{"uid":"cap_JMCtgqwvFfJTbxofaw45H","slug":"free-books-space-ships-be2f078c","name":"free-books-space-ships","description":"Free public-domain books on \"Space ships\": browse the catalogue's works tagged with that Library of Congress subject (208 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.","url":"https://intel.rallylive.ca/library/subject/space-ships","method":"GET","headers":{},"bodySchema":{"type":"object","$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","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_odsEaX20efbYzyNBHoIjN","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Browses and returns a paginated catalogue of free public-domain books tagged with the Library of Congress subject 'Space ships', with download links and relevance ranking.","exampleAgentPrompt":"Can you pull up a list of free public-domain books about space ships — something from Project Gutenberg or Internet Archive — and give me epub download links I can use right away?","exampleUseCases":[{"title":"Classic sci-fi reading list builder","prompt":"Find me free public-domain books about space ships so I can put together a classic science fiction reading list — I want titles with download links in epub or txt format."},{"title":"Narrowing by author for research","prompt":"Search the free public-domain space ships book catalogue for anything written by Jules Verne and give me the download links."},{"title":"Exploring spacecraft fiction by title keyword","prompt":"Look through the free space ships ebook catalogue for books with 'rocket' in the title and show me what's available with their download links."}],"resultDescription":"A ranked, paginated list (20 items per page) of public-domain books tagged with the Library of Congress 'Space ships' subject, including title, author, relevance/popularity ranking, and direct download links in epub, txt, and/or html formats. Results are drawn from Project Gutenberg (208+ works) and Internet Archive scans, re-verified daily.","failureModes":["No results if search terms are too narrow or misspelled","Empty catalogue page if page number exceeds available results","Stale download links if a source removed the file between daily re-verifications","HTTP 402 if payment of $0.01 USDC is not provided","Rate limiting or errors if the upstream Gutenberg/Archive catalogue is unreachable"],"whenToPreferThis":"Choose this endpoint when you need a curated, relevance-ranked list of free public-domain books specifically on the 'Space ships' subject with ready-to-use download links, rather than doing a general web search or querying Project Gutenberg directly — especially useful when you want results aggregated across both Gutenberg and Internet Archive in a single paginated call at very low cost.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:52:49.248Z","isFirstParty":false}