agentmods.dev

cml-packet-capture

cml-packet-capture is a skill for Claude Code, Codex from automateyournetwork/netclaw. It costs 64 tokens per session (1,643 once invoked), scanned A, original, Apache-2.0.

A packet-capture tool for Cisco Modeling Labs, a virtual network lab environment. It saves network traffic as pcap files, which can be inspected in tools such as Wireshark.

In plain words
What is it for?
Starting and stopping captures on lab links, checking capture status, listing captures, downloading pcap files, and analyzing BGP or OSPF traffic.
Why use it?
It provides recorded evidence when diagnosing how network protocols are behaving, instead of relying only on logs or assumptions.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 717repo +9 changed 1mo ago A scan SkillSpector: pass 64 tokens original Apache-2.0

Good fit Starting and stopping captures on lab links, checking capture status, listing captures, downloading pcap files, and analyzing BGP or OSPF traffic.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/automateyournetwork/netclaw/cml-packet-capture
View source ↗ automateyournetwork/netclaw
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add automateyournetwork/netclaw --skill cml-packet-capture
Clone the repo
git clone --depth 1 https://github.com/automateyournetwork/netclaw

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for cml-packet-capture

README.md
[![agentmods](https://agentmods.dev/badge/skills/automateyournetwork/netclaw/cml-packet-capture/github.svg)](https://agentmods.dev/skills/automateyournetwork/netclaw/cml-packet-capture)
Your own site
<a href="https://agentmods.dev/skills/automateyournetwork/netclaw/cml-packet-capture"><img src="https://agentmods.dev/badge/skills/automateyournetwork/netclaw/cml-packet-capture/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for cml-packet-capture

Your own site · 80×15
<a href="https://agentmods.dev/skills/automateyournetwork/netclaw/cml-packet-capture"><img src="https://agentmods.dev/badge/skills/automateyournetwork/netclaw/cml-packet-capture.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,643 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00064 $0.01643
Opus 5.5 $0.00026 $0.00657
Sonnet 5.5 $0.00013 $0.00329
Haiku 4.5 $0.00006 $0.00164

Measured 1mo ago against content hash 90bcefed1879, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cml-packet-capture scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

workspace/skills/cml-packet-capture/SKILL.md · 147 lines

How it starts

The opening of the file, as written. The whole thing — 147 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CML Packet Capture

MCP Server

  • Command: cml-mcp (pip-installed, stdio transport)
  • Requires: CML_URL, CML_USERNAME, CML_PASSWORD environment variables

Available Tools

Packet Capture Operations

Tool Parameters What It Does
start_capture lab_id/lab_title, link_id, max_packets?, pcap_filter? Start capturing packets on a link
stop_capture lab_id/lab_title, link_id Stop an active capture
get_capture_status lab_id/lab_title, link_id Check capture status (running, packet count)
download_capture lab_id/lab_title, link_id, file_path? Download the captured pcap file
list_captures lab_id/lab_title List all active and completed captures in a lab

Workflow: Capture and Analyze (Full Pipeline)

When a user says "capture traffic between R1 and R2 and analyze it":

  1. Find the link: Use get_links (from cml-topology-builder) to find the link ID between R1 and R2
  2. Start capture: start_capture with optional filter (e.g., "icmp", "tcp port 179")
  3. Generate traffic: Tell the user to generate traffic (or use execute_command to ping)
  4. Stop capture: stop_capture after sufficient traffic is collected
  5. Download pcap: download_capture to save the pcap file locally
  6. Analyze with Packet Buddy: Hand off to the packet-analysis skill:
    • pcap_summary — overview
    • pcap_protocol_hierarchy — protocol breakdown
    • pcap_conversations — who talked to whom
    • pcap_expert_info — errors, retransmissions
    • pcap_filter — drill into specific traffic
  7. Report findings: Summarize the analysis in plain English

Workflow: Targeted Protocol Capture

When troubleshooting a specific protocol:

BGP Troubleshooting

1. start_capture with pcap_filter="tcp port 179"
2. Wait for BGP events (or trigger with clear ip bgp)
3. stop_capture
4. download_capture
5. Analyze: Look for OPEN, KEEPALIVE, UPDATE, NOTIFICATION messages
6. Check for: hold timer expiry, capability mismatch, prefix limit exceeded

Read the full file on GitHub · 147 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago Changed 90bcefed1879
  2. 1mo ago Changed · +5 lines 88b026841e55
  3. 2mo ago First seen · 142 lines · 64 tokens per session scan A 7512564ca4ef

Subscribe to this mod's changes

cml-packet-capture is a skill published in the GitHub repository automateyournetwork/netclaw (717 stars, last pushed yesterday), licensed Apache-2.0. It adds 64 tokens to every session and 1,643 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

DebuggingWiresharkcapturecmlpcaptroubleshooting
Related

cml-packet-capture compared with skills from other repositories

cml-packet-capture next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
cml-packet-captureautomateyournetwork/netclawSkill717yesterdayApache-2.0A64Claude Code, Codex
analyzing-network-traffic-with-wiresharkmukul975/Anthropic-Cybersecurity-SkillsSkill36k2mo agoApache-2.0B49Claude Code
analyzing-network-traffic-with-wiresharkkillvxk/cybersecurity-skills-zhSkill576mo agoApache-2.0B58Claude Code
analyzing-network-traffic-with-wireshark26zl/cybersec-toolkitSkill936d agoMITB49Claude Code
analyzing-network-traffic-with-wiresharkandycungkrinx91/konohaSkill62todayMITB49Claude Code, Codex
analyzing-network-traffic-of-malwareautohandai/community-skillsSkill133mo agoApache-2.0A81Claude Code, Codex
analyzing-network-traffic-of-malwareYoungmaidainon/Agent-Level-UpSkill42mo agoMITA81Claude Code, Codex