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Hello World MCP Server

Source

A simple Hello World MCP server example

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Overview

Hello World MCP Server is a simple Multi-Cloud Protocol (MCP) server that responds with "Hello, World!" to any request, serving as an example for developers.

To use the Hello World MCP Server, clone the repository, install the dependencies using npm install, and start the server with npm start.

  • Simple implementation of an MCP server - Responds with a standard "Hello, World!" message - Easy to set up and use for demonstration purposes
  1. Learning how to set up a basic MCP server
  2. Testing multi-cloud communication protocols
  3. Serving as a template for more complex server implementations

Add to your AI client

Use these steps to connect Hello World MCP Server in Cursor, Claude, VS Code, and other MCP-compatible apps. The same JSON appears in the Use with menu above for one-click copy.

Cursor

Add this to your .cursor/mcp.json file in your project root, then restart Cursor.

.cursor/mcp.json

{
  "mcpServers": {
    "hello-world-mcp-server-arnab0831": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-hello-world-mcp-server-arnab0831"
      ]
    }
  }
}

Claude Desktop

Add this server entry to the mcpServers object in your Claude Desktop config, then restart the app.

~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows)

{
  "mcpServers": {
    "hello-world-mcp-server-arnab0831": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-hello-world-mcp-server-arnab0831"
      ]
    }
  }
}

Claude Code

Add this to your project's .mcp.json file. Claude Code will detect it automatically.

.mcp.json (project root)

{
  "mcpServers": {
    "hello-world-mcp-server-arnab0831": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-hello-world-mcp-server-arnab0831"
      ]
    }
  }
}

VS Code (Copilot)

Add this to your .vscode/mcp.json file. Requires the GitHub Copilot extension with MCP support enabled.

.vscode/mcp.json

{
  "servers": {
    "hello-world-mcp-server-arnab0831": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-hello-world-mcp-server-arnab0831"
      ]
    }
  }
}

Windsurf

Add this to your Windsurf MCP config file, then restart Windsurf.

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "hello-world-mcp-server-arnab0831": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-hello-world-mcp-server-arnab0831"
      ]
    }
  }
}

Cline

Open Cline settings, navigate to MCP Servers, and add this server configuration.

Cline MCP Settings (via UI)

{
  "mcpServers": {
    "hello-world-mcp-server-arnab0831": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-hello-world-mcp-server-arnab0831"
      ]
    }
  }
}

FAQ

What is an MCP server?

An MCP server is designed to facilitate communication across multiple cloud platforms.

Is this server suitable for production use?

No, this is a simple example server meant for educational purposes and should not be used in production environments.

How can I customize the response?

You can modify the response in the server code to return different messages.

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