Files
claude-skills-reference/engineering/skill-tester/scripts/quality_scorer.py
xingzihai 2f92a1dfcb feat(skill-tester): add Security dimension to quality scoring system
- Add SecurityScorer module (605 lines) with comprehensive security assessment
- Add 4 security scoring components:
  - Sensitive data exposure prevention (hardcoded credentials detection)
  - Safe file operations (path traversal prevention)
  - Command injection prevention (shell=True, eval, exec detection)
  - Input validation quality (argparse, error handling, type checking)
- Add 53 unit tests with 850 lines of test code
- Update quality_scorer.py to integrate Security dimension (20% weight)
- Rebalance all dimensions from 25% to 20% (5 dimensions total)
- Update tier requirements:
  - POWERFUL: Security ≥70
  - STANDARD: Security ≥50
  - BASIC: Security ≥40
- Update documentation (quality-scoring-rubric.md, tier-requirements-matrix.md)
- Version bump to 2.0.0

This addresses the feedback from PR #420 by providing a focused, well-tested
implementation of the Security dimension without bundling other changes.
2026-03-26 13:25:27 +00:00

1150 lines
48 KiB
Python

#!/usr/bin/env python3
"""
Quality Scorer - Scores skills across multiple quality dimensions
This script provides comprehensive quality assessment for skills in the claude-skills
ecosystem by evaluating documentation, code quality, completeness, security, and usability.
Generates letter grades, tier recommendations, and improvement roadmaps.
Usage:
python quality_scorer.py <skill_path> [--detailed] [--minimum-score SCORE] [--json]
Author: Claude Skills Engineering Team
Version: 2.0.0
Dependencies: Python Standard Library Only
Changelog:
v2.0.0 - Added Security dimension (20% weight), rebalanced all dimensions to 20%
v1.0.0 - Initial release with 4 dimensions (25% each)
"""
import argparse
import ast
import json
import os
import re
import sys
from datetime import datetime
from pathlib import Path
from typing import Dict, List, Any, Optional, Tuple
# Import Security Scorer module
from security_scorer import SecurityScorer
try:
import yaml
except ImportError:
# Minimal YAML subset: parse simple key: value frontmatter without pyyaml
class _YamlStub:
class YAMLError(Exception):
pass
@staticmethod
def safe_load(text):
result = {}
for line in text.strip().splitlines():
if ':' in line:
key, _, value = line.partition(':')
result[key.strip()] = value.strip()
return result if result else None
yaml = _YamlStub()
class QualityDimension:
"""Represents a quality scoring dimension"""
def __init__(self, name: str, weight: float, description: str):
self.name = name
self.weight = weight
self.description = description
self.score = 0.0
self.max_score = 100.0
self.details = {}
self.suggestions = []
def add_score(self, component: str, score: float, max_score: float, details: str = ""):
"""Add a component score"""
self.details[component] = {
"score": score,
"max_score": max_score,
"percentage": (score / max_score * 100) if max_score > 0 else 0,
"details": details
}
def calculate_final_score(self):
"""Calculate the final weighted score for this dimension"""
if not self.details:
self.score = 0.0
return
total_score = sum(detail["score"] for detail in self.details.values())
total_max = sum(detail["max_score"] for detail in self.details.values())
self.score = (total_score / total_max * 100) if total_max > 0 else 0.0
def add_suggestion(self, suggestion: str):
"""Add an improvement suggestion"""
self.suggestions.append(suggestion)
class QualityReport:
"""Container for quality assessment results"""
def __init__(self, skill_path: str):
self.skill_path = skill_path
self.timestamp = datetime.utcnow().isoformat() + "Z"
self.dimensions = {}
self.overall_score = 0.0
self.letter_grade = "F"
self.tier_recommendation = "BASIC"
self.improvement_roadmap = []
self.summary_stats = {}
def add_dimension(self, dimension: QualityDimension):
"""Add a quality dimension"""
self.dimensions[dimension.name] = dimension
def calculate_overall_score(self):
"""Calculate overall weighted score"""
if not self.dimensions:
return
total_weighted_score = 0.0
total_weight = 0.0
for dimension in self.dimensions.values():
total_weighted_score += dimension.score * dimension.weight
total_weight += dimension.weight
self.overall_score = total_weighted_score / total_weight if total_weight > 0 else 0.0
# Calculate letter grade
if self.overall_score >= 95:
self.letter_grade = "A+"
elif self.overall_score >= 90:
self.letter_grade = "A"
