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Deep analysis of codebase for code duplication. Detects exact, structural, and pattern-level duplicates, generates comprehensive reports with refactoring suggestions and metrics.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Structured task execution with quality gates, parallel waves, and pm-db tracking — solo or with multi-agent teams (--team). Use this skill when the user wants to execute a task list, run implementation tasks, start building a feature from a plan, run tasks in parallel with a team of agents, or says things like 'execute these tasks', 'start building', 'run the implementation', 'execute the plan', 'execute with a team', or 'start phase execute'. Also triggers on '/start-phase execute' and '/start-phase-execute-team' commands.
Assess and score codebase architecture health — layer separation, SOLID compliance, module coupling (FAN-IN/FAN-OUT), circular dependencies, drift from documented patterns. Use whenever the user asks to assess/review/grade architecture quality, wants an architecture score, or asks how healthy the codebase's architecture is. Analysis-only report + refactoring tasks; for docs-vs-code drift use document-hub-analyze.
Use when Mark reports a bug by pasting a raw artifact with little or no prose — a stack trace, an HTTP request/response trace (URL + method + status like 500/403/404/502), a console/React/Prisma error, a ChunkLoadError, a shell error, or a screenshot of a visual defect — or when he says things like 'still failing', 'clicking X does nothing', 'no inline editor on the rendered page', 'do we have local postgres/pgvector?', or 'identify the true error'. This is the front-to-back debugging procedure — extract the trigger and reproduction from terse input, probe whether the underlying plumbing even exists, localize by contrasting known-good vs broken, and drive to a durable root cause rather than a workaround. Reach for this BEFORE proposing any fix.
Deep analysis of codebase vs documentation alignment (cline-docs/). Detects drift, identifies undocumented code, extracts missing glossary terms, and provides actionable recommendations without making changes. Use this skill when the user asks "are the docs up to date", "check documentation quality", "what's missing from the docs", or wants a read-only audit before deciding what to update. For actually making changes, use document-hub-update instead.
Bootstrap a new project's documentation hub by creating the four core documentation files (systemArchitecture.md, keyPairResponsibility.md, glossary.md, techStack.md) with initial content based on codebase analysis.
Read and summarize the current state of the documentation hub (cline-docs/). Provides a quick overview of system architecture, module responsibilities, technology stack, and glossary terms. Use this skill whenever the user asks about the project's documentation, wants to understand the architecture, asks "what does this project do", "show me the docs", or needs a quick onboarding summary. Also use before starting work to understand project context.
| name | code-duplication |
| description | Deep analysis of codebase for code duplication. Detects exact, structural, and pattern-level duplicates, generates comprehensive reports with refactoring suggestions and metrics. |
Comprehensive code duplication detection and analysis for all programming languages.
Use this skill to identify technical debt from code duplication, quantify duplication metrics, and receive actionable refactoring suggestions.
# Analyze entire codebase
/code-duplication
# Analyze specific directory
/code-duplication src/components
# Analyze with custom configuration
/code-duplication --config .duplication-config.json
# Generate JSON output
/code-duplication --format json --output duplication-report.json
Performs comprehensive duplicate detection to answer:
Identical code blocks (copy-pasted code)
Similar logic with minor variations
Repeated coding patterns that could be abstracted
# Code Duplication Analysis Report
## Executive Summary
- Total LOC analyzed: 12,450
- Duplicate LOC: 1,834 (14.7%)
- Duplicate blocks found: 47
- Estimated LOC reduction: 1,200-1,500
## Top Offenders
1. src/services/user_service.py - 23% duplication (340 LOC)
2. src/api/handlers.py - 18% duplication (245 LOC)
...
## Detailed Findings
### Duplicate Block #1 (Exact)
**Instances**: 4 files
**LOC per instance**: 23 lines
**Potential savings**: 69 lines
**Locations**:
- src/services/user_service.py:145-167
- src/services/order_service.py:89-111
...
**Refactoring Suggestion**:
Extract common authentication logic into shared function:
...
{
"summary": {
"total_files": 156,
"total_loc": 12450,
"duplicate_loc": 1834,
"duplication_percentage": 14.7,
"duplicate_blocks": 47
},
"duplicates": [...],
"top_offenders": [...],
"heatmap": {...}
}
Create .duplication-config.json in your project root:
{
"min_lines": 5,
"exclude_patterns": ["**/test_*.py", "**/migrations/*.py"],
"similarity_threshold": 0.85,
"ignore_comments": true,
"ignore_whitespace": true,
"languages": ["python", "javascript", "typescript"]
}
This skill provides:
✅ Complete — All features implemented and tested