MCP Server for CST Studio Suite

A Model Context Protocol (MCP) server providing AI-driven access to CST Studio Suite for antenna design, RF/microwave simulation, and PCB layout.

Features

• 170 tools across 20 categories: geometry, materials, ports, boundaries, mesh, solvers, simulation, results, parameters, antenna templates, arrays, matching networks, diagnostics, optimization, PCB, and more
• Dual-mode operation: Connected mode (direct CST execution on Windows) and Offline mode (VBA script generation on any OS)
• 13 parametric antenna templates: Patch, dipole, monopole, horn, Yagi, helix, Vivaldi, slot, IFA, PIFA, spiral, bowtie — with automatic dimension calculations from target frequency
• PCB/SI tools: Stackup creation, trace routing with impedance calculation, via modeling, ground planes
• Material database: 30+ metals, dielectrics, and RF substrates with accurate electromagnetic properties
• VBA injection prevention: All generated VBA passes through security validation
• CST VBA reference: Built-in help system for CST VBA objects and methods

Installation

pip install mcp-cst-studio

Or from source:

git clone https://github.com/RFingAdam/mcp-cst-studio.git
cd mcp-cst-studio
pip install -e ".[dev]"

Configuration

Claude Code (.mcp.json)

{
  "mcpServers": {
    "cst-studio": {
      "command": "mcp-cst-studio",
      "env": {
        "CST_PATH": "C:\\Program Files\\CST Studio Suite 2026",
        "CST_WORK_DIR": "C:\\cst_projects"
      }
    }
  }
}

Environment Variables

Usage

Offline Mode (Any OS)

Works without CST installed. Tools generate VBA scripts that can be executed in CST Studio Suite.

"Design a 2.4 GHz rectangular patch antenna on FR-4 substrate"
→ Returns calculated dimensions + complete VBA script for CST

Connected Mode (Windows with CST)

When the CST Python library is available, tools execute directly:

"Create the antenna, run the time-domain simulation, and show me the S-parameters"
→ Builds geometry, configures solver, runs simulation, extracts results

Tool Categories