mcp-server-node

Overview

This MCP server demonstrates how to build a custom server in JavaScript using Node.js, featuring two tools: 'add' for mathematical operations and 'getApiKey' for retrieving environment variables. The server includes proper input validation using Zod and supports standard I/O transport for seamless integration with AI-assisted environments like Cursor IDE.

Try asking AI

After installing, here are 5 things you can ask your AI assistant:

• add

  Takes two numeric inputs and returns their sum

  Try:add 3 and 5Try:what is 7 plus 12?
• getApiKey

  Retrieves the API key from the API_KEY environment variable

  Try:what is my API key?Try:get my API key

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Installation

git clone <repository_url>
cd <repository_directory>

npm install

npm run inspector

{
  "mcpServers": {
    "node-mcp-server": {
      "command": "node",
      "args": ["/path/to/mcp-server-node/mcp-server.js"],
      "env": {
        "API_KEY": "your-api-key"
      }
    }
  }
}

FAQ

What is the purpose of this MCP server?

This server demonstrates how to build an MCP server in Node.js with custom tools and prompts, serving as an educational example for developers looking to extend AI environments with custom functionality.

How do I integrate this with Cursor IDE?

Add the server configuration to Cursor's settings under Tools & Integrations, specifying the node command, path to mcp-server.js, and any required environment variables like API_KEY.

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