What is Windows Rs Mcp

windows-rs-mcp is an MCP server designed for searching the Rust ‘windows’ crate API documentation, enabling users to quickly access relevant information from the official documentation hosted at microsoft.github.io.

Use cases

Use cases include searching for specific Windows API functions while coding, retrieving documentation for better understanding of API usage, and exploring related API items to discover additional functionalities.

How to use

To use windows-rs-mcp, install the required Playwright browsers, then run the server using ‘uvx windows-rs-mcp’ or ‘uv run windows-rs-mcp’ from the project directory. Configure it in Claude Desktop settings for optimal use.

Key features

Key features include the ability to search Windows API functions, structs, enums, retrieve detailed documentation for exact matches, and find related API items during searches.

Where to use

windows-rs-mcp is particularly useful for Rust developers working on Windows applications, providing them with quick access to API documentation and enhancing their development workflow.

Windows Crate Docs Search MCP

This project provides a Claude Desktop MCP server that allows searching the Rust windows crate API documentation hosted at microsoft.github.io/windows-docs-rs.

It uses Playwright to interact with the documentation website’s search functionality and the features table.

Features

• Search Windows API: Use the search_windows_api tool to find functions, structs, enums, etc., within the windows crate docs.
• Get Documentation: Retrieve detailed documentation for exact matches, including description, signature, and the required Cargo feature (best effort).
• Find Related Items: List related API items found during the search.

Usage

This package requires Playwright browsers to be installed. The server attempts to install the default browser (chromium) automatically on the first run. You can skip this by setting the MCP_SKIP_PLAYWRIGHT_INSTALL environment variable.

Running the MCP Server

Using uvx:

The simplest way to run the server after installation is using uvx:

uvx windows-rs-mcp

Running Locally with uv:

If you have cloned the repository, you can run the server directly using uv run from the project directory:

# Navigate to the project root directory
# cd /path/to/windows-rs-mcp  (Linux/macOS)
# cd C:\path\to\your\project\windows-rs-mcp (Windows)

# Run the server
uv run windows-rs-mcp

Configuring Claude Desktop

To use this MCP with Claude Desktop, add the following configuration to your Claude Desktop settings:

Option 1: Using uvx (Recommended)

{
  "mcpServers": {
    "windows-docs": {
      "command": "uvx",
      "args": [
        "windows-rs-mcp"
      ]
    }
  }
}

Option 2: Using uv run (For local source)

Make sure to replace the placeholder path in args with the actual absolute path to your project directory.

After configuring, restart Claude Desktop. You should then be able to use the search_windows_api tool.

Configuring Cursor

Open .cursor/mcp.json and add the MCP server

{
  "mcpServers": {
    "windows-rs-mcp": {
      "command": "uvx",
      "args": [
        "windows-rs-mcp"
      ]
    }
  }
}

Environment Variables

• MCP_SKIP_PLAYWRIGHT_INSTALL: Set to true, 1, or yes to skip the automatic Playwright browser installation check.
• MCP_PLAYWRIGHT_BROWSER: Specifies the browser Playwright should install (defaults to chromium). Other options include firefox and webkit.