Open Skill Sunset
Description
Local, read-only audit for stale AGENTS.md, CLAUDE.md, and generic SKILL.md instructions.
Installation
This entry records only its repository, not the path inside it, so there is no
exact command to give. Open the source below and copy the folder into
~/.claude/skills/, or the file into ~/.claude/agents/.
README
Skill Sunset
[](https://github.com/ooocooc/open-skill-sunset/actions/workflows/ci.yml) [](https://www.npmjs.com/package/skill-sunset) [](https://www.npmjs.com/package/skill-sunset) [](LICENSE)
[English](README.md) | [简体中文](README.zh-CN.md)
Your `AGENTS.md` only grows. Which rules are still earning their context?
Skill Sunset is a local, read-only retirement audit for `AGENTS.md`, `CLAUDE.md`, and generic `SKILL.md` instructions. It separates verified breakage and duplicates from unproven “this rule is obsolete” hypotheses. `TEST` is not `RETIRE`.
npx skill-sunset@latest audit --codex --open
No global installation is required. No source edits. No AI API. No model quota. No provider credentials.
**Third-party integration:** [HOL Guard v3.0.18](https://github.com/hashgraph-online/hol-guard/releases/tag/v3.0.18) includes a command-safety extension for the installed `skill-sunset audit` surface. [View the merged integration](https://github.com/hashgraph-online/hol-guard/pull/2611).
If Skill Sunset saves you one risky cleanup pass, [star the repository](https://github.com/ooocooc/open-skill-sunset). If a verdict is wrong, [share a redacted counterexample](https://github.com/ooocooc/open-skill-sunset/issues/new?template=false-positive.yml).

The screenshot comes from a real report generated by the current CLI from `test/fixtures/sample-setup`: 5 files scanned, 11 findings, with duplicate retirement, stale-reference updates, progressive disclosure, and behavior hypotheses shown separately. [Op
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