{"uid":"cap_O5DWBJxVbBPX45IqXQyjd","slug":"bal-check-base-eth-usdc-balance-lookup-37c66671","name":"bal-check Base ETH+USDC Balance Lookup","description":"Base ETH+USDC balance. Pay $0.003 USDC on Base via x402.","url":"https://bal-check.restockalarm.workers.dev/v1/balance?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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"},"queryParams":{"type":"object","required":["address"],"properties":{"address":{"type":"string","description":"0x-prefixed EVM address"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"eth":"0.01","usdc":"12.5","chain":"base","address":"0x7B97…"}},"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_UCRorS8CgqrLbq7zHSaat","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 the ETH and USDC balances of a given EVM wallet address on the Base blockchain","exampleAgentPrompt":"Can you check the ETH and USDC balances for the wallet address 0x7B97... on Base?","exampleUseCases":[{"title":"DeFi portfolio balance check","prompt":"What are the current ETH and USDC balances on Base for my wallet 0xAbc123...4567?"},{"title":"Pre-transaction liquidity check","prompt":"Before I send the payment, can you verify how much USDC and ETH the address 0x1234...abcd has available on Base?"},{"title":"Automated agent wallet monitoring","prompt":"Check the ETH and USDC balances on Base for 0xDead...Beef so I can see if it needs to be topped up."}],"resultDescription":"A JSON object containing the ETH balance as a decimal string, the USDC balance as a decimal string, the chain identifier ('base'), and the queried wallet address — e.g. {\"eth\":\"0.01\",\"usdc\":\"12.5\",\"chain\":\"base\",\"address\":\"0x7B97…\"}.","failureModes":["Missing or invalid address parameter returns an error","Non-0x-prefixed or malformed address may cause a validation error","Payment failure (insufficient USDC on Base for the $0.003 x402 fee) blocks the request","Address exists but has zero balances — returns 0 for both eth and usdc","Network or RPC errors on Base may cause transient failures"],"whenToPreferThis":"Choose this endpoint when you need a quick, cheap ($0.003 USDC) on-chain balance lookup for both ETH and USDC on the Base network for any EVM address, without needing to run your own RPC node or integrate a heavier blockchain data provider. Ideal for lightweight agent workflows checking wallet liquidity before transactions or monitoring balances.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T06:39:47.992Z","isFirstParty":false,"canonicalSlug":"bal-check-base-eth-usdc-balance-lookup-37c66671"}