{"uid":"cap_pJtsCfZGE_Z5iCmfDxiBP","slug":"synapse-api-sonic-token-balances-c6b0dcb8","name":"Synapse API — Sonic Token Balances","description":"High-speed API suite for AI processing, web scraping, and smart data utilities across 57+ blockchain networks. Pay-per-call via x402.","url":"https://synapse-api-brown.vercel.app/api/sonic/token/balances","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_FUAK4e_JTL03A9-l9mMIq","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 on the Sonic blockchain network, optionally filtered by specific token contract addresses","exampleAgentPrompt":"Check the token balances for wallet 0xAbc123... on the Sonic network — include balances for these two contracts: 0xToken1... and 0xToken2....","exampleUseCases":[{"title":"DeFi portfolio snapshot on Sonic","prompt":"What tokens does wallet 0xAbc123... currently hold on the Sonic network? Show me all their token balances."},{"title":"Verify specific token holding","prompt":"Does wallet 0xDeFi456... hold any of the token at contract 0xToken789... on Sonic? I need to check their balance before approving a transfer."},{"title":"Multi-token airdrop eligibility check","prompt":"Check the Sonic token balances for wallet 0xUser999... across these three contract addresses — 0xContractA..., 0xContractB..., and 0xContractC... — so I can verify airdrop eligibility."}],"resultDescription":"Returns a list of token balances for the specified wallet address on the Sonic blockchain, showing each token's contract address and corresponding balance amount, optionally scoped to the provided contract addresses.","failureModes":["Invalid wallet address format returns an error","Non-existent or zero-balance wallet returns empty results","Invalid contract address in the array causes a lookup failure","Sonic network outage or RPC unavailability causes timeout","Wallet with no token activity returns empty balance list"],"whenToPreferThis":"Use this endpoint when you need to query token balances specifically on the Sonic blockchain network. Prefer this over generic multi-chain balance APIs when targeting Sonic specifically, or when you need pay-per-call pricing without subscription commitments via the x402 protocol.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:56:12.699Z","isFirstParty":false}