Pcapy-ng

MCP server exposing pcapy-ng packet capture functionality.

PyPI Python Ruff

mcp-name: io.github.daedalus/mcp-pcapy-ng

Install

pip install mcp-pcapy-ng

Usage

The MCP server provides tools for network packet capture using pcapy-ng:

from mcp_pcapy_ng import mcp
mcp.run()

Or via command line:

mcp-pcapy-ng

Available Tools

• findalldevs - List all available network interfaces
• lookupdev - Get the default network device
• open_live - Open a live network interface for packet capture
• open_offline - Open a pcap file for reading
• create - Create a packet capture handle
• compile - Create a BPF filter program
• pcap_read - Read packets from a pcap handle
• pcap_datalink - Get the data link type
• pcap_setfilter - Attach a BPF filter
• pcap_getnonblock - Get non-blocking status
• pcap_setnonblock - Set non-blocking mode
• get_dlt_names - Get DLT constant mappings
• get_pcap_directions - Get direction constant mappings
• get_constants - Get all constants

Development

git clone https://github.com/daedalus/mcp-pcapy-ng.git
cd mcp-pcapy-ng
pip install -e ".[test]"

# run tests
pytest

# format
ruff format src/ tests/

# lint
ruff check src/ tests/

# type check
mypy src/