CST Studio Orchestrator MCP

An open-source Model Context Protocol (MCP) server that turns CST Studio Suite into a unified AI-controllable simulation environment.

This project exposes CST Studio Suite to AI agents and automation clients. It supports 3D electromagnetic modeling, antenna and RF workflows, solver setup, result extraction, PCB/SI helpers, and direct CST Design Studio schematic control for field-circuit co-simulation through project.schematic.

Highlights

• 177 MCP tools for CST automation across modeling, antennas, materials, ports, mesh, solvers, simulation, results, PCB/SI, optimization, VBA, and schematic workflows.

• Connected mode on Windows with CST Python libraries for live control of CST Studio Suite.

• Offline mode for generating CST VBA scripts when CST is not available.

• Design Studio schematic tools for RLC components, external ports, net connections, schematic inspection, object discovery, and generic RemoteObject calls.

• Generic schematic bridge for CST's runtime project.schematic interface, including objects such as Block, Net, ExternalPort, CircuitProbe, SchematicLayout, SimulationTask, ParameterSweep, and Optimizer.

• Built-in CST VBA reference data and guardrails for raw VBA execution.

Related MCP server: COMSOL MCP Server

Why This Exists

Most CST automation examples focus on 3D Microwave Studio history commands. CST Design Studio and schematic workflows are less visible because schematic actions do not reliably appear in the 3D History List.

This fork adds a practical bridge for Design Studio:

project.schematic.Block
project.schematic.Net
project.schematic.ExternalPort
project.schematic.SchematicLayout

On CST Studio Suite 2025.2, the generic schematic tools can enumerate 125 project.schematic members and call methods on runtime remote objects directly.

Schematic Tools

Specialized tools:

• cst_schematic_create_rlc creates a resistor, inductor, or capacitor.

• cst_schematic_create_external_port creates a schematic external port.

• cst_schematic_connect connects block or port pins into a named net.

• cst_schematic_list lists schematic blocks and nets.

Generic bridge tools:

• cst_schematic_list_objects lists public members exposed by project.schematic.

• cst_schematic_object_methods lists methods on one schematic object.

• cst_schematic_call calls project.schematic.<object_name>.<method_name>(*args, **kwargs).

Example generic call:

{
  "object_name": "Block",
  "method_name": "GetNumberOfPorts",
  "args": []
}

Installation

git clone https://github.com/guardianer9-debug/cst-studio-orchestrator-mcp.git
cd cst-studio-orchestrator-mcp
pip install -e ".[dev]"

MCP Configuration

{
  "mcpServers": {
    "cst-studio-orchestrator": {
      "command": "cst-studio-orchestrator-mcp",
      "env": {
        "CST_PATH": "D:\\CST2025",
        "CST_WORK_DIR": "D:\\cst_projects",
        "PYTHONPATH": "D:\\CST2025\\AMD64\\python_cst_libraries"
      }
    }
  }
}

The legacy command names mcp-cst-studio and cst-field-circuit-mcp are also kept for compatibility.

Connected Mode

Connected mode requires:

• Windows

• CST Studio Suite installed

• CST Python libraries available on PYTHONPATH

• Python 3.10+

Example:

$env:PYTHONPATH="D:\CST2025\AMD64\python_cst_libraries;$env:PYTHONPATH"
python -c "import cst.interface; print('CST available')"
cst-studio-orchestrator-mcp

Offline Mode

When CST is unavailable, most modeling tools return VBA scripts that can be run manually in CST Studio Suite. The generic schematic reflection tools require connected mode because they depend on CST runtime remote objects.

Development

pip install -e ".[dev]"
pytest -q
ruff check src tests

Current local validation:

535 passed
ruff: All checks passed

Project Lineage

This project is derived from RFingAdam/mcp-cst-studio and keeps the original AGPL-3.0-or-later license. This fork adds CST Design Studio schematic automation and a generic project.schematic RemoteObject bridge for broader CST Studio Suite orchestration, including antennas, RF/EM workflows, PCB/SI, and field-circuit co-simulation.

See NOTICE for attribution details.

License

AGPL-3.0-or-later. CST Studio Suite itself is a separate commercial product from Dassault Systemes/SIMULIA and is not bundled or redistributed by this project.