{"uid":"cap_7ZMacqpQ_rCnmwciJa9M0","slug":"free-books-united-states-b7161985","name":"free-books-united-states","description":"Free public-domain books on \"United States\": browse the catalogue's works tagged with that Library of Congress subject (2,830 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. $0.01 per page of 20.","url":"https://intel.rallylive.ca/library/subject/united-states","method":"GET","headers":{},"bodySchema":{"type":"object","$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_CqgpvedJz7i86zgyNU9JG","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":"Browse and retrieve public-domain books about the United States from Project Gutenberg and Internet Archive, ranked by relevance and popularity, with download links.","exampleAgentPrompt":"Can you pull up a list of free public-domain books about the United States — I want epub or txt downloads — maybe filter by books about the Civil War if possible?","exampleUseCases":[{"title":"Research reading list on American history","prompt":"Find me a page of free downloadable public-domain books about United States history I can read as epub files — I'm putting together a reading list for a research project."},{"title":"Browsing classic American literature for free","prompt":"Pull up free classic books tagged United States from Project Gutenberg so I can find something to read this weekend — give me the most popular ones first."},{"title":"Finding books by a specific American author","prompt":"Search the free US-subject book catalogue for works by Mark Twain — I want to see what's available to download for free in epub or text format."}],"resultDescription":"A paginated list of up to 20 public-domain books tagged with the Library of Congress 'United States' subject heading, including title, author, relevance/popularity ranking, and direct download links in epub, txt, and/or html formats. Results are drawn from Project Gutenberg (2,830+ titles) and Internet Archive scans, re-verified daily.","failureModes":["No results returned if keyword filters are too restrictive or misspelled","Pagination out of range returns empty result set","Intermittent availability if upstream Project Gutenberg or Internet Archive is unreachable","Download links may be stale between daily re-verification cycles","Rate limiting or payment failure if USDC balance is insufficient"],"whenToPreferThis":"Choose this endpoint when you need to discover and retrieve free, legally downloadable public-domain books specifically about the United States, curated from Project Gutenberg and Internet Archive with daily link verification. Prefer it over raw Project Gutenberg search when you want pre-ranked, relevance-sorted results with direct download links in a simple paginated API response.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:22:00.074Z","isFirstParty":false}