{"uid":"cap_X1oSbThQke1lYZy4aRVlf","slug":"phantom-api-monad-token-balances-043bb802","name":"Phantom API — Monad Token Balances","description":"Lightning-fast access to blockchain data, smart contract insights, and Web3 infrastructure across 57+ networks. Pay-per-call via x402.","url":"https://phantom-api-omega.vercel.app/api/monad/token/balances?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"owner":{"type":"string"},"contractAddresses":{"type":"array","items":{"type":"string"}}}},"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_UOegqfeUDIbg5RDZhXYrT","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":"Fetches ERC-20 and native token balances for a given wallet address on the Monad blockchain network, optionally filtered by contract addresses.","exampleAgentPrompt":"Check all token balances for the Monad wallet 0x1234abcd...5678, and also look up the specific balance for the USDC contract at 0xabc...def.","exampleUseCases":[{"title":"DeFi portfolio audit for Monad wallet","prompt":"Pull all token balances for the Monad wallet 0xDeAdBeEf...1234 so I can see everything it's holding on-chain."},{"title":"Check specific token holdings on Monad","prompt":"I need to know how much of the token at contract 0xToken...Addr this Monad wallet 0xMyWallet...5678 currently holds."},{"title":"Automated treasury balance monitoring","prompt":"Every hour, fetch the token balances for our treasury wallet 0xTreasury...9999 on Monad across these three contract addresses: 0xA..., 0xB..., 0xC..., and alert me if any drop below a threshold."}],"resultDescription":"Returns on-chain token balance data for the specified wallet owner on the Monad network, including balances for native tokens and any specified ERC-20 contract addresses — typically including token amounts, contract addresses, and potentially token metadata such as symbol and decimals.","failureModes":["Invalid or malformed wallet address returns an error or empty result","Non-existent contract address returns zero balance or error","Monad network downtime or congestion may cause delays or failures","Missing required 'owner' field results in a bad request error","Payment failure via x402 protocol blocks the call"],"whenToPreferThis":"Choose this endpoint when you specifically need token balance data on the Monad blockchain network. It supports targeted lookups by contract address, making it ideal for checking specific token holdings rather than scanning entire portfolios. Prefer this over generic multi-chain endpoints when Monad is your target network and you need fast, pay-per-call access without a subscription.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T18:56:19.957Z","isFirstParty":false,"canonicalSlug":"phantom-api-monad-token-balances-043bb802"}