Aspen Plus MCP (aspen-mcp)

MCP serverCommunity

75 COM tools for Aspen Plus V15: parameter changes, runs, columns, reactions and convergence checks. By ddtlxc001.

7 starsUpdated 4 months 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: Aspen Plus V15 (GUI 41.0 / 40.0)
Operating systems: Windows
Needs a Aspen Plus licence: Yes
Transport: Local (stdio)
AI clients documented: Reasonix, Claude Desktop, VS Code
Licence: MIT
Language: Python

What it can do

Meant for a flowsheet you lay out in the GUI; it then changes block and stream inputs, runs sensitivity sweeps, reruns the case and reads stream and block results.
Can also add and connect blocks and streams, add components, switch the property method and set up power-law, LHHW and equilibrium reaction sets.
Has RadFrac tools for stages, pressure profile, condenser and reboiler type, feed and product stages, and side duties, plus tear-stream estimates and FSplit fractions.
Scans for unfilled inputs, reads block convergence status and searches a built-in knowledge base of convergence fixes; ships parameter notes for 70 block types.

Limitations

Windows only, through Aspen's COM interface; the README is written in Chinese.
Holds a single Aspen session; restarting the MCP client loses the open case.
The README warns that some COM errors leave Aspen in a bad state and need the file closed and reopened, and that reaction coefficient tables sometimes need filling by hand.

Install

cd aspen-mcp
python -m venv venv
venv\Scripts\pip install -e .
venv\Scripts\aspen-mcp

Source: github.com/ddtlxc001/aspen-mcp#安装给同学用

{
  "mcpServers": {
    "aspen-mcp": {
      "command": "path\\to\\aspen-mcp\\venv\\Scripts\\python.exe",
      "args": ["-m", "aspen_mcp.server"]
    }
  }
}

Source: github.com/ddtlxc001/aspen-mcp

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