elif self.overall_score >= 85:
self.letter_grade = "A-"
elif self.overall_score >= 80:
self.letter_grade = "B+"
elif self.overall_score >= 75:
self.letter_grade = "B"
elif self.overall_score >= 70:
self.letter_grade = "B-"
elif self.overall_score >= 65:
self.letter_grade = "C+"
elif self.overall_score >= 60:
self.letter_grade = "C"
elif self.overall_score >= 55:
self.letter_grade = "C-"
elif self.overall_score >= 50:
self.letter_grade = "D"
else:
self.letter_grade = "F"
# Recommend tier based on overall score and specific criteria
self._calculate_tier_recommendation()
# Generate improvement roadmap
self._generate_improvement_roadmap()
# Calculate summary statistics
self._calculate_summary_stats()
def _calculate_tier_recommendation(self):
"""Calculate recommended tier based on quality scores"""
doc_score = self.dimensions.get("Documentation", QualityDimension("", 0, "")).score
code_score = self.dimensions.get("Code Quality", QualityDimension("", 0, "")).score
completeness_score = self.dimensions.get("Completeness", QualityDimension("", 0, "")).score
usability_score = self.dimensions.get("Usability", QualityDimension("", 0, "")).score
security_score = self.dimensions.get("Security", QualityDimension("", 0, "")).score
# POWERFUL tier requirements (all dimensions must be strong)
if (self.overall_score >= 80 and
all(score >= 75 for score in [doc_score, code_score, completeness_score, usability_score]) and
security_score >= 70):
self.tier_recommendation = "POWERFUL"
# STANDARD tier requirements (most dimensions good)
elif (self.overall_score >= 70 and
sum(1 for score in [doc_score, code_score, completeness_score, usability_score, security_score] if score >= 65) >= 4 and
security_score >= 50):
self.tier_recommendation = "STANDARD"
# BASIC tier (minimum viable quality)
else:
self.tier_recommendation = "BASIC"
def _generate_improvement_roadmap(self):
"""Generate prioritized improvement suggestions"""
all_suggestions = []
# Collect suggestions from all dimensions with scores
for dim_name, dimension in self.dimensions.items():
for suggestion in dimension.suggestions:
priority = "HIGH" if dimension.score < 60 else "MEDIUM" if dimension.score < 75 else "LOW"
all_suggestions.append({
"priority": priority,
"dimension": dim_name,
"suggestion": suggestion,
"current_score": dimension.score
})
# Sort by priority and score
priority_order = {"HIGH": 0, "MEDIUM": 1, "LOW": 2}
all_suggestions.sort(key=lambda x: (priority_order[x["priority"]], x["current_score"]))
self.improvement_roadmap = all_suggestions[:10] # Top 10 suggestions
def _calculate_summary_stats(self):
"""Calculate summary statistics"""
scores = [dim.score for dim in self.dimensions.values()]
self.summary_stats = {
"highest_dimension": max(self.dimensions.items(), key=lambda x: x[1].score)[0] if scores else "None",
"lowest_dimension": min(self.dimensions.items(), key=lambda x: x[1].score)[0] if scores else "None",
"score_variance": sum((score - self.overall_score) ** 2 for score in scores) / len(scores) if scores else 0,
"dimensions_above_70": sum(1 for score in scores if score >= 70),
"dimensions_below_50": sum(1 for score in scores if score < 50)
}
class QualityScorer:
"""Main quality scoring engine"""
def __init__(self, skill_path: str, detailed: bool = False, verbose: bool = False):
self.skill_path = Path(skill_path).resolve()
self.detailed = detailed
self.verbose = verbose
self.report = QualityReport(str(self.skill_path))
def log_verbose(self, message: str):
"""Log verbose message if verbose mode enabled"""
if self.verbose:
print(f"[VERBOSE] {message}", file=sys.stderr)
def assess_quality(self) -> QualityReport:
"""Main quality assessment entry point"""
try:
self.log_verbose(f"Starting quality assessment for {self.skill_path}")
# Check if skill path exists
if not self.skill_path.exists():
raise ValueError(f"Skill path does not exist: {self.skill_path}")
# Score each dimension (20% weight each, 5 dimensions total)
self._score_documentation()
self._score_code_quality()
self._score_completeness()
self._score_security()
self._score_usability()
# Calculate overall metrics
self.report.calculate_overall_score()
self.log_verbose(f"Quality assessment completed. Overall score: {self.report.overall_score:.1f}")
except Exception as e:
print(f"Quality assessment failed: {str(e)}", file=sys.stderr)
raise
return self.report
def _score_documentation(self):
"""Score documentation quality (25% weight)"""
self.log_verbose("Scoring documentation quality...")
