Echo MCP Server

A simple Model Context Protocol (MCP) server that echoes back whatever message it is sent. Perfect for testing MCP functionality

Features

• Simple echo functionality that returns any message sent to it
• Handles empty messages, special characters, emojis, and long messages
• Includes test suite

Available Tools

• echo: Takes a message parameter and echoes it back exactly as received

Installation

git clone https://github.com/Garoth/echo-mcp.git
cd echo-mcp
npm install

Configuration

Add the echo server to your Cline MCP settings file inside VSCode’s settings (ex. ~/.config/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json):

{
  "mcpServers": {
    "echo-server": {
      "command": "node",
      "args": ["/path/to/echo-server/build/index.js"],
      "disabled": false,
      "autoApprove": [
        "echo"
      ]
    }
  }
}

Usage Examples

Basic Echo

Input: "Hello, world!"
Output: "Hello, world!"

Special Characters

Input: "Special chars: !@#$%^&*()_+{}[]|\:;"'<>,.?/"
Output: "Special chars: !@#$%^&*()_+{}[]|\:;"'<>,.?/"

Emojis

Input: "Message with emojis:    "
Output: "Message with emojis:    "

Development

Running Tests

The tests verify the echo functionality works correctly with various types of input:

npm test

Building

npm run build

License

MIT