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pt-visual-mcp

pt-visual-mcp is a skill for Claude Code, Codex from lyf94697-droid/packet-tracer-visual-mcp. It costs 82 tokens per session (1,692 once invoked), scanned A, original, MIT.

A guide and tool connection for Cisco Packet Tracer, a program used to build and practise computer-network configurations visually. It supports network labs, router commands, and topology work.

In plain words
What is it for?
Use it to build network topologies, generate IOS configurations for routing, DHCP, ACLs, and NAT, or demonstrate network faults and repairs.
Why use it?
It reduces the manual work of creating teaching labs and entering common Cisco configurations, while checking that the Packet Tracer connection is available first.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Codex.

not rated 1repo 4mo ago A scan 82 tokens original MIT

Good fit Use it to build network topologies, generate IOS configurations for routing, DHCP, ACLs, and NAT, or demonstrate network faults and repairs.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/lyf94697-droid/packet-tracer-visual-mcp/skill
View source ↗ lyf94697-droid/packet-tracer-visual-mcp
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 lyf94697-droid/packet-tracer-visual-mcp --skill skill
Clone the repo
git clone --depth 1 https://github.com/lyf94697-droid/packet-tracer-visual-mcp

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 pt-visual-mcp

README.md
[![agentmods](https://agentmods.dev/badge/skills/lyf94697-droid/packet-tracer-visual-mcp/skill/github.svg)](https://agentmods.dev/skills/lyf94697-droid/packet-tracer-visual-mcp/skill)
Your own site
<a href="https://agentmods.dev/skills/lyf94697-droid/packet-tracer-visual-mcp/skill"><img src="https://agentmods.dev/badge/skills/lyf94697-droid/packet-tracer-visual-mcp/skill/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 pt-visual-mcp

Your own site · 80×15
<a href="https://agentmods.dev/skills/lyf94697-droid/packet-tracer-visual-mcp/skill"><img src="https://agentmods.dev/badge/skills/lyf94697-droid/packet-tracer-visual-mcp/skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 82 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,692 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.
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 $0.00082 $0.01692
Opus 5.5 $0.00033 $0.00677
Sonnet 5.5 $0.00016 $0.00338
Haiku 4.5 $0.00008 $0.00169

Measured 1mo ago against content hash 6ad815413c9c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

pt-visual-mcp 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.

skill/SKILL.md · 136 lines

How it starts

The opening of the file, as written. The whole thing — 136 lines — stays where its author put it; the contents beside it link to each section on GitHub.

PT Visual MCP

This skill drives the original packet-tracer-visual-mcp toolchain: a local MCP server plus a Packet Tracer extension bridge. It is optimized for Packet Tracer lab generation, IOS automation, course-design topologies, and optional visual topology building.

Default local checkout on this machine: E:\mc\packet-tracer-visual-mcp.

Before Acting

  1. Check whether the MCP tool list contains ptv_bridgeStatus.
  2. If it is missing, tell the user the PT Visual MCP tools are not loaded and ask them to restart Codex after adding the MCP config.
  3. If it is loaded, call ptv_bridgeStatus first.
  4. If the bridge is not connected, ask the user to open Packet Tracer and choose Extensions > PT Visual MCP.
  5. If the Packet Tracer menu is missing, tell the user to import and run extension\packet-tracer-visual-mcp-script-engine.js from this project.

Main Workflow

For IOS automation:

  1. Use ptv_generateIosTemplate for reusable static route, RIP, OSPF, EIGRP, DHCP pool, ACL, or NAT/PAT command blocks.
  2. Use ptv_generateCampusIosConfig to preview a complete campus config set.
  3. Use ptv_applyCampusIosConfig only after the topology exists and the bridge is connected.
  4. Use ptv_applyIosConfigSet when applying a custom config set.

For validation:

  1. Use ptv_validateCampusFast by default. It keeps validation quick by checking plan shape, build/apply results, one optional canvas snapshot, key devices, and link count.
  2. Use ptv_generateCampusValidationPlan with validationMode: "standard" or "strict" only when the user explicitly wants slower IOS command checks.
  3. Use ptv_runShowCommands and ptv_getCommandLog for targeted deep checks; do not claim full show-output parsing unless Packet Tracer exposes it.
  4. For Server-PT DNS/Web/FTP graphical service toggles, call ptv_probeServerServices first if the user wants automation. Treat services as manual unless the probe reveals stable DNS/HTTP/FTP setter APIs.

For fault demos:

  1. Call ptv_getFaultLibrary to list supported faults.
  2. Call ptv_injectFault with apply: false first if the user wants to preview commands.
  3. Call ptv_injectFault with apply: true to break the lab intentionally.
  4. Call ptv_repairFault with apply: true to restore the lab.

Read the full file on GitHub · 136 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 First seen · 136 lines · 82 tokens per session scan A 6ad815413c9c

Subscribe to this mod's changes

pt-visual-mcp is a skill published in the GitHub repository lyf94697-droid/packet-tracer-visual-mcp (1 stars, last pushed 4mo ago), licensed MIT. It adds 82 tokens to every session and 1,692 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 2026-08-31.

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