The Open Library MCP server integrates with Open Library, a free, open-source book and author catalog run by the Internet Archive. It provides read-only tools for discovering books and authors, retrieving details, and fetching cover images — all without authentication.
When should you use this server
Use the Open Library MCP server when you want an agent to:
- Search for books by title
- Search for authors by name
- Fetch detailed author information
- Retrieve author photos
- Get book cover images by ISBN or other identifiers
Key features
- No authentication required — uses Open Library’s public API
- Simple, read-only operations for book and author discovery
- Cover image retrieval for books and authors
- ISBN lookup and bibliographic information
- Ideal for demos, prototypes, and educational use
Authentication
- None required — this server uses Open Library’s public API
get_book_by_title
Search for books using their title.
Arguments:
title (string, required) — the book title to search for.
Returns:
- List of matching books with metadata.
Example usage:
- “Find books with ‘Lord of the Rings’ in the title.”
- “Search for science textbooks about quantum physics.”
get_authors_by_name
Search for authors using their name.
Arguments:
name (string, required) — the author name to search for.
Returns:
- List of matching authors with basic information.
Example usage:
- “Find authors named Margaret Atwood.”
- “Search for writers with ‘Smith’ in their name.”
get_author_info
Retrieve detailed information for a specific author using their Open Library key.
Arguments:
author_key (string, required) — Open Library author key (OLID).
Returns:
- Detailed author information including birth/death dates, biography, and works.
Example usage:
- “Get detailed information about author OL26320A.”
- “Tell me more about this author.”
get_author_photo
Get the URL for an author’s photo using their Open Library ID (OLID).
Arguments:
olid (string, required) — Open Library author ID.size (string, optional) — image size (S, M, L), defaults to L.
Returns:
- URL to the author’s photo.
Example usage:
- “Get the photo of author OL26320A.”
- “Show me what this author looks like.”
get_book_cover
Get the URL for a book’s cover image using identifiers such as ISBN, OCLC, LCCN, OLID, or internal ID.
Arguments:
key (string, required) — identifier type (ISBN, OCLC, LCCN, OLID, ID).value (string, required) — identifier value.size (string, optional) — image size (S, M, L), defaults to L.
Returns:
- URL to the book’s cover image.
Example usage:
- “Get the cover image for ISBN 9780547928227.”
- “Show me the book cover for The Hobbit.”
Rate limits
- Controlled by Open Library’s public API rate limits (sufficient for typical usage)
- Avoid bulk or automated scraping
Notes
- All tools are read-only
- Records may be incomplete or inconsistent, since data is community-maintained
- Great for lightweight demos and testing MCP connectivity, since it requires no credentials
Last modified on April 2, 2026
