Mammoth MCP Server

Mammoth MCP Server

Converts Microsoft Word DOCX files to clean, semantic HTML with support for preserving formatting, tables, lists, and optionally embedding images as base64 data URIs.

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README

mammoth-mcp

NPM version NPM downloads

A Model Context Protocol (MCP) server for converting DOCX files to HTML using mammoth.js.

Features

  • convert_docx_to_html: Convert DOCX files to clean HTML
  • convert_docx_to_html_with_images: Convert DOCX files to HTML with embedded base64 images

Installation

$ pnpm install

Development

$ npm run dev
$ npm run build

Usage

Configure MCP Client

Add the server to your MCP client configuration (e.g., Claude Desktop):

{
  "mcpServers": {
    "mammoth": {
      "command": "node",
      "args": ["/absolute/path/to/mammoth-mcp/dist/cjs/index.js"]
    }
  }
}

Or if installed globally:

{
  "mcpServers": {
    "mammoth": {
      "command": "mammoth-mcp"
    }
  }
}

Available Tools

convert_docx_to_html

Convert a DOCX file to HTML.

Parameters:

  • filePath (string, required): Absolute path to the DOCX file

Example:

{
  "filePath": "/path/to/document.docx"
}

convert_docx_to_html_with_images

Convert a DOCX file to HTML with images embedded as base64 data URIs.

Parameters:

  • filePath (string, required): Absolute path to the DOCX file

Example:

{
  "filePath": "/path/to/document-with-images.docx"
}

How It Works

This MCP server uses mammoth.js to convert DOCX documents to clean, semantic HTML. The conversion preserves:

  • Headings
  • Paragraphs
  • Lists
  • Tables
  • Bold/italic/underline formatting
  • Images (when using the with_images variant)

LICENSE

MIT

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