AspenPlus MCP Server

MCP serverCommunity

Opens, runs and edits Aspen Plus files over COM on Windows, reading and writing values by tree path. By brack101.

37 starsUpdated 1 year agoGitHub data from 5 Nov 2026

At a glance

Type: MCP server
Works with: Aspen Plus
How it connects: Drives a running copy of the tool
Access: Can modify models
Tool versions: Not stated in its documentation
Operating systems: Windows
Needs a Aspen Plus licence: Yes
Transport: Local (stdio)
AI clients documented: Claude Desktop
Licence: MIT
Language: Python

What it can do

Opens a .bkp simulation, runs it, and gets or sets any value by its variable-tree path, such as a stream temperature or a component flow.
An optional enhanced mode adds and deletes blocks, adds streams, connects them to block ports and saves the file.
Names Mixer, Heater, Flash2, RadFrac, DSTWU, RPlug, RCSTR and RYield as the supported block types.

Limitations

Windows only, because it drives Aspen Plus through its COM interface; you need your own Aspen Plus installation.
A small tool set (five basic tools, five more in enhanced mode); everything else goes through raw tree paths, so you need to know Aspen's node names.
The README doesn't state which Aspen Plus versions were tested.

Install

cd AspenPlus-MCP-Server
python -m venv venv
pip install -e .

Source: github.com/brack101/AspenPlus-MCP-Server#installation

{
  "mcpServers": {
    "aspenplus": {
      "command": "C:\\path\\to\\AspenPlus-MCP-Server\\venv\\Scripts\\python.exe",
      "args": [
        "-m",
        "aspenplus_mcp.server"
      ]
    }
  }
}

Source: github.com/brack101/AspenPlus-MCP-Server#configuration-with-claude-desktop

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.