{"uid":"cap_X3clEIFeeEzJ08h8o3Gff","slug":"free-books-marriage-8471c3a2","name":"free-books-marriage","description":"Free public-domain books on \"Marriage\": browse the catalogue's works tagged with that Library of Congress subject (284 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. $0.01 per page of 20.","url":"https://intel.rallylive.ca/library/subject/marriage","method":"GET","headers":{},"bodySchema":{"type":"object","$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_yQAqsFUXQAihhQI9Xhuhd","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":"Returns a paginated catalogue of free public-domain books tagged with the Library of Congress subject 'Marriage', ranked by relevance and popularity, with direct download links.","exampleAgentPrompt":"Can you find me free public-domain ebooks about marriage — ideally classic or historical texts I can download right now? Show me the most popular ones first.","exampleUseCases":[{"title":"Historical research on marriage customs","prompt":"I'm writing a paper on Victorian-era marriage customs — can you pull up free downloadable books on the subject of marriage from Project Gutenberg or the Internet Archive, ranked by popularity?"},{"title":"Browsing classics for a reading list","prompt":"I want to build a reading list of classic literature about marriage. Can you browse the free public-domain catalogue and show me the top results with download links?"},{"title":"Narrowing search by author on marriage topic","prompt":"Can you search the free marriage-topic ebook catalogue for anything written by Leo Tolstoy? I'd like epub or txt download links if available."}],"resultDescription":"A ranked, paginated list (up to 20 per page) of public-domain books tagged with the Library of Congress subject 'Marriage', including title, author, relevance/popularity ranking, and direct download links in epub, txt, and/or html formats. Re-verified daily against Project Gutenberg (284+ works) and Internet Archive.","failureModes":["No results returned if query terms don't match any indexed title or author","Pagination beyond available results returns empty set","Downstream source (Project Gutenberg/Internet Archive) temporarily unavailable, causing stale or missing links","Rate-limited or payment failure (x402) if USDC payment is not included"],"whenToPreferThis":"Choose this endpoint when you need a curated, daily-verified catalogue of free public-domain books specifically on the topic of marriage, with direct download links and relevance ranking. Prefer it over raw Project Gutenberg or Internet Archive searches when you want a structured, filterable API response rather than scraping HTML pages.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:21:45.488Z","isFirstParty":false}