Masscan MCP

Masscan MCP is a bridge that connects Masscan, the ultra-fast port scanner, with the Model Context Protocol (MCP) ecosystem.

Overview

Masscan MCP enables seamless integration of Masscan's high-speed network scanning capabilities into MCP-compatible applications and AI-powered workflow systems. This bridge allows you to leverage Masscan functionality through a standardized protocol, making it easier to incorporate into automated security testing pipelines or AI assistant capabilities.

Features

• Full Masscan functionality exposed through MCP
• Simple configuration and setup
• Easy integration with other MCP-compatible tools and systems
• Standardized input/output handling

Installation

Prerequisites

• Node.js (v16 or higher)
• Masscan installed on your system

Installation

# Install globally
npm install -g gc-masscan-mcp

# Or run directly without installing
npx gc-masscan-mcp

Configuration

This server requires the path to the Masscan executable to be set via the MASSCAN_PATH environment variable.

Example:

# Linux/macOS
export MASSCAN_PATH=/usr/local/bin/masscan

# Windows
set MASSCAN_PATH=C:\path\to\masscan\masscan.exe

Usage

Command Line

# With MASSCAN_PATH environment variable set
npx gc-masscan-mcp

With Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "masscan": {
      "command": "npx",
      "args": ["-y", "gc-masscan-mcp"],
      "env": {
        "MASSCAN_PATH": "C:\\path\\to\\masscan\\masscan.exe"
      }
    }
  }
}

With Other MCP Clients

For other MCP clients, you can configure them to use this server with:

MASSCAN_PATH=/path/to/masscan npx gc-masscan-mcp

Running Masscan

Once configured, you can run Masscan through the MCP interface using the do-masscan tool:

// Example of calling Masscan through MCP
const result = await mcp.tools.invoke("do-masscan", {
  target: "192.168.1.0/24",
  port: "80,443,8080"
});

Parameters

Masscan MCP currently supports two main parameters:

• target: IP address or range to scan (e.g., "192.168.1.1", "10.0.0.0/24")
• port: Port or port ranges to scan (e.g., "80", "22-25", "80,443,8080")

Examples

Scan a Single Host

const result = await mcp.tools.invoke("do-masscan", {
  target: "192.168.1.1",
  port: "1-65535"
});

Integration with AI Assistants

Masscan MCP is designed to work seamlessly with AI assistants that support the Model Context Protocol, enabling natural language interactions for security testing tasks.

Example conversation with an AI assistant:

User: Scan my local network 192.168.1.0/24 for web servers
AI: I'll help you scan your network for web servers using Masscan.

[AI uses Masscan MCP to run the scan and returns the results]

Masscan has found the following open web ports:
- 192.168.1.5:80
- 192.168.1.10:443
- 192.168.1.15:8080
...

Security Considerations

• Always obtain proper authorization before scanning networks
• Use responsibly and ethically
• Be aware that Masscan is designed for speed and may generate significant network traffic
• Consider using slower scan rates in production environments

Troubleshooting

If you encounter issues:

1. Verify Masscan is properly installed and accessible
2. Check the path to the Masscan executable in your configuration
3. Ensure proper permissions are set for execution (Masscan typically requires root/administrator privileges)
4. Review server logs for detailed error messages

License

Apache-2.0

Acknowledgments

• Masscan Project: https://github.com/robertdavidgraham/masscan
• Model Context Protocol: https://github.com/modelcontextprotocol