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Gutenberg Books by Topic Search
x402
Gutenberg Books by Topic Search is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Returns a list of public-domain books from Project Gutenberg that match a given topic or subject query.
Price / call$0.02
Success—
StatusUnknown
How this service works
Public-domain books from Project Gutenberg matching a topic/subject q. Query: ?q= Returns JSON.
Output
A JSON array of public-domain book records from Project Gutenberg matching the specified topic/subject, likely including titles, authors, and download counts.
Example use cases
Example prompt
“Can you find me a list of public-domain books from Project Gutenberg about the topic of 'stoicism'?”
Technical details
Endpoint
POSThttps://clonecho.builda.company/x402/s/gutenberg-books-by-topicWhen to prefer
Use this endpoint when you need to discover public-domain books filtered by subject or topic (e.g., 'philosophy', 'adventure', 'women'), as opposed to searching by title or author name. Prefer this over the title/author sibling endpoint when the user knows a theme but not a specific book.
Side effects
- Empty result set if topic is too obscure or misspelled
- Payment failure if USDC balance is insufficient (x402 protocol error)
- Ambiguous query returning unrelated books
- API timeout or server error returning non-200 status
Tags
x402
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