How do I install the Cisco Gns3 skill?

Run npx skillmds@latest add bradmccloskey/cisco-gns3 in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Cisco Gns3 safe to use?

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Is Cisco Gns3 free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Cisco Gns3?

bradmccloskey (@bradmccloskey) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Cisco Gns3 by bradmccloskey — Agent Skill

Name: Cisco Gns3
Author: bradmccloskey

File contents

GNS3 Lab Automation Scripts

Write Python scripts for managing GNS3 Cisco lab environments. Follow these standards:

Capabilities

Topology Management via GNS3 REST API

Create/delete projects
Add/remove nodes (routers, switches, firewalls)
Create/delete links between nodes
Start/stop/suspend nodes
Export and import topologies

Lab Provisioning

Bootstrap device configs via console (telnetlib or netmiko to console port)
Push initial configs to all devices in a topology
Reset lab to known-good baseline state
Clone topologies for parallel testing

Lab Testing Workflows

Build topology → push configs → run tests → collect results → tear down
Compare behavior across different IOS versions
Pre/post change validation in lab before production

GNS3 API Basics

# GNS3 server API (default: http://localhost:3080)
# GET  /v2/projects                  - list projects
# POST /v2/projects                  - create project
# GET  /v2/projects/{id}/nodes       - list nodes
# POST /v2/projects/{id}/nodes       - create node
# POST /v2/projects/{id}/links       - create link
# POST /v2/projects/{id}/nodes/{id}/start  - start node

Libraries to Use

requests for GNS3 REST API
telnetlib or netmiko for console access to devices
time / asyncio for boot wait and polling
yaml for topology definitions
jinja2 for config templates

Topology Definition Format (YAML)

project_name: ospf-lab
nodes:
  - name: R1
    template: "Cisco IOSv"
    console_port: 5001
    config: configs/r1.cfg
  - name: R2
    template: "Cisco IOSv"
    console_port: 5002
    config: configs/r2.cfg
links:
  - endpoints: ["R1:Gi0/1", "R2:Gi0/1"]
    subnet: 10.0.12.0/30

Output Requirements

Report node status (started/stopped)
Show console port mappings for manual access
Log all API calls for debugging
Support idempotent operations (re-run safely)

---name: cisco-gns3description: Generate Python scripts for managing GNS3 lab topologies and automating Cisco lab environments. Use when the user wants to build, manage, or automate GNS3 labs for testing Cisco configurations.---## GNS3 Lab Automation ScriptsWrite Python scripts for managing GNS3 Cisco lab environments. Follow these standards:### Capabilities#### Topology Management via GNS3 REST API- Create/delete projects- Add/remove nodes (routers, switches, firewalls)- Create/delete links between nodes- Start/stop/suspend nodes- Export and import topologies#### Lab Provisioning- Bootstrap device configs via console (telnetlib or netmiko to console port)- Push initial configs to all devices in a topology- Reset lab to known-good baseline state- Clone topologies for parallel testing#### Lab Testing Workflows- Build topology → push configs → run tests → collect results → tear down- Compare behavior across different IOS versions- Pre/post change validation in lab before production### GNS3 API Basics```python# GNS3 server API (default: http://localhost:3080)# GET /v2/projects - list projects# POST /v2/projects - create project# GET /v2/projects/{id}/nodes - list nodes# POST /v2/projects/{id}/nodes - create node# POST /v2/projects/{id}/links - create link# POST /v2/projects/{id}/nodes/{id}/start - start node```### Libraries to Use- `requests` for GNS3 REST API- `telnetlib` or `netmiko` for console access to devices- `time` / `asyncio` for boot wait and polling- `yaml` for topology definitions- `jinja2` for config templates### Topology Definition Format (YAML)```yamlproject_name: ospf-labnodes: - name: R1 template: "Cisco IOSv" console_port: 5001 config: configs/r1.cfg - name: R2 template: "Cisco IOSv" console_port: 5002 config: configs/r2.cfglinks: - endpoints: ["R1:Gi0/1", "R2:Gi0/1"] subnet: 10.0.12.0/30```### Output Requirements- Report node status (started/stopped)- Show console port mappings for manual access- Log all API calls for debugging- Support idempotent operations (re-run safely)

Frequently asked questions

Cisco Gns3