MRP Calculator MCP server

This MCP server provides tools for Material Requirements Planning (MRP) calculations, following the Model Context Protocol to expose functionality for delivery schedule calculation, order need determination, and MRP period calculations.

Installation

Prerequisites

• Node.js installed on your system

Installation Steps

# Install dependencies
npm install

# Build the server
npm run build

Configuration

Configure the MRP Calculator server in your MCP settings file:

{
  "mcpServers": {
    "mrp": {
      "command": "node",
      "args": ["/path/to/mrp-calculator/dist/index.js"],
      "env": {}
    }
  }
}

Make sure to update the path in the args field to point to the correct location of the built server on your system.

Running the Server

After installation and configuration, run the server using:

node dist/index.js

Available Tools

calculate_order_need

This tool calculates when and how much to order based on various inputs.

Parameters:

• Current inventory levels
• Forecast periods
• Delivery schedules
• Order constraints

Usage Example:

When integrated with an MCP client, you can call the tool with parameters similar to:

// Example of calling the calculate_order_need tool through an MCP client
const result = await mcpClient.runTool("mrp.calculate_order_need", {
  currentInventory: 500,
  forecastPeriods: [
    { period: "2023-07", demand: 300 },
    { period: "2023-08", demand: 350 },
    { period: "2023-09", demand: 400 }
  ],
  deliverySchedule: {
    leadTime: 14, // days
    minOrderQuantity: 100
  },
  orderConstraints: {
    maxOrderSize: 1000,
    orderMultiple: 50
  }
});

The response will contain information about when orders should be placed and in what quantities to meet the forecasted demand while respecting the specified constraints.

How to install this MCP server

For Claude Code

To add this MCP server to Claude Code, run this command in your terminal:

claude mcp add-json "mrp" '{"command":"node","args":["/path/to/mrp-calculator/dist/index.js"],"env":[]}'

See the official Claude Code MCP documentation for more details.

For Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > Tools & Integrations and click "New MCP Server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "mrp": {
            "command": "node",
            "args": [
                "/path/to/mrp-calculator/dist/index.js"
            ],
            "env": []
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explicitly ask the agent to use the tool by mentioning the tool name and describing what the function does.

For Claude Desktop

To add this MCP server to Claude Desktop:

1. Find your configuration file:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json
• Linux: ~/.config/Claude/claude_desktop_config.json

2. Add this to your configuration file:

{
    "mcpServers": {
        "mrp": {
            "command": "node",
            "args": [
                "/path/to/mrp-calculator/dist/index.js"
            ],
            "env": []
        }
    }
}

3. Restart Claude Desktop for the changes to take effect