WebSocket Enhancer MCP server for AI agents

The MCP WebSocket Server implements the Model Context Protocol (MCP) with WebSocket enhancements, allowing clients to make standard MCP requests while also receiving real-time updates through WebSocket subscriptions. This dual approach enables both traditional request-response patterns and push notifications when new data becomes available.

Installation

To install the MCP WebSocket Server:

Clone the repository:

git clone https://github.com/your-repo/mcp-websocket-server.git
cd mcp-websocket-server

Install the required dependencies:
```
pip install websockets mcp-sdk
```

Server Configuration

Starting the Server

Run the server with the following command:

python server.py

This will start both the MCP server on port 8080 and the WebSocket server on port 8765.

Client Interactions

Making MCP Requests

Clients can send standard MCP requests to the server at http://localhost:8080. Here's an example request:

{"method": "get_data"}

The server will respond with:

{"result": "Here is your data!"}

WebSocket Subscriptions

To receive real-time updates:

Connect to the WebSocket server at ws://localhost:8765
Subscribe to updates by sending:
```
{"action": "subscribe"}
```
Once subscribed, your client will automatically receive push notifications whenever new data becomes available

Server Features

Key Capabilities

Dual Server Architecture: Handles both standard HTTP requests (port 8080) and WebSocket connections (port 8765)
Push Notifications: Automatically notifies all subscribed clients when data changes
Efficient Processing: Uses asyncio for non-blocking operations and handling multiple connections simultaneously

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 "mcp-websocket" '{"command":"python","args":["server.py"]}'

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": {
        "mcp-websocket": {
            "command": "python",
            "args": [
                "server.py"
            ]
        }
    }
}

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": {
        "mcp-websocket": {
            "command": "python",
            "args": [
                "server.py"
            ]
        }
    }
}

3. Restart Claude Desktop for the changes to take effect