skill-isolation-tester

Test Claude Code skills in Git worktree, Docker, and VM isolation environments.

7|3|Updated Oct 19, 2025
One-click install
npx skills add https://github.com/cskiro/annex --skill skill-isolation-tester
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: skill-isolation-tester
Source: https://github.com/cskiro/annex/tree/main/skills/skill-isolation-tester
Command: npx skills add https://github.com/cskiro/annex --skill skill-isolation-tester

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill spins up isolated environments (git worktree, Docker, VM) to validate Claude Code skills and catch environment-specific bugs, hidden dependencies, and ensure cleanups.

Core Features & Use Cases

  • Multi-mode isolation: Git worktree, Docker, VM
  • Risk-based auto-detection: selects isolation level based on skill risk
  • Test templates & reports: provides production-ready templates and structured reports
  • Safe testing: prevents contamination of your main environment

Quick Start

Phrases like:

  • "test skill my-skill in isolation"
  • "test in docker"
  • "test in worktree"

Frequently Asked Questions about skill-isolation-tester

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I test Claude Code skills in isolated environments to catch bugs?

Testing skills in isolation means running them in separate Git worktrees, Docker containers, or VMs to detect environment-specific bugs and hidden dependencies before they reach production. This Skill automates that process, capturing baseline state, executing your skill, verifying cleanup, and generating reports.

What's the difference between Git worktree, Docker, and VM isolation for skill testing?

Git worktree creates lightweight branch copies on your machine; Docker provides containerized sandboxes; VMs offer full system isolation. This Skill auto-selects the appropriate level based on detected risk, letting you test safely without contaminating your main environment.

Can I automate risk detection and cleanup verification when testing skills?

Yes. This Skill performs pre-flight risk checks, automatically selects isolation mode, captures baseline state before execution, enforces cleanup afterward, and detects side effects. It validates that your skill leaves no unwanted artifacts.

What testing output formats does skill isolation testing provide?

Testing generates production-ready reports in JSON, JUnit XML, and Markdown formats, so results integrate with CI/CD pipelines, test runners, and documentation workflows.

Do I need Docker or a VM to test skills in isolation?

No. This Skill supports three modes: Git worktree (lightweight, local), Docker (containerized), and VM (full isolation). It recommends the appropriate level automatically based on skill risk assessment.

How do I detect hidden dependencies in my Claude Code skills?

Running skills in isolated environments reveals dependencies the skill depends on but wasn't explicitly declared. Baseline capture and side-effect detection expose files created, environment variables set, or external services called during execution.