mlziade/librarian

librarian

Librarian is a MCP (Model Context Protocol) Server that allows any LLM with a compatible MCP client to query Wikipedia for information. It can be configured to automatically fact-check information without requiring explicit user requests.

"The only thing that you absolutely have to know is the location of the library."

— Albert Einstein

Features

• Automatic Fact-Checking: Configure Claude Desktop to proactively verify factual claims using Wikipedia
• Wikipedia Search: Search for relevant Wikipedia articles
• Page Information: Get detailed information about specific Wikipedia pages
• Page Summaries: Quick summaries of Wikipedia pages
• Page Sections: Get specific sections from Wikipedia pages
• Multi-language Support: Query Wikipedia in different languages

Installation for Claude Desktop

This MCP server is designed to work with Claude Desktop. Follow these steps to set it up:

1. Prerequisites

• Claude Desktop installed on your computer
• uv package manager installed
• Python 3.13 or higher

2. Clone and Set Up the Project

git clone <your-repository-url>
cd librarian
uv sync

3. Configure Claude Desktop

Add this configuration to your Claude Desktop configuration file:

Windows: %APPDATA%\Claude\claude_desktop_config.json macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Linux: ~/.config/Claude/claude_desktop_config.json

{
    "mcpServers": {
        "librarian": {
            "command": "uv",
            "args": ["run", "python", "librarian.py"],
            "cwd": "C:\\Users\\YourUsername\\Documents\\librarian",
            "env": {
                "PYTHONPATH": "C:\\Users\\YourUsername\\Documents\\librarian"
            }
        }
    }
}

Important: Replace C:\\Users\\YourUsername\\Documents\\librarian with the actual path where you cloned the repository.

4. Restart Claude Desktop

After adding the configuration, restart Claude Desktop completely to load the MCP server.

Automatic Fact-Checking Setup

To make Claude Desktop automatically use Wikipedia for fact-checking, start your conversations with:

"Use your Wikipedia tools to automatically fact-check any factual claims in our conversation. Don't wait for me to ask - proactively verify information and provide corrections when needed."

Or use the built-in system prompt by referencing: fact_checking_instructions

Behavior Examples

Once configured, Claude Desktop will automatically:

• ✅ Verify historical dates and events
• ✅ Check biographical information
• ✅ Confirm scientific facts and discoveries
• ✅ Validate geographical information
• ✅ Correct common misconceptions
• ✅ Provide source attribution from Wikipedia

Available Tools

1. search_wikipedia_pages: Search for Wikipedia articles on any topic and return the top 5 results with selection information
2. get_wikipedia_page_info: Get comprehensive information about a specific page including content, summary, hyperlinked words, and categories
3. get_wikipedia_page_summary: Get quick summaries of Wikipedia pages with customizable sentence length
4. get_wikipedia_page_sections: Get a list of all sections on a Wikipedia page for large pages where you need specific information
5. get_wikipedia_page_sections_info: Get detailed content for specific sections of a Wikipedia page by title or index

All tools support multi-language Wikipedia queries by specifying the language parameter (default: "en").

Examples

Available Tools in Claude Desktop

Screenshot showing the Wikipedia tools available in Claude Desktop when the MCP server is properly configured

MCP Servers Configuration

Claude Desktop showing the librarian MCP server successfully connected and available

VS Code Integration Example

Example of using the librarian tools within VS Code with GitHub Copilot

License

This project is open source. Please check the license file for details.