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Run npx skillmds add majiayu000/dead-code-2 in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

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Who published Dead Code?

majiayu000 (@majiayu000) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Dead Code by majiayu000 — Agent Skill

Name: Dead Code
Rating: 4.2 (5 reviews)
Author: majiayu000

Dead Code

Find and remove unused code added in the current branch. Use when asked to find dead code, remove unused functions, clean up unreferenced code, or check for orphaned controllers/services/SDK functions. Triggers on phrases like "find dead code", "remove unused code", "check for orphaned functions", or "clean up unreferenced exports".

majiayu000 c9587f7 2 files · 3.0 KB Updated Sep 9, 2026 567 repo stars

File contents

Dead Code Removal

Find and remove code added in the current branch that is never actually used.

Workflow

Get the diff: git diff master...HEAD --name-only to find changed files
For each changed file, identify newly added exports:
- Functions, classes, constants, types
- Controllers, services, SDK functions, API endpoints
- React components, hooks, utilities
Search the codebase for references to each new export
Flag exports with zero references (excluding their own definition and re-exports)
Remove confirmed dead code or report findings

What to Look For

Backend dead code

Controllers with no routes pointing to them
Service methods never called by controllers or other services
SDK/API client functions never imported in frontend
Middleware not registered in any route
Database models with no queries

Frontend dead code

Components never rendered or imported
Hooks never called
Utility functions never imported
Context providers never used
Redux actions/selectors with no dispatch/useSelector calls

Shared dead code

Types/interfaces never referenced
Constants never imported
Exported functions only used internally (should not be exported)

Search Strategy

For each new export ExportName:

Grep for import statements: import.*ExportName or require.*ExportName
Grep for direct usage: ExportName( or <ExportName or .ExportName
Check barrel files (index.ts) for re-exports
Exclude the file where it's defined from results

An export is dead if:

Zero imports outside its own file
Zero usages outside its own file
Not re-exported from a public API barrel

Guidelines

Only analyze code added in the current branch (not pre-existing code)
Be careful with dynamically referenced code (string-based imports, reflection)
Check for indirect usage through barrel files and re-exports
When uncertain, report as "potentially unused" rather than auto-deleting
Preserve code that's part of a public API even if unused internally
Report a summary: number of dead exports found, files affected, bytes removed

---name: dead-code-2description: Find and remove unused code added in the current branch. Use when asked to find dead code, remove unused functions, clean up unreferenced code, or check for orphaned controllers/services/SDK functions. Triggers on phrases like "find dead code", "remove unused code", "check for orphaned functions", or "clean up unreferenced exports".--- # Dead Code Removal Find and remove code added in the current branch that is never actually used. ## Workflow 1. Get the diff: `git diff master...HEAD --name-only` to find changed files 2. For each changed file, identify newly added exports: - Functions, classes, constants, types - Controllers, services, SDK functions, API endpoints - React components, hooks, utilities 3. Search the codebase for references to each new export 4. Flag exports with zero references (excluding their own definition and re-exports) 5. Remove confirmed dead code or report findings ## What to Look For **Backend dead code** - Controllers with no routes pointing to them - Service methods never called by controllers or other services - SDK/API client functions never imported in frontend - Middleware not registered in any route - Database models with no queries **Frontend dead code** - Components never rendered or imported - Hooks never called - Utility functions never imported - Context providers never used - Redux actions/selectors with no dispatch/useSelector calls **Shared dead code** - Types/interfaces never referenced - Constants never imported - Exported functions only used internally (should not be exported) ## Search Strategy For each new export `ExportName`: 1. Grep for import statements: `import.*ExportName` or `require.*ExportName` 2. Grep for direct usage: `ExportName(` or `<ExportName` or `.ExportName` 3. Check barrel files (index.ts) for re-exports 4. Exclude the file where it's defined from results An export is dead if: - Zero imports outside its own file - Zero usages outside its own file - Not re-exported from a public API barrel ## Guidelines - Only analyze code added in the current branch (not pre-existing code) - Be careful with dynamically referenced code (string-based imports, reflection) - Check for indirect usage through barrel files and re-exports - When uncertain, report as "potentially unused" rather than auto-deleting - Preserve code that's part of a public API even if unused internally - Report a summary: number of dead exports found, files affected, bytes removed

Frequently asked questions