{"uid":"cap_n0KEwqOFsitBkjlsNysji","slug":"vendsdk-base-network-eth-usdc-balance-lookup-19ae1e90","name":"VendSDK Base Network ETH & USDC Balance Lookup","description":"Live Base mainnet ETH and USDC balances for an address — treasury and agent wallet checks","url":"https://vendsdk.com/api/v/base-balance","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"pathParams":{"type":"object"},"queryParams":{"type":"object","required":["address"],"properties":{"address":{"type":"string","description":"0x EVM address on Base"}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"ok":{"type":"boolean"},"eth":{"type":"string"},"usdc":{"type":"string"},"chain":{"type":"string"},"source":{"type":"string"},"service":{"type":"string"}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_wmyQXamU1v0erIK1R9d_W","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns live ETH and USDC balances for any EVM address on the Base mainnet blockchain","exampleAgentPrompt":"What are the current ETH and USDC balances for wallet address 0x1234abcd...5678 on Base mainnet?","exampleUseCases":[{"title":"Agent wallet pre-flight funding check","prompt":"Before the agent starts executing trades, check if 0xAgentWalletAddress has enough ETH and USDC on Base mainnet to cover gas and payments."},{"title":"Treasury balance monitoring","prompt":"Pull the current ETH and USDC balances for our treasury wallet 0xTreasuryAddress on Base so I know how much is available to deploy."},{"title":"User onboarding wallet verification","prompt":"Check whether the wallet 0xNewUserAddress already has any ETH or USDC on Base — I want to know if they've funded their account yet."}],"resultDescription":"Returns a JSON object with a boolean 'ok' field, 'eth' balance as a string, 'usdc' balance as a string, 'chain' identifier (Base mainnet), and 'service' and 'source' metadata fields. Balances reflect live on-chain state at query time.","failureModes":["Invalid or malformed 0x address returns an error response","Address with zero balance returns eth: '0' and usdc: '0' with ok: true","Network or RPC downtime may cause transient failures","Non-Base-network addresses return data for the Base equivalent address (no cross-chain resolution)"],"whenToPreferThis":"Use this endpoint when you need live ETH and USDC balances specifically on the Base (Coinbase L2) mainnet in a single call. Prefer it over generic blockchain explorers when you need both ETH and USDC in one fast, agent-friendly response without API key setup. Ideal for pre-flight checks before payments, treasury monitoring, and verifying agent wallet funding on Base.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:36:10.562Z","isFirstParty":false}