dimension = QualityDimension("Documentation", 0.20, "Quality of documentation and written materials")
# Score SKILL.md
self._score_skill_md(dimension)
# Score README.md
self._score_readme(dimension)
# Score reference documentation
self._score_references(dimension)
# Score examples and usage clarity
self._score_examples(dimension)
dimension.calculate_final_score()
self.report.add_dimension(dimension)
def _score_skill_md(self, dimension: QualityDimension):
"""Score SKILL.md quality"""
skill_md_path = self.skill_path / "SKILL.md"
if not skill_md_path.exists():
dimension.add_score("skill_md_existence", 0, 25, "SKILL.md does not exist")
dimension.add_suggestion("Create comprehensive SKILL.md file")
return
try:
content = skill_md_path.read_text(encoding='utf-8')
lines = [line for line in content.split('\n') if line.strip()]
# Score based on length and depth
line_count = len(lines)
if line_count >= 400:
length_score = 25
elif line_count >= 300:
length_score = 20
elif line_count >= 200:
length_score = 15
elif line_count >= 100:
length_score = 10
else:
length_score = 5
dimension.add_score("skill_md_length", length_score, 25,
f"SKILL.md has {line_count} lines")
if line_count < 300:
dimension.add_suggestion("Expand SKILL.md with more detailed sections")
# Score frontmatter quality
frontmatter_score = self._score_frontmatter(content)
dimension.add_score("skill_md_frontmatter", frontmatter_score, 25,
"Frontmatter completeness and accuracy")
# Score section completeness
section_score = self._score_sections(content)
dimension.add_score("skill_md_sections", section_score, 25,
"Required and recommended section coverage")
# Score content depth
depth_score = self._score_content_depth(content)
dimension.add_score("skill_md_depth", depth_score, 25,
"Content depth and technical detail")
except Exception as e:
dimension.add_score("skill_md_readable", 0, 25, f"Error reading SKILL.md: {str(e)}")
dimension.add_suggestion("Fix SKILL.md file encoding or format issues")
def _score_frontmatter(self, content: str) -> float:
"""Score SKILL.md frontmatter quality"""
required_fields = ["Name", "Tier", "Category", "Dependencies", "Author", "Version"]
recommended_fields = ["Last Updated", "Description"]
try:
if not content.startswith('---'):
return 5 # Partial credit for having some structure
end_marker = content.find('---', 3)
if end_marker == -1:
return 5
frontmatter_text = content[3:end_marker].strip()
frontmatter = yaml.safe_load(frontmatter_text)
if not isinstance(frontmatter, dict):
return 5
score = 0
# Required fields (15 points)
present_required = sum(1 for field in required_fields if field in frontmatter)
score += (present_required / len(required_fields)) * 15
# Recommended fields (5 points)
present_recommended = sum(1 for field in recommended_fields if field in frontmatter)
score += (present_recommended / len(recommended_fields)) * 5
# Quality of field values (5 points)
quality_bonus = 0
for field, value in frontmatter.items():
if isinstance(value, str) and len(value.strip()) > 3:
quality_bonus += 0.5
score += min(quality_bonus, 5)
return min(score, 25)
except yaml.YAMLError:
return 5 # Some credit for attempting frontmatter
def _score_sections(self, content: str) -> float:
"""Score section completeness"""
required_sections = ["Description", "Features", "Usage", "Examples"]
recommended_sections = ["Architecture", "Installation", "Troubleshooting", "Contributing"]
score = 0
# Required sections (15 points)
present_required = 0
for section in required_sections:
if re.search(rf'^#+\s*{re.escape(section)}\s*$', content, re.MULTILINE | re.IGNORECASE):
present_required += 1
score += (present_required / len(required_sections)) * 15
# Recommended sections (10 points)
present_recommended = 0
for section in recommended_sections:
if re.search(rf'^#+\s*{re.escape(section)}\s*$', content, re.MULTILINE | re.IGNORECASE):
present_recommended += 1
score += (present_recommended / len(recommended_sections)) * 10
return score
def _score_content_depth(self, content: str) -> float:
"""Score content depth and technical detail"""
score = 0
# Code examples (8 points)
code_blocks = len(re.findall(r'```[\w]*\n.*?\n```', content, re.DOTALL))
score += min(code_blocks * 2, 8)
# Technical depth indicators (8 points)
depth_indicators = ['API', 'algorithm', 'architecture', 'implementation', 'performance',
'scalability', 'security', 'integration', 'configuration', 'parameters']
depth_score = sum(1 for indicator in depth_indicators if indicator.lower() in content.lower())
score += min(depth_score * 0.8, 8)
