{"uid":"cap_X97aBCJUzliOvUSm8ZOBN","slug":"synapse-api-token-balances-lookup-36ff112a","name":"Synapse API — Token Balances Lookup","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/stable/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_tKdFJQqwmSEaUyaxNOs1w","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 across multiple ERC-20 or similar contract addresses on supported blockchain networks.","exampleAgentPrompt":"Check the token balances for wallet address 0xAbC123...def and these contract addresses: 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 and 0xdAC17F958D2ee523a2206206994597C13D831ec7.","exampleUseCases":[{"title":"DeFi portfolio balance audit","prompt":"What are the current token balances for wallet 0x742d35Cc6634C0532925a3b844Bc454e4438f44e across these stablecoin contracts: 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 for USDC and 0xdAC17F958D2ee523a2206206994597C13D831ec7 for USDT?"},{"title":"Airdrop eligibility token check","prompt":"Before the airdrop snapshot, can you check how many governance tokens the wallet 0x1234567890abcdef1234567890abcdef12345678 holds for contract 0x6B175474E89094C44Da98b954EedeAC495271d0F?"},{"title":"Multi-wallet treasury monitoring","prompt":"Look up the token balances for our treasury wallet 0xDead...Beef across our three project token contracts so I can update the dashboard with current holdings."}],"resultDescription":"Returns a list of token balances for the specified owner wallet, one entry per contract address provided, including token amounts and likely token metadata such as symbol and decimals.","failureModes":["Invalid or malformed wallet address returns an error or empty result","Non-existent or incorrect contract addresses return zero balances or errors","Unsupported blockchain network not included in the 57+ supported chains may return an error","Rate limiting or payment failure if x402 micropayment is not properly handled","Network congestion or RPC unavailability on the target chain may cause timeout"],"whenToPreferThis":"Use this endpoint when you need to quickly look up token balances for a specific wallet across one or more ERC-20 or similar token contracts without setting up your own blockchain node. It is ideal for pay-per-call use cases where you don't want a subscription, need multi-contract batch queries in a single call, and require coverage across a wide range of 57+ blockchain networks.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:51:23.318Z","isFirstParty":false,"canonicalSlug":"synapse-api-token-balances-lookup-645eae9a"}