Skills Janitor
9 commands to audit, fix, and prune your Claude Code skills
Most Claude Code power users accumulate skills the way developers accumulate browser tabs — compulsively, with the vague sense that they'll need them later. Skills Janitor is the tool that finally holds up a mirror: as of your last session, 4 of your 36 installed skills are actually doing anything. Built by Krzysztof Hendzel as a personal itch-scratcher, Skills Janitor installs as a zero-dependency Claude Code plugin and gives you nine focused slash commands: /janitor-audit for a full inventory, /janitor-duplicates to spot overlapping functionality, /janitor-check for broken configs, /janitor-fix with dry-run defaults, and /janitor-usage which parses your conversation history to surface which skills you've actually invoked. It's blunt in the best way. The safety model is smart: destructive actions require confirmation, marketplace-sourced skills are never auto-modified, and everything defaults to preview mode first. The tool also ships /janitor-search and /janitor-compare for benchmarking your installed skills against GitHub alternatives — so you can replace a broken skill before deleting it. At 18 GitHub stars and just three weeks old, this is a genuine indie utility. It won't change your life, but if you've ever wondered why Claude Code "forgot" a skill you swore you installed, this is where you start.
Panel Reviews
“Every Claude Code power user I know has a graveyard of half-working skills they installed three months ago and forgot. This tool does the unglamorous work of auditing that pile. The usage tracking via conversation history parsing is the killer feature — it doesn't ask you to remember what you used, it checks.”
“Eighteen stars and zero tests on a tool that auto-modifies your Claude Code skills configuration. The dry-run default is reassuring, but 'safe preview mode' and 'modifies your installed skills' shouldn't appear in the same sentence without a proper backup mechanism. Wait for v0.2.”
“This is the beginning of a skill ecosystem problem that's going to get a lot worse. As Claude Code skills marketplaces multiply, the cognitive load of managing installed capabilities will become its own full-time job. Tools like this will be as essential as package managers are today.”
“I ran /janitor-usage on my setup and felt personally attacked by the output. Zero out of twelve skills touched in the last month. But that's exactly the point — this thing tells you the truth, and truth is what good tools do.”