{"uid":"cap_AVWEmznw1B4hbtYF3Gf_a","slug":"phantom-api-token-balances-5f237277","name":"Phantom API — 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/plasma/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_vSmMNVLh6D9P59e1CypKb","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 token balances for a given wallet address, optionally filtered by specific contract addresses, across 57+ blockchain networks","exampleAgentPrompt":"What are the token balances for wallet 0xAbCd...1234? Also check specifically for the USDC contract at 0x...a0b8 and the USDT contract at 0x...dAC1.","exampleUseCases":[{"title":"DeFi portfolio token audit","prompt":"Show me all token balances held by wallet 0xAbCd...1234 across all contracts — I want a full breakdown of their on-chain holdings."},{"title":"Verify specific token holdings","prompt":"Check if wallet 0xUser...5678 holds any USDC or WETH — their contract addresses are 0xA0b8...eB48 and 0xC02a...6Cc2."},{"title":"Monitor whale wallet assets","prompt":"What tokens does wallet 0xWhale...9999 currently hold? I want to track their positions across these three token contracts: 0xAAA..., 0xBBB..., and 0xCCC...."}],"resultDescription":"Returns token balance data for the specified wallet owner, including balances for each token contract address provided. The response includes per-token holdings amounts, likely with token metadata such as symbol and decimals, enabling portfolio-level or contract-specific balance lookups.","failureModes":["Invalid or malformed wallet address returns an error or empty result","Non-existent contract addresses may return zero balances or errors","Network unavailability across the 57+ supported chains could result in partial data","Unsupported blockchain network for certain contract addresses","Rate limits or payment failures under x402 protocol returning 402 responses"],"whenToPreferThis":"Use this endpoint when you need fast, pay-per-call on-chain token balance lookups across a broad range of EVM-compatible or multi-chain networks without committing to a subscription. It is well-suited for agents that need ad-hoc balance checks for arbitrary wallets and token contracts, especially when supporting 57+ networks matters and low per-query cost ($0.01 USDC) is a priority over high-volume bulk pricing.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T18:56:47.893Z","isFirstParty":false,"canonicalSlug":"phantom-api-token-balances-0412c856"}