# Open Library Book Search

> Open Library Book Search is a paid API for AI agents from x402-toolbox.shablony-pro.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-29).

Searches the Open Library catalog for books by title, author, subject, or other query terms and returns matching book records.

## Facts

- Endpoint: GET https://x402-toolbox.shablony-pro.workers.dev/data/book-search-openlibrary?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/open-library-book-search-a3d42229
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RypYkgG95sRGdQTbN3Dgv

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 open-library-book-search-a3d42229
```

Example prompt: Can you search Open Library for books about machine learning by Andrew Ng and give me the top results?

## When to prefer this

Choose this endpoint when you need free, no-signup bibliographic search against the Open Library (Internet Archive) catalog, especially for classic, out-of-print, or public domain books. It is ideal for agents that need book metadata without requiring a commercial API key and can pay $0.001 USDC per call via x402.

## Known failure modes

- No results found for an overly specific or misspelled query
- Open Library API unavailable or rate-limited, resulting in an error response
- Payment failure via x402 protocol returning a 402 status before any data is returned
- Ambiguous query returning unrelated books

## How this service works

309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.

## Output

A JSON object with ok and paid flags plus a list of matching book records from the Open Library catalog, each typically containing title, author(s), publication year, ISBN(s), Open Library work ID, and subject tags.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "schema": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/open-library-book-search-a3d42229/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-toolbox.shablony-pro.workers.dev](https://www.zero.xyz/host/x402-toolbox.shablony-pro.workers.dev/llms.txt)