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free-books-natural-history
x402
free-books-natural-history is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Browse and download public-domain books on Natural History from Project Gutenberg and Internet Archive, ranked by relevance and popularity, with epub/txt/html links.
Price / call$0.01
Success—
StatusUnknown
How this service works
Free public-domain books on "Natural history": browse the catalogue's works tagged with that Library of Congress subject (617 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.
Output
A paginated list (20 per page) of public-domain Natural History books including titles, authors, relevance/popularity rankings, and direct download links in epub, txt, and/or html formats, sourced from Project Gutenberg and Internet Archive and re-verified daily.
Example use cases
Research classic natural history texts
“Can you browse the free public-domain natural history catalogue and show me popular titles I can download as epub or txt? I'm looking for foundational works on animals and ecology.”
Find books by a specific author
“Search the free natural history book catalogue for anything written by Charles Darwin that I can download — show me the title, format options, and a direct download link.”
Narrow results by topic keyword
“Can you pull up free downloadable natural history books with 'birds' in the title from the public domain catalogue? I want epub or html versions if possible.”
Technical details
Endpoint
GEThttps://intel.rallylive.ca/library/subject/natural-historyWhen to prefer
Choose this endpoint when you need a curated, daily-verified catalogue of public-domain Natural History books with direct download links, especially when you want to filter by title or author keyword within that subject. Prefer it over a generic web search when you specifically need epub/txt/html download links and ranked results from Project Gutenberg or Internet Archive.
Side effects
- No results returned if query keywords are too specific or misspelled
- Pagination out of range returns empty result set
- Download links may occasionally be stale between daily re-verification cycles
- Rate or payment failure if USDC balance is insufficient for the $0.01 per call fee
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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