Catalo.ai MCP Server

Find Books You'll Actually Finish

You know what you like in a book,
You just haven't had a good way to search for it.
Until now...

Catalo.ai is an AI-curated book catalog built for readers who are tired of vague recommendations. Search by mood, theme, pacing, genre, and more — without hallucinated titles or the same 10 books everyone already knows.

What you can do here that you can't do anywhere else

• Search by vibe, not just genre — filter by mood, theme, pacing, writing style, and atmosphere in combination. Ask for "slow-burn, atmospheric, cold setting, not action-heavy" and get real results.
• Find lesser-known titles — the catalog is curated to surface books beyond the usual bestseller lists and algorithmic "if you liked X" suggestions.
• No hallucinated titles — general-purpose LLMs frequently invent books that don't exist. Every result in Catalo is a real book from a real, curated catalog.
• Natural language discovery inside your AI client — find books mid-conversation without switching apps or tabs.
• A reading list your AI can reason over — bookmark books with personal notes, then ask your AI to analyze your habits across what you've finished, dropped, or want to read next.
• Explore the search space itself — ask what filters exist and what values are valid; the catalog's own structure is queryable.

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Connecting

To use Catalo.ai's MCP server, configure the following MCP server in a compatible AI client:

Property	Value
Server	https://catalo.ai/mcp
Transport	Streamable HTTP
Auth	OAuth 2.0 (your client should handle this automatically)

When you connect, your AI client will walk you through a quick OAuth login to link your Catalo.ai account. After that, everything just works.

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Tools

explore_books

Search and filter fiction books using advanced criteria. This is the main discovery tool.

Supports filtering by genre, mood, theme, pacing, writing style, time period, setting, and more.

get_book_details

Get full details for up to 5 books returned by explore_books — including descriptions, metadata, and anything else you need to decide if a book is worth your time.

list_filters

List all available filter identifiers and their valid values. Use this to discover what you can pass to explore_books.

list_bookmarked_books

List your bookmarked books, filtered by bookmark state (e.g. want to read, reading, finished).

save_bookmark

Save or update a bookmark for a book, with an optional personal note.

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Suggested Prompts

Discovery

• "Find me a slow-burn literary thriller set in a cold, remote location — something atmospheric, not action-heavy."
• "I want a fantasy novel that isn't epic in scale — more intimate, character-driven, maybe bittersweet."
• "Recommend some lesser-known sci-fi from the 70s or 80s with a philosophical bent."
• "I loved the vibe of Piranesi — find me something with that same dreamlike, uncanny feeling."

Using filters

• "What moods and themes can I filter books by?"
• "Show me all the pacing options available, then find me something fast-paced and tense."

Bookmarks

• "Show me all the books I've bookmarked but haven't started yet."
• "Bookmark that last book and add a note: recommended by my sister."

Statistics

• "Analyze the books I've read, want to read, and the books I've dropped, then give me insights into my reading habits."