# Usage examples (9 points)
example_patterns = [r'Example:', r'Usage:', r'```bash', r'```python', r'```yaml']
example_count = sum(len(re.findall(pattern, content, re.IGNORECASE)) for pattern in example_patterns)
score += min(example_count * 1.5, 9)
return score
def _score_readme(self, dimension: QualityDimension):
"""Score README.md quality"""
readme_path = self.skill_path / "README.md"
if not readme_path.exists():
dimension.add_score("readme_existence", 10, 25, "README.md exists (partial credit)")
dimension.add_suggestion("Create README.md with usage instructions")
return
try:
content = readme_path.read_text(encoding='utf-8')
# Length and substance
if len(content.strip()) >= 1000:
length_score = 25
elif len(content.strip()) >= 500:
length_score = 20
elif len(content.strip()) >= 200:
length_score = 15
else:
length_score = 10
dimension.add_score("readme_quality", length_score, 25,
f"README.md content quality ({len(content)} characters)")
if len(content.strip()) < 500:
dimension.add_suggestion("Expand README.md with more detailed usage examples")
except Exception:
dimension.add_score("readme_readable", 5, 25, "README.md exists but has issues")
def _score_references(self, dimension: QualityDimension):
"""Score reference documentation quality"""
references_dir = self.skill_path / "references"
if not references_dir.exists():
dimension.add_score("references_existence", 0, 25, "No references directory")
dimension.add_suggestion("Add references directory with documentation")
return
ref_files = list(references_dir.glob("*.md")) + list(references_dir.glob("*.txt"))
if not ref_files:
dimension.add_score("references_content", 5, 25, "References directory empty")
dimension.add_suggestion("Add reference documentation files")
return
# Score based on number and quality of reference files
score = min(len(ref_files) * 5, 20) # Up to 20 points for multiple files
# Bonus for substantial content
total_content = 0
for ref_file in ref_files:
try:
content = ref_file.read_text(encoding='utf-8')
total_content += len(content.strip())
except:
continue
if total_content >= 2000:
score += 5 # Bonus for substantial reference content
dimension.add_score("references_quality", score, 25,
f"References: {len(ref_files)} files, {total_content} chars")
def _score_examples(self, dimension: QualityDimension):
"""Score examples and usage clarity"""
score = 0
# Look for example files in various locations
example_locations = ["examples", "assets", "scripts"]
example_files = []
for location in example_locations:
location_path = self.skill_path / location
if location_path.exists():
example_files.extend(location_path.glob("*example*"))
example_files.extend(location_path.glob("*sample*"))
example_files.extend(location_path.glob("*demo*"))
# Score based on example availability
if len(example_files) >= 3:
score = 25
elif len(example_files) >= 2:
score = 20
elif len(example_files) >= 1:
score = 15
else:
score = 10
dimension.add_suggestion("Add more usage examples and sample files")
dimension.add_score("examples_availability", score, 25,
f"Found {len(example_files)} example/sample files")
def _score_code_quality(self):
"""Score code quality (25% weight)"""
self.log_verbose("Scoring code quality...")
dimension = QualityDimension("Code Quality", 0.20, "Quality of Python scripts and implementation")
scripts_dir = self.skill_path / "scripts"
if not scripts_dir.exists():
dimension.add_score("scripts_existence", 0, 100, "No scripts directory")
dimension.add_suggestion("Create scripts directory with Python files")
dimension.calculate_final_score()
self.report.add_dimension(dimension)
return
python_files = list(scripts_dir.glob("*.py"))
if not python_files:
dimension.add_score("python_scripts", 0, 100, "No Python scripts found")
dimension.add_suggestion("Add Python scripts to scripts directory")
dimension.calculate_final_score()
self.report.add_dimension(dimension)
return
# Score script complexity and quality
self._score_script_complexity(python_files, dimension)
# Score error handling
self._score_error_handling(python_files, dimension)
# Score code structure
self._score_code_structure(python_files, dimension)
# Score output format support
self._score_output_support(python_files, dimension)
dimension.calculate_final_score()
self.report.add_dimension(dimension)
def _score_script_complexity(self, python_files: List[Path], dimension: QualityDimension):
"""Score script complexity and sophistication"""
total_complexity = 0
script_count = len(python_files)
for script_path in python_files:
try:
content = script_path.read_text(encoding='utf-8')
# Count lines of code (excluding empty lines and comments)
lines = content.split('\n')
loc = len([line for line in lines if line.strip() and not line.strip().startswith('#')])
# Score based on LOC
if loc >= 800:
complexity_score = 25
elif loc >= 500:
complexity_score = 20
elif loc >= 300:
complexity_score = 15
elif loc >= 100:
complexity_score = 10
else:
complexity_score = 5
total_complexity += complexity_score
except Exception:
continue
avg_complexity = total_complexity / script_count if script_count > 0 else 0
dimension.add_score("script_complexity", avg_complexity, 25,
f"Average script complexity across {script_count} scripts")
if avg_complexity < 15:
dimension.add_suggestion("Consider expanding scripts with more functionality")
def _score_error_handling(self, python_files: List[Path], dimension: QualityDimension):
"""Score error handling quality"""
total_error_score = 0
script_count = len(python_files)
for script_path in python_files:
try:
content = script_path.read_text(encoding='utf-8')
error_score = 0
# Check for try/except blocks
try_count = content.count('try:')
error_score += min(try_count * 5, 15) # Up to 15 points for try/except
# Check for specific exception handling
exception_types = ['Exception', 'ValueError', 'FileNotFoundError', 'KeyError', 'TypeError']
for exc_type in exception_types:
if exc_type in content:
error_score += 2 # 2 points per specific exception type
# Check for logging or error reporting
if any(indicator in content for indicator in ['print(', 'logging.', 'sys.stderr']):
error_score += 5 # 5 points for error reporting
total_error_score += min(error_score, 25) # Cap at 25 per script
except Exception:
continue
avg_error_score = total_error_score / script_count if script_count > 0 else 0
dimension.add_score("error_handling", avg_error_score, 25,
f"Error handling quality across {script_count} scripts")
if avg_error_score < 15:
dimension.add_suggestion("Improve error handling with try/except blocks and meaningful error messages")
def _score_code_structure(self, python_files: List[Path], dimension: QualityDimension):
"""Score code structure and organization"""
total_structure_score = 0
script_count = len(python_files)
for script_path in python_files:
try:
content = script_path.read_text(encoding='utf-8')
structure_score = 0
# Check for functions and classes
function_count = content.count('def ')
class_count = content.count('class ')
structure_score += min(function_count * 2, 10) # Up to 10 points for functions
structure_score += min(class_count * 3, 9) # Up to 9 points for classes
# Check for docstrings
docstring_patterns = ['"""', "'''", 'def.*:\n.*"""', 'class.*:\n.*"""']
for pattern in docstring_patterns:
if re.search(pattern, content):
structure_score += 1 # 1 point per docstring indicator
# Check for if __name__ == "__main__"
if 'if __name__ == "__main__"' in content:
structure_score += 3
# Check for imports organization
if content.lstrip().startswith(('import ', 'from ')):
structure_score += 2 # Imports at top
total_structure_score += min(structure_score, 25)
except Exception:
continue
avg_structure_score = total_structure_score / script_count if script_count > 0 else 0
dimension.add_score("code_structure", avg_structure_score, 25,
f"Code structure quality across {script_count} scripts")
if avg_structure_score < 15:
dimension.add_suggestion("Improve code structure with more functions, classes, and documentation")
def _score_output_support(self, python_files: List[Path], dimension: QualityDimension):
"""Score output format support"""
total_output_score = 0
script_count = len(python_files)
for script_path in python_files:
try:
content = script_path.read_text(encoding='utf-8')
output_score = 0
# Check for JSON support
if any(indicator in content for indicator in ['json.dump', 'json.load', '--json']):
output_score += 12 # JSON support
# Check for formatted output
if any(indicator in content for indicator in ['print(f"', 'print("', '.format(', 'f"']):
output_score += 8 # Human-readable output
# Check for argparse help
if '--help' in content or 'add_help=' in content:
output_score += 5 # Help functionality
total_output_score += min(output_score, 25)
except Exception:
continue
avg_output_score = total_output_score / script_count if script_count > 0 else 0
dimension.add_score("output_support", avg_output_score, 25,
f"Output format support across {script_count} scripts")
if avg_output_score < 15:
dimension.add_suggestion("Add support for both JSON and human-readable output formats")
def _score_completeness(self):
"""Score completeness (25% weight)"""
self.log_verbose("Scoring completeness...")
dimension = QualityDimension("Completeness", 0.20, "Completeness of required components and assets")
# Score directory structure
self._score_directory_structure(dimension)
# Score asset availability
self._score_assets(dimension)
# Score expected outputs
self._score_expected_outputs(dimension)
# Score test coverage
self._score_test_coverage(dimension)
dimension.calculate_final_score()
self.report.add_dimension(dimension)
def _score_directory_structure(self, dimension: QualityDimension):
"""Score directory structure completeness"""
required_dirs = ["scripts"]
recommended_dirs = ["assets", "references", "expected_outputs"]
score = 0
# Required directories (15 points)
for dir_name in required_dirs:
if (self.skill_path / dir_name).exists():
score += 15 / len(required_dirs)
# Recommended directories (10 points)
present_recommended = 0
for dir_name in recommended_dirs:
if (self.skill_path / dir_name).exists():
present_recommended += 1
score += (present_recommended / len(recommended_dirs)) * 10
dimension.add_score("directory_structure", score, 25,
f"Directory structure completeness")
missing_recommended = [d for d in recommended_dirs if not (self.skill_path / d).exists()]
if missing_recommended:
dimension.add_suggestion(f"Add recommended directories: {', '.join(missing_recommended)}")
def _score_assets(self, dimension: QualityDimension):
"""Score asset availability and quality"""
assets_dir = self.skill_path / "assets"
if not assets_dir.exists():
dimension.add_score("assets_existence", 5, 25, "Assets directory missing")
dimension.add_suggestion("Create assets directory with sample data")
return
asset_files = [f for f in assets_dir.rglob("*") if f.is_file()]
if not asset_files:
dimension.add_score("assets_content", 10, 25, "Assets directory empty")
dimension.add_suggestion("Add sample data files to assets directory")
return
# Score based on number and diversity of assets
score = min(len(asset_files) * 3, 20) # Up to 20 points for multiple assets
# Bonus for diverse file types
extensions = set(f.suffix.lower() for f in asset_files if f.suffix)
if len(extensions) >= 3:
score += 5 # Bonus for file type diversity
dimension.add_score("assets_quality", score, 25,
f"Assets: {len(asset_files)} files, {len(extensions)} types")
def _score_expected_outputs(self, dimension: QualityDimension):
"""Score expected outputs availability"""
expected_dir = self.skill_path / "expected_outputs"
if not expected_dir.exists():
dimension.add_score("expected_outputs", 10, 25, "Expected outputs directory missing")
dimension.add_suggestion("Add expected_outputs directory with sample results")
return
output_files = [f for f in expected_dir.rglob("*") if f.is_file()]
if len(output_files) >= 3:
score = 25
elif len(output_files) >= 2:
score = 20
elif len(output_files) >= 1:
score = 15
else:
score = 10
dimension.add_suggestion("Add expected output files for testing")
dimension.add_score("expected_outputs", score, 25,
f"Expected outputs: {len(output_files)} files")
def _score_test_coverage(self, dimension: QualityDimension):
"""Score test coverage and validation"""
# This is a simplified scoring - in a more sophisticated system,
# this would integrate with actual test runners
score = 15 # Base score for having a structure
# Check for test-related files
test_indicators = ["test", "spec", "check"]
test_files = []
for indicator in test_indicators:
test_files.extend(self.skill_path.rglob(f"*{indicator}*"))
if test_files:
score += 10 # Bonus for test files
dimension.add_score("test_coverage", score, 25,
f"Test coverage indicators: {len(test_files)} files")
if not test_files:
dimension.add_suggestion("Add test files or validation scripts")
def _score_usability(self):
"""Score usability (25% weight)"""
self.log_verbose("Scoring usability...")
dimension = QualityDimension("Usability", 0.20, "Ease of use and user experience")
# Score installation simplicity
self._score_installation(dimension)
# Score usage clarity
self._score_usage_clarity(dimension)
# Score help and documentation accessibility
self._score_help_accessibility(dimension)
# Score practical examples
self._score_practical_examples(dimension)
dimension.calculate_final_score()
self.report.add_dimension(dimension)
def _score_installation(self, dimension: QualityDimension):
"""Score installation simplicity"""
# Check for installation complexity indicators
score = 25 # Start with full points for standard library only approach
# Check for requirements.txt or setup.py (would reduce score)
if (self.skill_path / "requirements.txt").exists():
score -= 5 # Minor penalty for external dependencies
dimension.add_suggestion("Consider removing external dependencies for easier installation")
if (self.skill_path / "setup.py").exists():
score -= 3 # Minor penalty for complex setup
dimension.add_score("installation_simplicity", max(score, 15), 25,
