{"uid":"cap_uw7WwR7-3GgNAp3NgW_QY","slug":"open-library-book-search-8d0f0a79","name":"Open Library Book Search","description":"51 REST endpoints for AI agents. Weather, news, crypto, stocks, products, courses, real estate, and 42 more. Pay per call in USDC/USDT via x402.","url":"https://engedi.digi-life17.workers.dev/api/books","method":"GET","headers":{},"bodySchema":null,"responseSchema":{},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_oLAYZPbXwWETzcGqbwkUw","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Search over 40 million books via Open Library, returning ranked results by relevance, newest, or oldest","exampleAgentPrompt":"Can you search Open Library for books about stoic philosophy, sorted by relevance, and give me the top 5 results?","exampleUseCases":null,"resultDescription":"Returns a data object containing book records from Open Library (titles, authors, metadata), plus a _meta object indicating whether the result was cached, the source, a confidence score, and last updated timestamp, along with a success boolean.","failureModes":["Missing required 'q' query parameter returns error","Invalid sort value may return default or error","No results found for obscure queries returns empty data","Rate limiting or payment failure returns 402","Cached results may be stale"],"whenToPreferThis":"Use this endpoint when you need to search a massive catalog of 40M+ books by title, author, or topic with optional sorting by relevance, newest, or oldest. Prefer this over generic web search when you specifically need structured book metadata from Open Library.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:53:40.992Z","isFirstParty":false}