Plutocalcdesigner Mcp

io.github.danpeigPublished by GitHub account danpeigv2.5.1Updated Oct 24, 2026

Plutocalc Designer is a software suite for water and wastewater treatment plants design

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Overview

AI-generated overview

MCP server for Plutocalc Designer that lets an assistant list water and wastewater treatment design models, fetch templates and run sizing calculations.

What you can do
Check server version, status and license credit balance, and get license help information. List available calculation models, with or without detailed information and manuals. Retrieve a model's name, version, details, input template, reference database entries, units list and manual link. Run a model calculation from a JSON input and get the completed design results. Convert model templates between JSON and readable Markdown.
When to use it
Useful for engineers working on water and wastewater treatment plant design who want an assistant to browse Plutocalc Designer models, prepare calculation inputs and run sizing computations without switching to the web tool.
Requirements
The README points to a hosted HTTP endpoint, while the manifest describes a local stdio process; the local option needs Node.js, npm and internet access to the Plutocalc Designer API. A license key is required for the license credit check and likely for calculations.
Before you install
Calculations consume license credits, so running models may use paid balance. The server forwards design inputs to the Plutocalc Designer API over the internet. Treat the license key as a secret and check credit balance before bulk runs.

Installation

In SourceWeft

  1. Open Plutocalcdesigner Mcp in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

Plutocalc Designer MCP Server

MCP server for the Plutocalc Designer REST API, providing access to water and wastewater treatment system design tools through the Model Context Protocol.

Registry Name: io.github.danpeig/plutocalcdesigner-mcp
Version: 2.5.1
MCP server URL: https://www.plutocalc.com/designer/mcp
OpenAPI specs: https://www.plutocalc.com/designer/server/openapi.json

About Plutocalc Designer

Plutocalc Designer is an online engineering tool for sizing water and wastewater treatment systems. Engineers select a design model, fill in a calculation template, and run the computation to receive a completed template with design results. Learn more at https://www.plutocalc.com/designer.


Using Plutocalc Designer from your AI platform

There are three ways of connecting Plutocalc Designer to AI applications:

  • Connecting via the MCP server (recommended)
  • Connecting directly to the API using OpenAPI specs (alternative)
  • Hosting your own instance of the MCP server (for developers)

Connecting via the MCP server (automatic)

The easiest way to use Plutocalc Designer with your AI assistant is through the MCP Registry:

  1. In Claude Desktop or your MCP-compatible client, search for:

    plutocalcdesigner-mcp

    or

    io.github.danpeig/plutocalcdesigner-mcp
  2. Click "Add" or "Install" - The server will be automatically configured.

  3. Start using it! Ask your AI assistant:

    • "List available wastewater treatment models"
    • "Get the template for the stripping tower"
    • "Help me design a biological treatment system"

Connecting via the MCP server (manual)

If you need to configure manually, add this to your MCP client configuration:

For Claude Desktop (claude_desktop_config.json):

json
{  "mcpServers": {    "plutocalcdesigner": {      "url": "https://www.plutocalc.com/designer/mcp",      "transport": "http"    }  }}

For other MCP clients:

  • Server URL: https://www.plutocalc.com/designer/mcp
  • Transport Type: HTTP
  • Name: plutocalcdesigner (or any name you prefer)

Connecting directly to the API using the OpenAPI specifications

Another way to connect AI models to Plutocalc Designer is use the API directly. In this case, the model can retrieve instructions from the OpenAPI json specifications available at https://www.plutocalc.com/designer/server/openapi.json

A more detailed description of the API with instructions and examples, suitable for humans or LLMs, can be found in: https://www.plutocalc.com/designer/api.html

Hosting the MCP server

This method hosts the MCP server only, not the Plutocalc Designer. The local server requires internet connectivity to connect to the Plutocalc Designer API.

Use this method if you are facing connectivity issues with Plutocalc Designer MCP server or for development purposes.

bash
# Clone the repositorygit clone https://github.com/danpeig/plutocalcdesigner-mcp.gitcd plutocalcdesigner-mcp
# Install dependenciesnpm install
# Start the servernpm start

The server will start on port 3003 by default (configurable via PORT environment variable).

If you need to check if the server is working, see TEST_CLIENT_README.md for detailed instructions.

Available tools

  1. server_version - Get Plutocalc Designer server version string
  2. server_status - Get Plutocalc Designer server status
  3. license_status - Check license credits balance (requires licenseKey)
  4. list_models - List available calculation models
  5. list_models_info - List available models with detailed information including manuals (recommended starting point)
  6. get_model - Get model name and version (requires model)
  7. get_model_information - Get detailed model information (requires model)
  8. get_model_template - Get calculation input template (requires model)
  9. get_model_referencedb - Get reference database entries (requires model)
  10. get_model_unitslist - Get supported units list (requires model)
  11. compute_model - Run model calculation (requires model and input)
  12. json_to_markdown - Convert model JSON template to readable Markdown format (requires model and input)
  13. markdown_to_json - Convert Markdown format back to JSON template (requires model and input)
  14. model_manual - Get URL to the model help/manual page (requires model)
  15. license_help - Get information about license key requirements

Contact

Source: README.md at commit 510afc7

Tools

0
SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

1
  1. v2.5.1LatestSep 16, 2026

Score

40% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 days25 pts

    Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.

  • Auth declared10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts

    Declare a license in the repository or the registry entry.