"Installation complexity assessment")
def _score_usage_clarity(self, dimension: QualityDimension):
"""Score usage clarity"""
score = 0
# Check README for usage instructions
readme_path = self.skill_path / "README.md"
if readme_path.exists():
try:
content = readme_path.read_text(encoding='utf-8').lower()
if 'usage' in content or 'how to' in content:
score += 10
if 'example' in content:
score += 5
except:
pass
# Check scripts for help text quality
scripts_dir = self.skill_path / "scripts"
if scripts_dir.exists():
python_files = list(scripts_dir.glob("*.py"))
help_quality = 0
for script_path in python_files:
try:
content = script_path.read_text(encoding='utf-8')
if 'argparse' in content and 'help=' in content:
help_quality += 2
except:
continue
score += min(help_quality, 10) # Up to 10 points for help text
dimension.add_score("usage_clarity", score, 25, "Usage instructions and help quality")
if score < 15:
dimension.add_suggestion("Improve usage documentation and help text")
def _score_help_accessibility(self, dimension: QualityDimension):
"""Score help and documentation accessibility"""
score = 0
# Check for comprehensive help in scripts
scripts_dir = self.skill_path / "scripts"
if scripts_dir.exists():
python_files = list(scripts_dir.glob("*.py"))
for script_path in python_files:
try:
content = script_path.read_text(encoding='utf-8')
# Check for detailed help text
if 'epilog=' in content or 'description=' in content:
score += 5 # Detailed help
# Check for examples in help
if 'examples:' in content.lower() or 'example:' in content.lower():
score += 3 # Examples in help
except:
continue
# Check for documentation files
doc_files = list(self.skill_path.glob("*.md"))
if len(doc_files) >= 2:
score += 5 # Multiple documentation files
dimension.add_score("help_accessibility", min(score, 25), 25,
"Help and documentation accessibility")
if score < 15:
dimension.add_suggestion("Add more comprehensive help text and documentation")
def _score_practical_examples(self, dimension: QualityDimension):
"""Score practical examples quality"""
score = 0
# Look for example files
example_patterns = ["*example*", "*sample*", "*demo*", "*tutorial*"]
example_files = []
for pattern in example_patterns:
example_files.extend(self.skill_path.rglob(pattern))
# Score based on example availability and quality
if len(example_files) >= 5:
score = 25
elif len(example_files) >= 3:
score = 20
elif len(example_files) >= 2:
score = 15
elif len(example_files) >= 1:
score = 10
else:
score = 5
dimension.add_suggestion("Add more practical examples and sample files")
dimension.add_score("practical_examples", score, 25,
f"Practical examples: {len(example_files)} files")
def _score_security(self):
"""Score security quality (20% weight)"""
self.log_verbose("Scoring security quality...")
dimension = QualityDimension("Security", 0.20, "Security practices and vulnerability prevention")
# Find Python scripts
python_files = list(self.skill_path.rglob("*.py"))
# Filter out test files and __pycache__
python_files = [f for f in python_files
if "__pycache__" not in str(f) and "test_" not in f.name]
if not python_files:
dimension.add_score("scripts_existence", 25, 25,
"No scripts directory - no script security concerns")
dimension.calculate_final_score()
self.report.add_dimension(dimension)
return
# Use SecurityScorer module
try:
scorer = SecurityScorer(python_files, verbose=self.verbose)
result = scorer.get_overall_score()
# Extract scores from SecurityScorer result
sensitive_data_score = result.get("sensitive_data_exposure", {}).get("score", 0)
file_ops_score = result.get("safe_file_operations", {}).get("score", 0)
command_injection_score = result.get("command_injection_prevention", {}).get("score", 0)
input_validation_score = result.get("input_validation", {}).get("score", 0)
dimension.add_score("sensitive_data_exposure", sensitive_data_score, 25,
"Detection and prevention of hardcoded credentials")
dimension.add_score("safe_file_operations", file_ops_score, 25,
"Prevention of path traversal vulnerabilities")
dimension.add_score("command_injection_prevention", command_injection_score, 25,
"Prevention of command injection vulnerabilities")
dimension.add_score("input_validation", input_validation_score, 25,
"Quality of input validation and error handling")
# Add suggestions from SecurityScorer
for issue in result.get("issues", []):
dimension.add_suggestion(issue)
except Exception as e:
self.log_verbose(f"Security scoring failed: {str(e)}")
dimension.add_score("security_error", 0, 100, f"Security scoring failed: {str(e)}")
dimension.add_suggestion("Fix security scoring module integration")
dimension.calculate_final_score()
self.report.add_dimension(dimension)
class QualityReportFormatter:
"""Formats quality reports for output"""
@staticmethod
