{"uid":"cap_E1H2Ay2CkJUxkxefP6JpH","slug":"phantom-api-sei-token-balances-98ffafb2","name":"Phantom API – SEI 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/sei/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_Iqgcvn99RGY_fAE_X_GiV","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":"Returns token balances for a given wallet address on the SEI blockchain, optionally filtered by specific contract addresses.","exampleAgentPrompt":"What token balances does the SEI wallet sei1abc...xyz hold? Only show me balances for these contracts: 0x1234... and 0x5678....","exampleUseCases":[{"title":"DeFi portfolio snapshot for SEI wallet","prompt":"Can you pull all the token balances for my SEI wallet sei1qwertyuiop1234567890 so I can see what I'm holding on-chain?"},{"title":"Check specific token holdings before a trade","prompt":"Before I swap, check if the SEI wallet sei1abcdef123456 holds any of these tokens: contract 0xAAA111 and contract 0xBBB222 — and how much of each."},{"title":"Monitor user wallet for token presence","prompt":"I need to verify whether the SEI address sei1xyz987654321 has a non-zero balance for the token at contract 0xDEF456 — can you check that on-chain?"}],"resultDescription":"A list of token balances associated with the specified SEI wallet address, including token identifiers and amounts held. If contract addresses are provided, results are filtered to only those tokens.","failureModes":["Invalid or malformed SEI wallet address returns an error or empty result","Unknown or non-existent contract address returns zero balance or error","Network congestion or RPC node downtime causes timeout","Payment failure via x402 protocol blocks the request","Empty array returned if wallet holds no tokens matching the filter"],"whenToPreferThis":"Use this endpoint when you need fast, pay-per-call on-chain token balance lookups specifically on the SEI blockchain. Prefer this over general-purpose RPC calls when you want a simple JSON interface without setting up your own node, and when spot-checking balances for one or a handful of contract addresses at a time.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T18:56:47.085Z","isFirstParty":false,"canonicalSlug":"phantom-api-sei-token-balances-98ffafb2"}