Agent skill
repo-hygiene
Detect and clean AI-generated slop from skills directories. Use when: (1) test-skill-* directories accumulate from testing, (2) CLAUDE.md has stale skill references, (3) placeholder content exists in skills. Provides scan, clean, and CLAUDE.md sync.
Install this agent skill to your Project
npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/data/repo-hygiene
SKILL.md
Repo Hygiene
Detect and clean AI-generated slop (test skills, placeholder content) from your project.
Quick Start
# Scan for slop
skills hygiene scan
# Scan including package subdirectories
skills hygiene scan -r
# Preview what would be deleted
skills hygiene clean --dry-run
# Actually delete slop
skills hygiene clean --confirm
What is Slop?
Slop is auto-generated or placeholder content that shouldn't be committed:
| Pattern | Example | Action |
|---|---|---|
test-skill-* |
test-skill-1234567890 |
Delete |
| Timestamped | my-skill-1706625000000 |
Review |
_temp_* |
_temp_claude-svelte5-skill |
Review (may need rename) |
| Placeholder | "NEW content with improvements!" | Delete |
Detection Patterns
test-skill-* (Auto-Delete)
Skills matching /^test-skill-\d+$/ are auto-generated test data.
These are always safe to delete.
Timestamped Names (Review)
Skills ending with 13-digit timestamps (-1706625000000) may be
auto-generated. Review before deleting.
temp Prefix (Review)
Skills starting with _temp_ were likely created as temporary work.
They may contain valuable content that needs proper naming.
Recommended action: Rename to remove prefix if content is valuable, or delete if it's truly temporary.
Placeholder Content (Auto-Delete)
Skills containing these patterns are incomplete:
# Test Skill(exact match)NEW content with improvements!
Slop Locations
The scan checks these locations:
.claude/skills/- Root project skillspackages/*/\.claude/skills/- Package-level skills (with-r)
CLAUDE.md Cleanup
The scan also checks CLAUDE.md for:
- Stale references: Skills listed but not installed
- Duplicate references: Same skill listed multiple times
Run skills claudemd sync to fix CLAUDE.md references.
Workflow
Daily Cleanup
After testing or development:
skills hygiene scan
skills hygiene clean --confirm
skills claudemd sync
Pre-Commit Check
Add to your workflow:
# Check for slop before committing
skills hygiene scan
if [ $? -ne 0 ]; then
echo "Slop detected! Run: skills hygiene clean --confirm"
exit 1
fi
Decision Tree
Found test-skill-*?
├─ YES → Delete (safe)
└─ NO
├─ Found _temp_* with good content?
│ └─ Rename to proper name, delete _temp_ version
├─ Found placeholder content?
│ └─ Delete or rewrite
└─ Found stale CLAUDE.md refs?
└─ Run: skills claudemd sync
Safety
--dry-runshows what would happen without changes--confirmis required for actual deletion_temp_*skills are never auto-deleted (review required)- Timestamped skills are flagged for review, not auto-deleted
Related Commands
skills validate- Check skill qualityskills claudemd sync- Sync CLAUDE.md with installed skillsskills list- Show installed skills
Skill Chaining
Works with:
- skill-maker: Create clean skills to replace slop
- claudeception: Extract learnings before deleting temp skills
- workflow-orchestrator: Include hygiene in project workflow
Terminal Chain (Always Run Last)
This skill runs after testing workflows complete:
| After Skill | Cleanup Needed |
|---|---|
| tdd | test-skill-* directories |
| suggest-tests | Analysis artifacts |
| unit-test-workflow | Generated test stubs |
| property-based-testing | Fast-check artifacts |
| doc-maintenance | Stale references |
| gitignore-hygiene | Final verification |
When any testing skill completes, run:
skills hygiene scanskills hygiene clean --confirm(if slop detected)
Testing Pipeline Position
repo-hygiene is the terminal step in the testing pipeline:
tdd → suggest-tests → unit-test-workflow → property-based-testing → repo-hygiene
↑
(TERMINAL)
All testing workflows should end with repo-hygiene to ensure clean state.
Feature Completion Flow
In feature completion contexts, repo-hygiene chains to doc-maintenance:
feature done → dogfood-skills → repo-hygiene → doc-maintenance
After cleanup, doc-maintenance updates PLAN.md to mark tasks complete.
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