MCP Network Sentinel

@takeaship

Repository

Basic information

About MCP Network Sentinel

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

#network-monitoring #security #mcp-servers

MCP Network Sentinel config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "mcp-network-sentinel": {
      "command": "npx",
      "args": [
        "@takeaship/mcp-network-sentinel",
        "your-mcp-server-package arg1 arg2",
        "--output=network-logs.json"
      ]
    }
  }
}

MCP Network Sentinel tools

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Overview

What is MCP Network Sentinel?

MCP Network Sentinel is a network monitoring tool for MCP servers that logs all network activities to help identify potential security issues. It integrates with Node.js network modules (net, tls, http, https, dns) to intercept outgoing connections and is intended for users who want to check if a third-party MCP server is transmitting data or access keys to external sources.

How to use MCP Network Sentinel?

Install the package globally with npm install -g @takeaship/mcp-network-sentinel, then run it by wrapping your MCP server command in the sentinel: npx @takeaship/mcp-network-sentinel "your-mcp-server-package arg1 arg2" --output=network-logs.json. The --output (or -o) flag is optional and saves logs to a specified JSON file.

Key features of MCP Network Sentinel

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
Uses Node.js module interception transparently

Use cases of MCP Network Sentinel

Auditing a third-party MCP server for suspicious outbound connections
Verifying that a custom MCP server does not leak confidential data
Testing if an MCP server connects to unknown or unauthorized hosts
Compliance monitoring for data access in MCP-based workflows

Frequently asked questions

What kind of network activity does MCP Network Sentinel monitor?

It monitors all outgoing network activity from MCP servers, including connection attempts, HTTP/HTTPS requests, and DNS lookups.

Does MCP Network Sentinel modify the behavior of my MCP server?

No, it only intercepts calls to network modules (net, tls, http, https, dns) and logs the details, running the server transparently in a monitored environment.

What are the runtime requirements?

MCP Network Sentinel requires Node.js. It is installed as a global npm package (`@takeaship/mcp-network-sentinel`).

Can I save the logs to a file for later analysis?

Yes, use the `-o` or `--output` option to specify a JSON file path for the logs.

How does MCP Network Sentinel work under the hood?

It uses Node.js module interception to hook into network-related modules and log all outgoing connections, then runs the MCP server command inside that monitored context.

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