Create, rewrite, or audit Claude Code custom slash commands (.claude/commands/*.md) as light, consistent, reusable prompts with systematic steps, argument hints, and routing to the best installed skills. Use whenever the user wants a new /command, says "make a slash command for X", "turn this workflow/prompt into a command", "add a command that runs Y", wants to fix or tighten an existing command file, or asks how to structure command frontmatter (arguments, argument-hint, allowed-tools). Not for creating skills (SKILL.md) — use anthropics-skill-creator for that.