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free-books-birds
x402
free-books-birds 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).
Returns a paginated catalogue of free public-domain books about birds from Project Gutenberg and Internet Archive, ranked by relevance and popularity, with download links.
Price / call$0.01
Success—
StatusUnknown
How this service works
Free public-domain books on "Birds": browse the catalogue's works tagged with that Library of Congress subject (406 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 ranked page of up to 20 book records matching the 'birds' subject tag, each including title, author, relevance/popularity score, and direct download links in epub, txt, and/or html formats. Results are re-verified daily and sourced from Project Gutenberg and Internet Archive.
Example use cases
Researcher finding classic ornithology texts
“I'm researching 19th-century bird science — can you find me free downloadable books about birds from that era, ideally with epub links?”
Teacher building a reading list on birds
“I need a list of free public-domain books about birds I can share with students, with download links they can use right away.”
Birdwatcher looking for field guide classics
“Can you browse the free bird books catalogue and find anything about British songbirds or migratory species I could read as an ebook?”
Technical details
Endpoint
GEThttps://intel.rallylive.ca/library/subject/birdsWhen to prefer
Use this endpoint when you need a curated, daily-verified catalogue of free, public-domain books specifically tagged under the Library of Congress 'Birds' subject heading, with ready-to-use download links. Prefer it over general web search when you need structured ebook metadata (formats, authors, rankings) rather than raw search results, and when cost-per-lookup (as low as $0.01) matters.
Side effects
- No results returned if query keywords match no titles or authors in the catalogue
- Payment failure if USDC balance is insufficient for the $0.01 per call fee
- Rate limiting or HTTP 402 if payment header is missing or malformed
- Empty catalogue page if page number exceeds available results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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