# Services from books.withzero.ai on Zero

> books.withzero.ai serves 3 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/books.withzero.ai
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/books.withzero.ai/health.json

## Services

- [Open Library Book Search](https://www.zero.xyz/c/books-withzero-ai-open-library-book-search-da650393/llms.txt): $0.001/call via MPP. Searches the Open Library catalog by title, author, or ISBN and returns book metadata including ratings and cover images
- [books.withzero.ai Root Endpoint](https://www.zero.xyz/c/books-withzero-ai-root-endpoint-b55a190b/llms.txt): price not listed via MPP. Returns the root landing page or API entry point for the books.withzero.ai book search service
- [GET /contract - books.withzero.ai Contract Info](https://www.zero.xyz/c/books-withzero-ai-get-contract-books-withzero-ai-contract-info-21522d63/llms.txt): price not listed via MPP. Retrieves contract or terms information for the books.withzero.ai service

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

- [Zero catalog index](https://www.zero.xyz/llms.txt)