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MCP Echo Server
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MCP Echo Server

A simple MCP echo server used to return the received text messages as they are.
Developer toolsCommunication tools#Echo service#MCP protocol#Message processing Local.TypeScript
2 points
10

What is the MCP Echo Server?

The MCP Echo Server is a simple server based on the Message Control Protocol (MCP). Its main function is to return any received text messages to the sender without any changes. This service is often used to test the connectivity and integrity of message transmission.

How to use the MCP Echo Server?

Using the MCP Echo Server is very simple. You just need to configure the server in your MCP environment and then send any text messages to it. The server will immediately return the same messages to you.

Use cases

The MCP Echo Server is very suitable for: - Testing MCP network connections - Verifying message transmission functions - Basic testing during debugging and development - Teaching and demonstrating the basic working principle of the MCP protocol

Main features

Message echoReturn any received text messages as they are without any modification or processing.

Advantages and limitations

Advantages
Simple and easy to use, no complex configuration required
Quick response, extremely low latency
Low resource consumption, stable operation
Limitations
Single function, only supports message echo
Does not support message storage or forwarding
No message verification or filtering function

How to use

Install dependencies
Make sure the Node.js environment is installed, and then run npm install to install the required dependencies.
Build the server
Run the build command to compile the server code.
Configure the MCP server
Declare the echo server in your MCP configuration file.
Start and use
After starting the MCP environment, you can send test messages to the echo server.

Usage examples

Basic function testSend a simple text message to test whether the server is working properly.
Special character testTest whether the server can correctly handle special characters.

Frequently Asked Questions

What message formats does the MCP Echo Server support?
How to confirm that the server is running?
Is there a message length limit for the server?

Related resources

Node.js official website
Download and documentation for the Node.js runtime environment.
MCP protocol specification
Detailed technical specification of the Message Control Protocol (MCP).
Installation
Copy the following command to your Client for configuration
{
  "mcpServers": {
    "echo-mcp-server": {
      "command": "node",
      "args": ["<absolute-path-to-project-folder>/dist/index.js"]
    }
  }
}
Note: Your key is sensitive information, do not share it with anyone.
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