# books.withzero.ai Root Endpoint

> books.withzero.ai Root Endpoint is a paid API for AI agents from books.withzero.ai, paid per call via MPP, price unknown, status unknown (last checked 2026-09-13).

Returns the root landing page or API entry point for the books.withzero.ai book search service

## Facts

- Endpoint: GET https://books.withzero.ai/
- Price: price unknown
- Payment: MPP
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Provider: books.withzero.ai
- Website: https://books.withzero.ai
- Canonical page: https://www.zero.xyz/c/books-withzero-ai-root-endpoint-b55a190b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_e8QoUn8bvDZ4oszYkRtkr

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 books-withzero-ai-root-endpoint-b55a190b
```

Example prompt: What does the books.withzero.ai service offer — can you pull up its homepage and tell me what book search capabilities it provides?

## When to prefer this

Use this endpoint when you need to check service availability, discover available capabilities, or retrieve root-level metadata about the books.withzero.ai platform before making more specific book search calls.

## Known failure modes

- Service unavailable (503) if the backend is down
- Timeout if the server is overloaded
- Empty or minimal response if no index page is configured

## Output

Returns a root-level response from the books.withzero.ai service, likely containing service metadata, welcome information, or navigation links to available endpoints such as book search by title, author, or ISBN.

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/books-withzero-ai-root-endpoint-b55a190b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from books.withzero.ai](https://www.zero.xyz/host/books.withzero.ai/llms.txt)