Quality Checker Skill

Purpose

Single responsibility: Validate Claude skill packages for quality, completeness, and standards compliance before upload. (BP-4)

Grounding Checkpoint (Archetype 1 Mitigation)

Before executing, VERIFY:

• Skill directory exists
• SKILL.md is present
• Quality criteria are defined
• Validation scope is clear (quick/full/custom)

DO NOT validate without defining quality criteria.

Uncertainty Escalation (Archetype 2 Mitigation)

ASK USER instead of guessing when:

• Quality threshold unclear (strict vs lenient)
• Custom validation rules needed
• Failures found - block or warn?
• Edge cases in validation logic

NEVER auto-pass quality checks without proper validation.

Context Scope (Archetype 3 Mitigation)

Quality Dimensions

Workflow Steps

Step 1: Structure Validation (Grounding)

# Required files
SKILL_DIR="output/<skill-name>"

# Check SKILL.md
test -f "$SKILL_DIR/SKILL.md" && echo "✅ SKILL.md present" || echo "❌ SKILL.md missing"

# Check references directory
test -d "$SKILL_DIR/references" && echo "✅ references/ present" || echo "❌ references/ missing"

# Check at least one reference file
ls "$SKILL_DIR/references/"*.md >/dev/null 2>&1 && \
  echo "✅ Reference files present" || echo "❌ No reference files"

# Check for index
test -f "$SKILL_DIR/references/index.md" && \
  echo "✅ Index present" || echo "⚠️ No index.md (recommended)"

Step 2: SKILL.md Content Validation

SKILL_MD="output/<skill-name>/SKILL.md"

# Required sections
echo "=== Section Check ==="
grep -q "^# " "$SKILL_MD" && echo "✅ Title present" || echo "❌ Missing title"
grep -q "^## Description\|^## Purpose" "$SKILL_MD" && echo "✅ Description present" || echo "❌ Missing description"

# Recommended sections
grep -q "^## Quick Reference\|^## Overview" "$SKILL_MD" && echo "✅ Quick reference" || echo "⚠️ No quick reference"
grep -q "^## Code Examples\|^## Examples" "$SKILL_MD" && echo "✅ Examples section" || echo "⚠️ No examples section"
grep -q "^## Navigation\|^## Contents" "$SKILL_MD" && echo "✅ Navigation" || echo "⚠️ No navigation"

# Content quality
echo ""
echo "=== Content Metrics ==="
echo "Lines: $(wc -l < "$SKILL_MD")"
echo "Code blocks: $(grep -c '```' "$SKILL_MD")"
echo "Sections: $(grep -c '^## ' "$SKILL_MD")"
echo "Links: $(grep -oE '\[.*\]\(.*\)' "$SKILL_MD" | wc -l)"

Step 3: Code Example Validation

SKILL_MD="output/<skill-name>/SKILL.md"

# Extract code blocks
echo "=== Code Examples ==="
example_count=$(grep -c '```' "$SKILL_MD")
echo "Total code blocks: $((example_count / 2))"

# Check for language tags
tagged=$(grep -c '```[a-z]' "$SKILL_MD")
echo "Language-tagged blocks: $tagged"

# Check code isn't just placeholders
placeholder_count=$(grep -E '```\n(# placeholder|// TODO|pass)\n```' "$SKILL_MD" | wc -l)
echo "Placeholder blocks: $placeholder_count"

# Minimum requirement: 3 real code examples
real_examples=$((example_count / 2 - placeholder_count))
if [ "$real_examples" -ge 3 ]; then
  echo "✅ Sufficient code examples ($real_examples)"
else
  echo "⚠️ Few code examples ($real_examples, recommend 3+)"
fi

Step 4: Reference Quality Validation

REF_DIR="output/<skill-name>/references"

echo "=== Reference Files ==="
for file in "$REF_DIR"/*.md; do
  if [ -f "$file" ]; then
    lines=$(wc -l < "$file")
    name=$(basename "$file")
    if [ "$lines" -lt 10 ]; then
      echo "⚠️ $name: $lines lines (sparse)"
    else
      echo "✅ $name: $lines lines"
    fi
  fi
done

# Total reference content
total_lines=$(cat "$REF_DIR"/*.md 2>/dev/null | wc -l)
echo ""
echo "Total reference content: $total_lines lines"

Step 5: Generate Quality Report

# Quality Report: <skill-name>

## Summary
- Overall Score: XX/100
- Status: PASS/WARN/FAIL

## Structure (25/25)
- [x] SKILL.md present
- [x] references/ directory
- [x] Reference files present
- [ ] Optional: scripts/, assets/

## Content (30/35)
- [x] Title present
- [x] Description clear
- [x] Quick reference
- [ ] FAQ section (missing)

## Code Examples (15/20)
- [x] 5 code examples
- [x] Language tags
- [ ] Example diversity (all Python)

## Documentation (18/20)
- [x] Navigation table
- [x] Links work
- [ ] Version info missing

## Recommendations
1. Add FAQ section based on common questions
2. Include examples in other languages
3. Add version/last updated info

Recovery Protocol (Archetype 4 Mitigation)

On error:

1. PAUSE - Complete partial validation
2. DIAGNOSE - Check error type:
   • File not found → Check path
   • Parse error → Check file format
   • Script error → Simplify validation
3. ADAPT - Adjust validation scope
4. RETRY - With corrected parameters (max 3 attempts)
5. ESCALATE - Report partial results

Checkpoint Support

State saved to: .aiwg/working/checkpoints/quality-checker/

checkpoints/quality-checker/
├── structure_results.json
├── content_results.json
├── code_results.json
├── docs_results.json
└── final_report.md

Quality Thresholds

Configuration Options

{
  "skill_dir": "output/myskill/",
  "validation_level": "full",
  "thresholds": {
    "pass": 80,
    "warn": 60
  },
  "requirements": {
    "min_skill_md_lines": 100,
    "min_code_examples": 3,
    "min_reference_files": 2,
    "require_navigation": true,
    "require_faq": false
  },
  "output": {
    "report_format": "markdown",
    "save_report": true
  }
}

Validation Levels

Custom Validation Rules

Add custom rules via configuration:

{
  "custom_rules": [
    {
      "name": "api_coverage",
      "type": "grep",
      "pattern": "^### .*\\(\\)",
      "file": "references/api.md",
      "min_matches": 10,
      "message": "API reference should document at least 10 functions"
    }
  ]
}

Troubleshooting

Integration with Workflow

doc-scraper → skill-builder → skill-enhancer → quality-checker → skill-packager
                                                     ↓
                                              [If FAIL: fix issues]
                                                     ↓
                                              [If WARN: review]
                                                     ↓
                                              [If PASS: package]

References

• Claude Skills Quality Guidelines: https://docs.anthropic.com/skills
• AIWG Quality Standards: agentic/code/addons/writing-quality/
• REF-001: Production-Grade Agentic Workflows (BP-4, BP-9)
• REF-002: LLM Failure Modes (Archetype 1 grounding, Archetype 2 over-helpfulness)