OntoLedgy DWSIM Interop Services

MCP serverCommunity

A Windows server that loads DWSIM in-process for flashes, flowsheets, sensitivity studies and reports. By OntoLedgy.

4 starsUpdated 2 months agoGitHub data from 5 Nov 2026

At a glance

Type: MCP server
Works with: DWSIM
How it connects: Drives a running copy of the tool
Access: Can modify models
Tool versions: Tested against a DWSIM v9.0.5-mcp build; other DWSIM versions may cause runtime issues
Operating systems: Windows
Needs a DWSIM licence: No
Transport: Local (stdio), Remote (HTTP)
AI clients documented: Claude Desktop, Claude Code, VS Code (GitHub Copilot), Codex
Licence: AGPL-3.0
Language: Python, C#

Runs DWSIM's .NET Framework engine inside the Python server process through pythonnet, with no DWSIM window; each MCP session gets its own flowsheet.
Tools for sessions and case files, compounds, property packages and binary interaction parameters, streams and unit operations, solving, and TP, PH and PS flashes.
Sensitivity analysis, parameter sweeps and optimisation runs, with export to CSV, JSON and generated reports.
A PowerShell installer sets up the tool, can download the tested DWSIM build, and configures Claude Code, Codex and VS Code Copilot; `dwsim-mcp doctor` checks the setup.

Windows only (Windows 10/11, or Windows Server with Desktop Experience); Linux isn't supported and macOS is being explored.
Tested against one DWSIM build; pointing it at a different DWSIM install may cause runtime errors.
Python 3.11 or 3.12 only (the PyPI package requires below 3.13).
AGPL-3.0 licensed, with a separate commercial licence offered for OntoLedgy's own code.

irm https://raw.githubusercontent.com/OntoLedgy/ol_dwsim_interop_services/develop/install.ps1 | iex

pipx install ol-dwsim-mcp-server
# or
uv tool install ol-dwsim-mcp-server

{
  "mcpServers": {
    "dwsim": {
      "command": "dwsim-mcp",
      "args": ["run"]
    }
  }
}

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.