cst-studio-mcp

MCP serverCommunity

A 180-plus-tool CST server built on RFingAdam's project, using the CST Python API for solving and results and history VBA for modelling. By ismailakdag.

11 starsUpdated 4 days agoGitHub data from 5 Nov 2026

At a glance

Type: MCP server
Works with: CST Studio Suite
How it connects: Drives a running copy of the tool
Access: Can modify models
Tool versions: CST Studio Suite 2026 tested; result reader supports 2025 and 2026 files; 2024 to 2026 library layout detected
Operating systems: Windows
Needs a CST Studio Suite licence: Yes
Transport: Local (stdio)
AI clients documented: Claude Desktop, Claude Code, Cursor, Codex
Licence: AGPL-3.0-or-later
Language: Python

What it can do

Connects, opens projects, solves and reads results through cst.interface and cst.results, and writes geometry, materials, ports and monitors into the History List as VBA.
Adds one-shot workflows such as a patch antenna, solve plus S11, design reports and far-field metric discovery.
Auto-detects the CST install on any drive and the bundled python_cst_libraries folder.
Marks tools as read-only or destructive so clients can auto-approve reads and prompt for changes.
Falls back to returning VBA for manual paste when CST can't be reached.

Limitations

Windows 10 or 11 with a licensed CST install only.
The author says the full catalogue isn't a blanket check of advanced CST features; only core paths were tested on CST 2026.
AGPL licence obligations apply if you modify and redistribute or host it.

Install

git clone https://github.com/ismailakdag/cst-studio-mcp.git
cd cst-studio-mcp
python -m venv .venv
.\.venv\Scripts\Activate.ps1
pip install -U pip
pip install -e ".[dev]"

Source: github.com/ismailakdag/cst-studio-mcp

{
  "mcpServers": {
    "cst-studio": {
      "command": "cst-studio-mcp",
      "args": [],
      "env": {
        "CST_PATH": "C:\\Program Files\\CST Studio Suite 2026",
        "CST_WORK_DIR": "C:\\cst_projects",
        "CST_VERSION": "2026",
        "CST_CONNECT_MODE": "manual",
        "PYTHONPATH": "C:\\Program Files\\CST Studio Suite 2026\\AMD64\\python_cst_libraries",
        "CST_LOG_LEVEL": "INFO"
      }
    }
  }
}

Source: github.com/ismailakdag/cst-studio-mcp

MCP servers and skills run code on your computer. Review the source before installing.

AI-generated models, drawings and results must be checked by a qualified engineer before use.