{"uid":"cap_RypYkgG95sRGdQTbN3Dgv","slug":"open-library-book-search-a3d42229","name":"Open Library Book Search","description":"309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.","url":"https://x402-toolbox.shablony-pro.workers.dev/data/book-search-openlibrary?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"schema":{"type":"string"}}},"responseSchema":{"type":"json","example":{"ok":true,"paid":true}},"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_mxhzXUPSRzcsmVd579jIr","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":"Searches the Open Library catalog for books by title, author, subject, or other query terms and returns matching book records.","exampleAgentPrompt":"Can you search Open Library for books about machine learning by Andrew Ng and give me the top results?","exampleUseCases":[{"title":"Author bibliography lookup","prompt":"Search Open Library for all books written by Ursula K. Le Guin and show me the titles and publication years."},{"title":"Subject-based book discovery","prompt":"Find me books about the history of the Roman Empire on Open Library — I want to see titles, authors, and any ISBNs."},{"title":"Title verification for purchase","prompt":"Look up 'The Pragmatic Programmer' on Open Library and confirm the authors and edition details for me."}],"resultDescription":"A JSON object with ok and paid flags plus a list of matching book records from the Open Library catalog, each typically containing title, author(s), publication year, ISBN(s), Open Library work ID, and subject tags.","failureModes":["No results found for an overly specific or misspelled query","Open Library API unavailable or rate-limited, resulting in an error response","Payment failure via x402 protocol returning a 402 status before any data is returned","Ambiguous query returning unrelated books"],"whenToPreferThis":"Choose this endpoint when you need free, no-signup bibliographic search against the Open Library (Internet Archive) catalog, especially for classic, out-of-print, or public domain books. It is ideal for agents that need book metadata without requiring a commercial API key and can pay $0.001 USDC per call via x402.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T06:48:24.622Z","isFirstParty":false,"canonicalSlug":"open-library-book-search-a3d42229"}