Inventory all currently installed skills and plugins. Shows what's in ~/.claude/skills/ (global) and .claude/skills/ (project), with descriptions from each SKILL.md. Cross-references with enabled plugins from settings.json. Use when you want to know what skills/plugins are available in the current environment.
Triggers: "what skills do I have", "list my skills", "what plugins are installed", "show installed skills", "what commands are available", "/find-skills"
