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gns3

gns3 is an MCP server for Claude Code from ChistokhinSV/gns3-mcp. Its token cost is not measured, scanned A, original, MIT.

A local MCP server configuration for GNS3. It lets a coding agent connect to a GNS3 server using the server's host, port and login settings.

In plain words
What is it for?
Use it when configuring an agent to access GNS3 projects, devices and network-lab operations through the bundled Python server.
Why use it?
It supplies the connection details needed for the agent to work with a GNS3 installation without manually wiring up each connection.

MCP server for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: listed in a Claude config.

Part of the gns3-lab plugin — 1 skill, 1 MCP server shipped together

not rated 16repo +1 changed 3d ago A scan tokens not measured original MIT

Good fit Use it when configuring an agent to access GNS3 projects, devices and network-lab operations through the bundled Python server.

Compare 6 mcp servers from other repositories ↓
Install with agentmods
npx agentmods add mcp/chistokhinsv/gns3-mcp/gns3
View source ↗ ChistokhinSV/gns3-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.

Clone the repo
git clone --depth 1 https://github.com/ChistokhinSV/gns3-mcp

Made for: Claude Code.

Or install gns3-lab, the plugin that ships this one along with the rest of its 1 skill, 1 MCP server.

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 gns3

README.md
[![agentmods](https://agentmods.dev/badge/mcp/chistokhinsv/gns3-mcp/gns3/github.svg)](https://agentmods.dev/mcp/chistokhinsv/gns3-mcp/gns3)
Your own site
<a href="https://agentmods.dev/mcp/chistokhinsv/gns3-mcp/gns3"><img src="https://agentmods.dev/badge/mcp/chistokhinsv/gns3-mcp/gns3/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 gns3

Your own site · 80×15
<a href="https://agentmods.dev/mcp/chistokhinsv/gns3-mcp/gns3"><img src="https://agentmods.dev/badge/mcp/chistokhinsv/gns3-mcp/gns3.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
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.
Security

Grade A, and why

gns3 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 3d 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.

plugin/.mcp.json · 14 lines

What it actually says

{
  "gns3": {
    "command": "uvx",
    "args": [
      "[email protected]"
    ],
    "env": {
      "GNS3_HOST": "${user_config.gns3_host}",
      "GNS3_PORT": "${user_config.gns3_port}",
      "GNS3_USER": "${user_config.gns3_user}",
      "GNS3_PASSWORD": "${user_config.gns3_password}"
    }
  }
}
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. 3d ago Changed e903463265aa
  2. 4d ago First seen · 14 lines scan A 3ee57aa44910

Subscribe to this mod's changes

gns3 is an MCP server published in the GitHub repository ChistokhinSV/gns3-mcp (16 stars, last pushed 3d ago), licensed MIT. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. 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 2026-11-03.

DevOps and cloudgns3gns3-apigns3-appliancemcpmcp-server
Related

gns3 compared with mcp servers from other repositories

gns3 next to 6 mcp servers from other repositories
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gns3ChistokhinSV/gns3-mcpMCP server163d agoMITA—Claude Code
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seotrendsmcp-ai/Trends-MCPMCP server464d agoMITA—Claude Code, Codex, Cursor, Gemini CLI, OpenCode
google-search-console-mcpsurendranb/google-search-console-mcpMCP server409d agoMITA—Claude Code, Cursor