About Skills Janitor
Skills Janitor is a lightweight, open-source toolkit that audits, deduplicates, lints, fixes, and tracks Claude Code skills. It runs as simple bash and Python3 scripts with no dependencies and previews proposed changes before applying them.
Review
Skills Janitor targets developers who keep many Claude Code skills and want a quick way to see which ones are actually used, which overlap, and which point to missing files. It focuses on practical maintenance tasks via command-line utilities and produces weekly usage summaries plus estimated metrics for less explicit references.
Key Features
- Nine command-line actions for auditing, deduplication, linting, fixing, and tracking skills.
- Reads local Claude conversation history (e.g. ~/.claude-account-personal/history.jsonl) to compute explicit and estimated usage counts with weekly granularity.
- Duplicate detection that reports overlap percentage between similar skills.
- Previews all suggested changes before applying them; can be scripted (cron) for automated reports.
- Minimal setup: bash + python3, no external dependencies, MIT-licensed, and no telemetry.
Pricing and Value
Skills Janitor is free and distributed under the MIT license. Because it is open-source and dependency-free, it offers strong value for developers who run Claude Code locally: you get inspection and cleanup tooling at no monetary cost and can modify the scripts to fit specific workflows. For teams or users who prefer graphical tools or multi-platform integrations, additional effort may be required to adapt it into broader toolchains.
Pros
- Free, MIT-licensed, and open source with no tracking or telemetry.
- Very lightweight-bash and Python3 scripts with no extra dependencies.
- Accurate usage reporting by reading local conversation history and offering explicit vs estimated counts.
- Deduplication with overlap percentages helps reduce redundant skills and context bloat.
- Previews changes before applying them, reducing risk during cleanup.
Cons
- Tied to the Claude Code ecosystem and local history format, so it's less useful outside that setup.
- Command-line only; there is no GUI, which may be a barrier for non-technical users.
- Some convenience features (automatic cleanup thresholds, pre-install checks) are mentioned as planned but are not yet available.
Skills Janitor is best suited for developers and power users who maintain a large set of Claude Code skills and are comfortable with command-line tooling. It's a practical, low-friction option for reducing unused skills and duplicate commands, and its open-source nature makes it easy to extend for team-specific workflows.
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