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SolidWorks MCP Bridge

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{"type": "text"}# SolidWorks MCP Bridge 🌉 ⚙️

Server and integration bridge based on Model Context Protocol (MCP) to communicate local language models (via Ollama) with the SolidWorks COM API.

Allows LLMs such as qwen3:8b and qwen3:30b-a3b to inspect the design state, analyze the feature tree, read dimensions, query equations, extract physical mass properties, and export technical files in an automated and structured way.

🎯 Project Scope

  • Level 1 (Current Phase - Reading): Non-destructive inspection of parts, assemblies, dimensions, equations, mass, and FEA studies.

  • Level 2 (Future Phase - Editing): Parametric modification of dimensions, global variables, and controlled rebuild.

  • Level 3 (Future Phase - Generation): Creation of 2D/3D sketches, features, and automated macros.

Related MCP server: solidworks-mcp

📂 Project Structure

LOCAL LLM/
├── requirements.txt         # Dependencias Python (mcp, pywin32, pydantic, ollama, etc.)
├── pyproject.toml           # Configuración del paquete y testing
├── .env.example             # Plantilla de variables de entorno
├── .env                     # Configuración activa local
├── src/
│   └── sw_bridge/
│       ├── config.py         # Carga de configuración (pydantic-settings)
│       ├── logging_config.py # Logging estructurado JSON por sesión
│       ├── server.py         # Servidor MCP (fastmcp / stdio / sse)
│       ├── sw_connection/    # Conexión COM a SolidWorks
│       │   ├── connector.py  # Singleton y reconexión automática
│       │   ├── exceptions.py # Excepciones tipadas
│       │   └── models.py     # Modelos de datos Pydantic
│       └── tools/            # Herramientas de Nivel 1
│           ├── document_tools.py
│           ├── feature_tree_tools.py
│           ├── dimension_tools.py
│           ├── mass_props_tools.py
│           ├── export_tools.py
│           └── fea_tools.py
├── tests/                    # Pruebas automatizadas (pytest)
├── scripts/
│   ├── test_tool_calling.py  # Validación de llamadas a funciones con Ollama
│   └── smoke_test.py         # Smoke test contra SolidWorks
└── docs/                     # Especificaciones y resolución de problemas
    ├── alcance.md
    ├── tool_schemas.md
    └── troubleshooting.md

🚀 Installation and Setup

1. Activate the virtual environment

.\sw-mcp-env\Scripts\activate

2. Verify models in Ollama

Make sure you have the model with tool support available:

ollama list
ollama show qwen3:8b

3. Test Tool Calling with the local LLM

.\sw-mcp-env\Scripts\python scripts/test_tool_calling.py

4. Run Test Suite

.\sw-mcp-env\Scripts\pytest tests/ -v

5. Start the MCP Server (stdio Mode)

.\sw-mcp-env\Scripts\python -m sw_bridge.server --transport stdio

🛠️ Available Tools (Level 1)

Tool

Description

check_solidworks_status

Checks if SolidWorks is responding via COM.

get_active_document_info

Gets type, path, configurations, and saved state.

list_open_documents

Lists all documents loaded in the session.

get_feature_tree

Extracts the complete feature tree (FeatureManager).

get_feature_details

Inspects definition and parameters of a feature.

list_dimensions

Lists numeric dimensions of the model or a feature.

get_equations

Reads equations and global variables from the equation manager.

get_mass_properties

Calculates mass (kg), volume, center of gravity, and inertia.

export_step

Exports the active model to neutral STEP format.

export_pdf

Exports the 2D drawing or active view to PDF.

export_screenshot

Saves a high-resolution screenshot in PNG format.

list_simulation_studies

Lists finite element analysis (FEA) studies.

get_simulation_study_results

Queries von Mises stresses and safety factors.

⚙️ Configuration as MCP Server in Antigravity / Claude Desktop

Add the following configuration to your MCP client:

{
  "mcpServers": {
    "solidworks-bridge": {
      "command": "C:\\Users\\said\\Desktop\\LOCAL LLM\\sw-mcp-env\\Scripts\\python.exe",
      "args": ["-m", "sw_bridge.server", "--transport", "stdio"],
      "cwd": "C:\\Users\\said\\Desktop\\LOCAL LLM"
    }
  }
}

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Maintenance

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