{"uid":"cap_LuS2yykZFFOu3sogoTWr3","slug":"phantom-api-token-balances-lookup-9df88f92","name":"Phantom API — Token Balances Lookup","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/adi/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_k0SX3sMgrzixiTLQZKzZA","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 other token balances for a given wallet address, optionally filtered by specific contract addresses, across 57+ blockchain networks.","exampleAgentPrompt":"Check the token balances for wallet address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 — I want to see all ERC-20 tokens it holds, especially USDC and WETH.","exampleUseCases":[{"title":"DeFi portfolio snapshot for a wallet","prompt":"Pull up all the token balances for 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 so I can see what tokens they're holding right now."},{"title":"Check specific token holdings before a trade","prompt":"Before I execute this swap, check whether wallet 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B has enough USDC — the contract address is 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48."},{"title":"Monitor whale wallet token positions","prompt":"Look up the token balances for wallet 0x3f5CE5FBFe3E9af3971dD833D26bA9b5C936f0bE and filter for just these contracts: WETH, DAI, and LINK, so I can track their positions."}],"resultDescription":"Returns a list of token balances associated with the specified owner wallet address, including token contract addresses, token amounts, and potentially token symbols/decimals. When specific contract addresses are provided, results are filtered to those tokens only.","failureModes":["Invalid or malformed wallet address returns an error","Unsupported network or chain not among the 57+ covered networks","No token balances found returns empty array","Payment failure via x402 protocol blocks the request","Rate limiting or network congestion causes timeout","Invalid contract address format in the contractAddresses array"],"whenToPreferThis":"Choose this endpoint when you need fast, pay-per-call on-chain token balance lookups across a wide range of EVM-compatible and other networks without committing to a subscription. It is ideal for AI agents that need spot checks of wallet holdings, portfolio snapshots, or pre-trade balance verification at minimal cost ($0.01 per call). Prefer alternatives like Alchemy or Moralis if you need high-volume batch lookups with predictable monthly pricing.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:45:31.807Z","isFirstParty":false,"canonicalSlug":"phantom-api-token-balances-lookup-19145b1d"}