MCP Network Sentinel

A network monitoring tool for MCP servers that logs all network activities to help identify potential security issues.

Background

When using third-party MCP servers to access confidential data, there's a risk that the MCP server might transmit your data or access keys to external sources. This tool monitors all network communications from the MCP server to help identify any suspicious activities.

Installation

npm install -g @takeaship/mcp-network-sentinel

Usage

npx @takeaship/mcp-network-sentinel "your-mcp-server-package arg1 arg2" --output=network-logs.json

Features

Monitors all network activity from MCP servers
Logs connection attempts, HTTP/HTTPS requests, and DNS lookups
Writes logs to console and optionally to a JSON file
Runs your MCP server within a monitored environment

How It Works

MCP Network Sentinel uses Node.js module interception to hook into the network-related modules and log all outgoing connections. It works by:

Intercepting calls to network modules (net, tls, http, https, dns)
Logging connection details including destination, port, and protocol
Running your MCP server command in a monitored environment
Saving logs to a JSON file if specified

Options

-o, --output <file> - Save network logs to a specified JSON file

License

MIT