Interactive guide to undo Git changes using a decision tree. Automatically analyzes repository state (git status, git log) and recommends the exact command based on the situation. Asks for confirmation before executing destructive commands. Use when: user says "undo git", "git undo", "deshacer git", "revert changes", "undo changes", "undo commit", "unstage files", "discard changes", "undo last commit", "revert changes", "deshacer cambios", "revertir cambios", "quitar del staging", "descartar cambios", or invokes /git-undo.
Expert guide for designing, reviewing, and improving AI agent skills. Use when creating a new skill, auditing an existing skill for quality, refactoring a skill that underperforms, or when the user asks about "skill best practices", "how to write a good skill", "improve my skill", "skill review", "skill quality", "buenas prácticas skills", "mejorar skill", "revisar skill", "skill description tips", "skill anti-patterns". Covers: effective descriptions, expert knowledge transfer, anti-pattern lists, progressive disclosure, decision trees, freedom calibration, and executable examples.
Analyze Claude Code session token usage and estimate costs. Use when the user asks: "how many tokens", "token cost", "cuántos tokens", "cuánto costó", "token usage", "session cost", "coste de la sesión", "tokens gastados", "tokens del proyecto", "total tokens", "/token-cost", or wants to know the token consumption or estimated USD cost of the current, a previous, or all sessions in the project.