# Gutendex Books Search via Clonecho

> Gutendex Books Search via Clonecho 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).

Search public-domain books from Project Gutenberg by title or author, returning metadata and download counts

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/s/gutendex-books
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gutendex-books-search-via-clonecho-2204a6ed
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MT4yS0olk3kJvsPrkTePA

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability gutendex-books-search-via-clonecho-2204a6ed -d '<json body>'
```

Example prompt: Can you search Project Gutenberg for books by Charles Dickens and show me their download counts?

## When to prefer this

Use this endpoint when you need to search the Project Gutenberg catalog for public-domain books by title or author and want to see download popularity data. Prefer this over a general web search when you need structured, machine-readable book metadata from the Gutenberg corpus specifically.

## Known failure modes

- Empty query returns no results or error
- Very obscure titles may return zero matches
- Query with special characters may not parse correctly
- Rate limiting or payment failure returns 402 error
- Network timeout if Gutendex upstream is slow

## How this service works

Public-domain books from Project Gutenberg by title/author search with download counts (param: query). Query: ?query= Returns JSON.

## Output

A JSON response containing a list of matching Project Gutenberg books, including titles, authors, download counts, and associated metadata for each result matching the query.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gutendex-books-search-via-clonecho-2204a6ed/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from clonecho.builda.company](https://www.zero.xyz/host/clonecho.builda.company/llms.txt)