# WorldData402 Books Search

> WorldData402 Books Search is a paid API for AI agents from worlddata402.worlddata402.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-19).

Search a global books reference database by keyword query, returning book metadata and information.

## Facts

- Endpoint: GET https://worlddata402.worlddata402.workers.dev/v1/books/search?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/worlddata402-books-search-fead7bf4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jB_LOULQu7rNF5zXWeMAV

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 worlddata402-books-search-fead7bf4
```

Example prompt: Search the WorldData402 books database for books about 'machine learning' and show me what you find.

## When to prefer this

Choose this endpoint when you need to search a global books reference database with a simple keyword query, especially when operating in an x402 pay-per-call micropayment environment on Base mainnet with USDC. Useful for agents that need on-demand book lookup without a subscription.

## Known failure modes

- Missing required 'q' parameter returns a 400/422 error
- Empty query string may return no results or an error
- Obscure or misspelled titles may return zero results
- Payment failure via x402 (insufficient USDC balance) prevents the call from completing
- Rate limiting or network timeouts on the Cloudflare Worker edge

## How this service works

Global market, government and reference data for AI agents. Pay-per-call over x402 (USDC on Base mainnet).

## Output

A JSON object containing book records matching the search query, likely including metadata such as titles, authors, publication details, ISBNs, and other reference information about matching books.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "q"
 ],
 "properties": {
  "q": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/worlddata402-books-search-fead7bf4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from worlddata402.worlddata402.workers.dev](https://www.zero.xyz/host/worlddata402.worlddata402.workers.dev/llms.txt)