SolidWorks MCP Server

A comprehensive Model Context Protocol (MCP) server that gives Claude (or any MCP-compatible LLM client) full control of SolidWorks through the COM API. 187 tools spanning every major workflow — modeling, sketching, assemblies, drawings, sheet metal, weldments, mold tools, surfaces, simulation, motion, rendering, materials, and more.

✅ Verified on SolidWorks 2024 — handles SW 2024’s dual property/method API quirks (DISPID invocation, property-get bypass, 23-arg FeatureExtrusion3, VARIANT marshaling, etc.). Should also work on SW 2018+.

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✨ What you can ask Claude to do

• “Create a 100×60×40 mm aluminum part, render it, and export to STEP”
• “Open this assembly, check for interferences, then mass-analyze each component”
• “Generate a 3-view drawing of bracket.sldprt with dimensions, GD&T, and a BOM, then save as PDF”
• “Design a parametric sheet-metal enclosure with 2 mm thickness, four edge flanges, and export flat patterns”
• “Build a weldment frame from 40×40×4 square tube along this sketch”
• “Set up a static simulation, apply this fixture and 500 N load, and run the analysis”

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📋 Prerequisites

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🚀 Installation

1. Clone the repository

git clone https://github.com/Eduardof0nt/Solidworks-MCP-Server.git
cd Solidworks-MCP-Server

2. Install Python dependencies

pip install -r requirements.txt

If you hit permission issues installing globally, use a virtual environment or --user:

python -m venv .venv
.venv\Scripts\activate
pip install -r requirements.txt

3. Verify the server starts

python server.py

The server will sit waiting for MCP stdio traffic — that’s correct. Hit Ctrl+C to stop; you’ll wire it into a client in the next step.

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🔌 Configuring an MCP client

Claude Desktop

Edit %APPDATA%\Claude\claude_desktop_config.json (create it if it doesn’t exist):

{
  "mcpServers": {
    "solidworks": {
      "command": "python",