformed wallet address returns an error response","Unsupported chain identifier causes partial or failed lookup","Payment not fulfilled via x402 protocol results in 402 Payment Required","Rate limiting or quota exceeded returns an appropriate error","Network timeouts for specific chains may result in incomplete multi-chain data"],"whenToPreferThis":"Use this endpoint when you need to aggregate a wallet's token holdings across multiple EVM chains in a single call, avoiding the need to query each chain individually. Ideal for DeFi dashboards, portfolio trackers, and AI agents that need a holistic view of an address's on-chain assets.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:33:46.841Z","isFirstParty":false}