{"uid":"cap_zrb1-_9Ahp1rmlQi_6dF9","slug":"sableforge-address-balance-lookup-d7a1487f","name":"SableForge Address Balance Lookup","description":"12 pay-per-call HTTP APIs settled in USDC on Base via x402 v2. No API keys, no accounts, no signup — $0.0005–$0.0020 per call. Includes a locally hosted 27B LLM endpoint.","url":"https://sableforge.servehttp.com/api/addr?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"addr":{"type":"string"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"eth":1.2,"usdc":34.5,"address":"0xabc"}},"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_WPpqspb0pVvR5N1nfbO7a","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":"Looks up ETH and USDC token balances for a given blockchain wallet address on Base, paid per-call in USDC via x402.","exampleAgentPrompt":"What are the current ETH and USDC balances for the wallet address 0xabc123... on Base?","exampleUseCases":[{"title":"Agent treasury balance check","prompt":"Check how much ETH and USDC is currently sitting in our agent's wallet at 0xDEAD...BEEF — I want to know if we have enough to keep paying for API calls."},{"title":"DeFi portfolio snapshot","prompt":"Pull the ETH and USDC balances for address 0x1234...5678 on Base so I can see how that wallet's holdings look right now."},{"title":"Automated payment threshold monitor","prompt":"Look up the balance of 0xABCD...1234 and tell me if there's less than 10 USDC left — I need to top it up before the agent runs out of funds."}],"resultDescription":"Returns a JSON object containing the ETH balance, USDC balance, and the queried wallet address (e.g. {eth: 1.2, usdc: 34.5, address: '0xabc'}).","failureModes":["Invalid or malformed address returns an error response","Address with no onchain activity may return zero balances","Payment failure via x402 (insufficient USDC) blocks the request","Network downtime on Base may cause stale or failed lookups","Non-Base-network addresses may not resolve correctly"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, no-signup balance lookup for a wallet address on Base and are already operating in an x402 micropayment context. It is ideal for autonomous agents that need to check their own treasury or a counterparty's wallet balance programmatically without setting up traditional API credentials.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T06:38:11.413Z","isFirstParty":false,"canonicalSlug":"sableforge-address-balance-lookup-d7a1487f"}