mcp-server-lo-doc-reader

The local-first, privacy-focused MCP server for high-fidelity document parsing.

lo-doc-reader is a Model Context Protocol (MCP) server that enables AI assistants (like Claude, Cursor, and Windsurf) to read complex documents by leveraging a local LibreOffice installation.

🌟 Why lo-doc-reader?

While many document parsers struggle with complex layouts or legacy formats, lo-doc-reader uses the battle-tested LibreOffice engine to provide:

• 🔒 Absolute Privacy: Your documents never leave your machine. No cloud APIs, no data collection, and no third-party processing.
• 🏛️ Superior Legacy Support: Seamlessly handles .doc, .rtf, and older formats that break modern lightweight libraries.
• ⚙️ Headless Efficiency: Runs in the background using isolated user profiles. It won't interfere with your open LibreOffice windows or documents.
• 💰 Zero Cost: No per-page fees or subscription limits.

🚀 Quick Start

Prerequisites

• Node.js ≥ 18
• LibreOffice ≥ 24.2 (Download here)

MCP Client Configuration

Add this to your claude_desktop_config.json or equivalent client settings:

{
  "mcpServers": {
    "lo-doc-reader": {
      "command": "npx",
      "args": ["-y", "@cadivus/mcp-server-lo-doc-reader"]
    }
  }
}

📂 Supported File Formats

| Extension | Description | | :--- | :--- | | .docx / .doc | Microsoft Word (Modern & Legacy) | | .odt / .fodt | OpenDocument Text / Flat XML | | .rtf | Rich Text Format | | .epub | Electronic Publication (E-books) | | .html / .htm | Web Documents |

🛠️ How It Works

1. Detection: Automatically finds the soffice binary across macOS, Windows, and Linux.
2. Sandboxing: Creates a temporary, isolated user profile for every request to ensure thread safety and prevent configuration conflicts.
3. Conversion: Invokes a headless instance of LibreOffice to perform a native export to Markdown.
4. Cleanup: Instantly purges all temporary files and profiles once the content is delivered to your LLM.

🧰 Available Tools

read_document

Extracts text from a document and returns it as LLM-optimized Markdown.

• Input: filePath (The absolute path to your file).

list_supported_formats

Displays all extensions currently supported by your local installation.

⚠️ Limitations & Notes

• Formatting: Complexity is limited by LibreOffice's Markdown export filter (tables and images may have simplified rendering).
• Scopes: Spreadsheets (.xlsx) and Presentations (.pptx) are not currently supported.
• Paths: Ensure you provide the absolute path to the file so the server can locate it reliably.

🏷️ Keywords & Use Cases

mcp-server, context-window, RAG, local-llm, document-parsing, privacy-focused-ai, word-to-markdown, offline-ai-tools, claude-desktop-tools.

📜 License

Copyright © 2026. Licensed under the Apache License, Version 2.0.