SWMM-MCP

MCP serverCommunity

An MCP toolbox for SWMM that inspects, edits and runs models through pyswmm and plots results in the chat. By kLabUM (University of Michigan).

8 starsUpdated 5 months agoGitHub data from 5 Nov 2026

At a glance

Type: MCP server
Works with: EPA SWMM
How it connects: Reads and writes files; the tool isn't needed
Access: Can modify models
Tool versions: SWMM engine bundled with pyswmm 2.0.1 or later
Operating systems: Not stated in its documentation
Needs a EPA SWMM licence: No
Transport: Local (stdio)
AI clients documented: Claude Desktop
Licence: MIT
Language: Python

What it can do

Lists and duplicates models, and reads input file sections, report sections and output variables.
Replaces a junction with a cylindrical storage node, changes circular conduit diameters and sets a 24-hour SCS Type II design storm.
Runs a model and returns report and output data for comparison between scenarios.
Includes UI apps for model upload, time-series plots, rainfall plots and an interactive network map, plus ready-made prompts.

Limitations

Edits are limited to storage, conduit diameter and design storm changes.
Clone-and-run only, with no published package; needs Python 3.12 and uv.

Install

uv sync

Source: github.com/kLabUM/SWMM-MCP-PUB#setup

{
  "mcpServers": {
    "SWMM": {
      "command": "uv",
      "args": [
        "run",
        "--directory",
        "/<path/to/directory>/SWMM-MCP",
        "server.py"
      ]
    }
  }
}

Source: github.com/kLabUM/SWMM-MCP-PUB#usage

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.