| name | skill-cleaner |
| description | Audit installed Agent Skills for duplicate copies, unused candidates, oversized descriptions, loaded roots, and prompt-budget pressure. Use when cleaning or debugging skill collections across common agent runtimes. |
| license | MIT |
| compatibility | Requires Node.js 18 or newer. Usage-history analysis currently supports Codex and OpenClaw logs. |
Skill Cleaner
Use this when trimming skill prompt budget, finding duplicate skills, auditing enabled/disabled skill roots, or deciding which skills/plugins to remove.
Workflow
- Resolve this skill's directory from the loaded
SKILL.md, then run its bundled analyzer:
node ./scripts/skill-cleaner.mjs --no-logs
Useful variants:
node ./scripts/skill-cleaner.mjs --months 3
node ./scripts/skill-cleaner.mjs --months 6 --max-log-mb 800 --deep-logs
node ./scripts/skill-cleaner.mjs --context-tokens 200000 --budget-percent 2 --no-logs
node ./scripts/skill-cleaner.mjs --root /path/to/another/skills-directory --no-logs
node ./scripts/skill-cleaner.mjs --json --no-logs
- Read the report in this order:
Skill Budget: GPT-5.5 context size, 2% skills budget, Codex-budgeted usage, and pre-budget full-list pressure.Description candidates: long descriptions where relaxed grammar saves prompt budget.Duplicates: same skill name or near-identical description/body across Codex, plugin cache, repo siblings, and personal skill roots.Unused candidates: no recent $skill mention, SKILL.md read, or explicit skill-use trace in recent Codex/OpenClaw logs.Root summary: where skills came from and whether config marks them disabled.
- Before deleting or editing:
- Verify the kept copy exists and is loaded.
- Treat cross-runtime duplicates as informational: separate runtimes may legitimately need separate copies.
- Never delete managed plugin-cache files directly; use the runtime's plugin manager.
- Delete a suggested duplicate only after verifying the kept path exists and the same runtime loads it.
- Keep repo-local OpenClaw maintainer skills when they encode repo policy or live operations.
- Preserve trigger nouns in descriptions: product, tool, action, object.
Analyzer Notes
- The script mirrors Codex's model-visible line shape:
- name: description (file: path).
- It applies Codex-like frontmatter rules: YAML frontmatter only, default name from parent dir, single-line sanitized
name and description.
- It follows Codex
core-skills/src/render.rs: 2% of raw context_window, token cost ceil(utf8_bytes / 4), then full descriptions -> equal description truncation -> omitted minimum lines.
- It reads
~/.codex/models_cache.json for the selected model's context_window; fallback is 200,000 tokens and 2%. Pass --context-tokens for an exact budget.
- It scans common global roots for
.agents, Pi, Codex, Claude Code, OpenCode, and OpenClaw, plus skill roots in the current project and its ancestors.
- Extra folders are included only with repeatable
--root <path> flags.
- It realpath-dedupes roots, so agent-specific symlinks to a shared skill directory do not create false duplicates.
- For duplicate names, it reports description/body similarity and suggests deletion candidates only when bodies are near copies. Keep priority defaults to direct Codex system skills, then direct Codex skills, then plugin skills, then personal/repo copies.
- It scans
~/.codex/history.jsonl and recent ~/.codex/sessions/**/*.jsonl by default. Add --deep-logs for archived sessions and common OpenClaw/Clawd log folders.
- Usage evidence is heuristic:
$skill, Use $skill, and paths like skills/<name>/SKILL.md.
Privacy and Output Policy
- Scanning stays local. The report emits paths and usage counts, not session contents.
- Use
--no-logs unless the user wants usage-history analysis.
- Reports can contain usernames and local paths; review them before sharing.
- Suggest first; edit only when the user asks.
- If asked to apply cleanup, make small grouped commits: descriptions, deletes, config disables.
- Do not delete ignored/untracked skill dirs without naming the destination or confirming they are disposable.
