{"uid":"cap_2mX53zB8d_x0IYSCUzUAu","slug":"tollkit-chain-balance-a313434c","name":"Tollkit Chain Balance","description":"Wallet balance on Base or Ethereum: give an address, get its native ETH plus USDC (and USDT on Ethereum), and any other ERC-20 tokens you list (up to 20), with symbols and decimals applied. Read live from the chain. $0.002 per call; a bad address or an RPC failure is not charged.","url":"https://extract.tollkit.dev/chain/balance?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"chain":{"enum":["base","ethereum","solana"],"type":"string","default":"base","description":"Which chain to read: \"base\" (default), \"ethereum\" or \"solana\"."},"tokens":{"type":"array","items":{"type":"string","pattern":"^(0x[0-9a-fA-F]{40}|[1-9A-HJ-NP-Za-km-z]{32,44})$"},"maxItems":20,"description":"Extra ERC-20 contracts (or SPL mints on Solana) to include."},"address":{"type":"string","pattern":"^(0x[0-9a-fA-F]{40}|[1-9A-HJ-NP-Za-km-z]{32,44})$","description":"Wallet (or contract) address to check."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_hd0xrIkFbEH2RFuwpd6WD","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the native ETH balance plus USDC, USDT (Ethereum), and up to 20 additional ERC-20 tokens for a given wallet or contract address on Base, Ethereum, or Solana, read live from the chain.","exampleAgentPrompt":"What's the ETH and USDC balance of 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum, and also check its holdings for the USDT contract 0xdAC17F958D2ee523a2206206994597C13D831ec7?","exampleUseCases":[{"title":"DeFi portfolio snapshot for a wallet","prompt":"Can you pull the full balance breakdown for 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B on Base — I want to see the native ETH plus USDC and any tokens at these two contract addresses: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 and 0x50c5725949A6F0c72E6C4a641F24049A917DB0Cb?"},{"title":"Monitor treasury wallet holdings on Ethereum","prompt":"Check the current ETH, USDC, and USDT balances for our treasury wallet 0x742d35Cc6634C0532925a3b844Bc454e4438f44e on Ethereum so I can see what we're holding right now."},{"title":"Verify Solana wallet token balances","prompt":"Look up the token balances for the Solana wallet 9WzDXwBbmkg8ZTbNMqUxvQRAyrZzDsGYdLVL9zYtAWWM and include the SPL mint So11111111111111111111111111111111111111112 so I can see its native SOL equivalent holdings."}],"resultDescription":"Returns the wallet's native balance (ETH or SOL) and balances for USDC, USDT (on Ethereum), plus any additional ERC-20 or SPL token contracts specified, with each token's symbol and decimals already applied so amounts are human-readable. Data is read live from the chain at time of request.","failureModes":["Invalid address format returns an error without charging the $0.002 fee","RPC node failure or chain unavailability returns an error without charging","Requesting more than 20 extra token contracts returns a validation error","Providing a Solana address format for an EVM chain (or vice versa) may return an error","Unknown or unverified ERC-20 contract addresses may return zero balance or missing metadata"],"whenToPreferThis":"Choose this endpoint when you need live, on-chain balance data for a wallet across Base, Ethereum, or Solana, especially when you want native ETH plus stablecoins (USDC/USDT) and custom ERC-20 holdings in a single call. Prefer this over block explorer APIs when you want pay-per-call pricing with no API key, or when you need decimals already applied. Not suitable for historical balances, NFT holdings, or transaction history.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T12:34:53.184Z","isFirstParty":false,"canonicalSlug":"tollkit-chain-balance-a313434c"}