Dev Environment Skill

"Works on my machine" is a solved problem. Consistent environments across the team eliminate entire classes of bugs and onboarding friction.

When to Activate

• Setting up a new project's development environment (/setup-dev)
• Onboarding a new developer
• Debugging "it works on CI but not locally" problems
• Standardizing the team's Node/Python/Go version
• Setting up pre-commit hooks for automatic quality checks
• Configuring a Dev Container so the project opens identically in VS Code and GitHub Codespaces
• Running local email testing with Mailpit so email flows can be verified without a real SMTP server

Runtime Version Pinning (mise)

mise (formerly rtx) manages Node, Python, Go, Java, and 200+ other runtimes per-project: