{"uid":"cap_yXYUILnBDrtMCczlRiqRW","slug":"synapse-api-humanity-token-balances-50bfb9f2","name":"Synapse API — Humanity 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/humanity/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_ZYlV1TwQtmHDN2FIxJ22v","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 specified ERC-20 contract addresses on blockchain networks","exampleAgentPrompt":"What's the token balance for wallet 0xAbc123...def for these contracts: 0xToken1... and 0xToken2...?","exampleUseCases":[{"title":"Portfolio token balance snapshot","prompt":"Check the token balances for wallet 0x1234abcd...5678 for USDC at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 and USDT at 0xdAC17F958D2ee523a2206206994597C13D831ec7."},{"title":"DeFi dashboard balance check","prompt":"Pull the current balances for wallet 0xDeFi...9999 across these three token contracts: 0xTokenA, 0xTokenB, and 0xTokenC — I want to see how much of each token they're holding."},{"title":"Wallet audit for specific tokens","prompt":"Look up how many governance tokens this wallet 0xDao...abcd holds — here are the contract addresses for the tokens I care about: 0xGov1 and 0xGov2."}],"resultDescription":"Returns a list of token balances associated with the specified owner wallet address for each provided contract address, including amounts held per token contract.","failureModes":["Invalid or malformed wallet address returns an error or empty result","Non-existent contract address may return zero balance or an error","Network unavailability on the target blockchain results in a timeout or 503","Missing required 'owner' field causes a 400 bad request","Empty contractAddresses array may return an empty result set"],"whenToPreferThis":"Choose this endpoint when you need to look up ERC-20 token balances for a specific wallet address against one or more contract addresses, particularly in automated DeFi portfolio tracking, wallet auditing, or token distribution verification workflows. It is pay-per-call via x402/USDC micropayment, making it cost-effective for on-demand lookups rather than bulk historical queries.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T07:44:07.647Z","isFirstParty":false,"canonicalSlug":"synapse-api-humanity-token-balances-50bfb9f2"}