def format_json(report: QualityReport) -> str:
"""Format report as JSON"""
return json.dumps({
"skill_path": report.skill_path,
"timestamp": report.timestamp,
"overall_score": round(report.overall_score, 1),
"letter_grade": report.letter_grade,
"tier_recommendation": report.tier_recommendation,
"summary_stats": report.summary_stats,
"dimensions": {
name: {
"name": dim.name,
"weight": dim.weight,
"score": round(dim.score, 1),
"description": dim.description,
"details": dim.details,
"suggestions": dim.suggestions
}
for name, dim in report.dimensions.items()
},
"improvement_roadmap": report.improvement_roadmap
}, indent=2)
@staticmethod
def format_human_readable(report: QualityReport, detailed: bool = False) -> str:
"""Format report as human-readable text"""
lines = []
lines.append("=" * 70)
lines.append("SKILL QUALITY ASSESSMENT REPORT")
lines.append("=" * 70)
lines.append(f"Skill: {report.skill_path}")
lines.append(f"Timestamp: {report.timestamp}")
lines.append(f"Overall Score: {report.overall_score:.1f}/100 ({report.letter_grade})")
lines.append(f"Recommended Tier: {report.tier_recommendation}")
lines.append("")
# Dimension scores
lines.append("QUALITY DIMENSIONS:")
for name, dimension in report.dimensions.items():
lines.append(f" {name}: {dimension.score:.1f}/100 ({dimension.weight * 100:.0f}% weight)")
if detailed and dimension.details:
for component, details in dimension.details.items():
lines.append(f"{component}: {details['score']:.1f}/{details['max_score']} - {details['details']}")
lines.append("")
# Summary statistics
if report.summary_stats:
lines.append("SUMMARY STATISTICS:")
lines.append(f" Highest Dimension: {report.summary_stats['highest_dimension']}")
lines.append(f" Lowest Dimension: {report.summary_stats['lowest_dimension']}")
lines.append(f" Dimensions Above 70%: {report.summary_stats['dimensions_above_70']}")
lines.append(f" Dimensions Below 50%: {report.summary_stats['dimensions_below_50']}")
lines.append("")
# Improvement roadmap
if report.improvement_roadmap:
lines.append("IMPROVEMENT ROADMAP:")
for i, item in enumerate(report.improvement_roadmap[:5], 1):
priority_symbol = "🔴" if item["priority"] == "HIGH" else "🟡" if item["priority"] == "MEDIUM" else "🟢"
lines.append(f" {i}. {priority_symbol} [{item['dimension']}] {item['suggestion']}")
lines.append("")
return "\n".join(lines)
def main():
"""Main entry point"""
parser = argparse.ArgumentParser(
description="Score skill quality across multiple dimensions",
formatter_class=argparse.RawDescriptionHelpFormatter,
epilog="""
Examples:
python quality_scorer.py engineering/my-skill
python quality_scorer.py engineering/my-skill --detailed --json
python quality_scorer.py engineering/my-skill --minimum-score 75
Quality Dimensions (each 25%):
Documentation - SKILL.md quality, README, references, examples
Code Quality - Script complexity, error handling, structure, output
Completeness - Directory structure, assets, expected outputs, tests
Usability - Installation simplicity, usage clarity, help accessibility
Letter Grades: A+ (95+), A (90+), A- (85+), B+ (80+), B (75+), B- (70+), C+ (65+), C (60+), C- (55+), D (50+), F (<50)
"""
)
parser.add_argument("skill_path",
help="Path to the skill directory to assess")
parser.add_argument("--detailed",
action="store_true",
help="Show detailed component scores")
parser.add_argument("--minimum-score",
type=float,
default=0,
help="Minimum acceptable score (exit with error if below)")
parser.add_argument("--json",
action="store_true",
help="Output results in JSON format")
parser.add_argument("--verbose",
action="store_true",
help="Enable verbose logging")
args = parser.parse_args()
try:
# Create scorer and assess quality
scorer = QualityScorer(args.skill_path, args.detailed, args.verbose)
report = scorer.assess_quality()
# Format and output report
if args.json:
print(QualityReportFormatter.format_json(report))
else:
print(QualityReportFormatter.format_human_readable(report, args.detailed))
# Check minimum score requirement
if report.overall_score < args.minimum_score:
print(f"\nERROR: Quality score {report.overall_score:.1f} is below minimum {args.minimum_score}", file=sys.stderr)
sys.exit(1)
# Exit with different codes based on grade
if report.letter_grade in ["A+", "A", "A-"]:
sys.exit(0) # Excellent
elif report.letter_grade in ["B+", "B", "B-"]:
sys.exit(0) # Good
elif report.letter_grade in ["C+", "C", "C-"]:
sys.exit(0) # Acceptable
elif report.letter_grade == "D":
sys.exit(2) # Needs improvement
else: # F
sys.exit(1) # Poor quality
except KeyboardInterrupt:
print("\nQuality assessment interrupted by user", file=sys.stderr)
sys.exit(130)
except Exception as e:
print(f"Quality assessment failed: {str(e)}", file=sys.stderr)
if args.verbose:
import traceback
traceback.print_exc()
sys.exit(1)
if __name__ == "__main__":
main()