{"uid":"cap_phpFez8PiYSXBNKyfXjfd","slug":"gutenberg-books-by-topic-search-7c781be0","name":"Gutenberg Books by Topic Search","description":"Public-domain books from Project Gutenberg matching a topic/subject q. Query: ?q= Returns JSON.","url":"https://clonecho.builda.company/x402/s/gutenberg-books-by-topic","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_bs4uuLjsS9gNWKsO0v5ip","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a list of public-domain books from Project Gutenberg that match a given topic or subject query.","exampleAgentPrompt":"Can you find me a list of public-domain books from Project Gutenberg about the topic of 'stoicism'?","exampleUseCases":null,"resultDescription":"A JSON array of public-domain book records from Project Gutenberg matching the specified topic/subject, likely including titles, authors, and download counts.","failureModes":["Empty result set if topic is too obscure or misspelled","Payment failure if USDC balance is insufficient (x402 protocol error)","Ambiguous query returning unrelated books","API timeout or server error returning non-200 status"],"whenToPreferThis":"Use this endpoint when you need to discover public-domain books filtered by subject or topic (e.g., 'philosophy', 'adventure', 'women'), as opposed to searching by title or author name. Prefer this over the title/author sibling endpoint when the user knows a theme but not a specific book.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:17:54.370Z","isFirstParty":false}