Use for math calculations.
Use for date/time.
Rules to minimize token usage
Native macOS built-in screen capture. Saves directly to ~/Desktop using exact system timestamp naming, so agent can automatically detect and read the latest screenshot without manual file paths. macOS only.
Maintain a living context document (plan.md) as a self-note to preserve the original agenda, track progress, and prevent context drift during complex tasks
A meta-skill to create new skills in the default skill directory with proper YAML front matter
A skill for reliably creating files using shell commands
Edit files using efficient Unix command-line tools instead of rewriting entire files