Agent skill

code-smell-detector

Automated detection of code smells and anti-patterns to identify refactoring opportunities

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Forks 31

Install this agent skill to your Project

npx add-skill https://github.com/a5c-ai/babysitter/tree/main/library/specializations/code-migration-modernization/skills/code-smell-detector

SKILL.md

Code Smell Detector Skill

Automated detection of code smells, anti-patterns, and design issues that indicate deeper problems in the codebase. This skill identifies refactoring opportunities and prioritizes them by impact.

Purpose

Enable systematic detection of code smells for:

  • Refactoring prioritization
  • Technical debt identification
  • Code quality improvement
  • Migration preparation
  • Design pattern violations

Capabilities

1. Long Method Detection

  • Identify methods exceeding line thresholds
  • Analyze parameter counts
  • Detect high cyclomatic complexity
  • Suggest extraction candidates

2. Large Class Identification

  • Detect classes with too many responsibilities
  • Identify god classes
  • Analyze class cohesion
  • Suggest decomposition strategies

3. Feature Envy Analysis

  • Find methods using other classes' data excessively
  • Identify misplaced functionality
  • Suggest method relocation
  • Map cross-class dependencies

4. Primitive Obsession Detection

  • Identify overuse of primitives
  • Find missing value objects
  • Detect stringly-typed code
  • Suggest domain type extraction

5. Parallel Inheritance Hierarchy

  • Detect mirrored class hierarchies
  • Identify inheritance coupling
  • Suggest hierarchy consolidation
  • Map inheritance relationships

6. Shotgun Surgery Detection

  • Identify changes requiring multiple file edits
  • Detect scattered functionality
  • Map change propagation patterns
  • Suggest consolidation points

7. God Class Identification

  • Detect classes doing too much
  • Analyze responsibility distribution
  • Calculate lack of cohesion metrics
  • Suggest single responsibility refactoring

Tool Integrations

Tool Purpose Integration Method
SonarQube Code smell detection MCP Server / API
PMD Java smell detection CLI
IntelliJ IDEA IDE-based analysis CLI / Export
Designite Design smell detection CLI
ast-grep Pattern-based detection MCP Server / CLI
ESLint JavaScript smell rules CLI

Output Schema

json
{
  "analysisId": "string",
  "timestamp": "ISO8601",
  "target": {
    "path": "string",
    "filesAnalyzed": "number"
  },
  "smells": [
    {
      "type": "string",
      "severity": "high|medium|low",
      "file": "string",
      "line": "number",
      "element": "string",
      "description": "string",
      "metrics": {},
      "refactoringSuggestion": "string",
      "estimatedEffort": "string"
    }
  ],
  "summary": {
    "totalSmells": "number",
    "byType": {},
    "bySeverity": {},
    "hotspots": []
  }
}

Integration with Migration Processes

  • code-refactoring: Primary smell identification
  • technical-debt-remediation: Debt quantification
  • legacy-codebase-assessment: Quality assessment

Related Skills

  • static-code-analyzer: Broader quality analysis
  • refactoring-assistant: Smell remediation
  • dead-code-eliminator: Unused code removal

Related Agents

  • code-transformation-executor: Executes refactorings
  • technical-debt-auditor: Prioritizes debt remediation

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