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skills/ck-repomix/SKILL.md

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+---
+name: ck-repomix
+description: Pack repositories into AI-friendly files with Repomix. Use for codebase snapshots, LLM context preparation, security audits, third-party library analysis, and bug investigation across large codebases.
+---
+
+# Repomix
+
+Packs entire repositories into single AI-friendly files (XML, Markdown, plain text) for LLM context.
+
+## When to Use
+
+- Packaging a codebase for AI analysis or review
+- Preparing repository context for LLM prompts
+- Analyzing third-party libraries before adoption
+- Running security audits on unknown codebases
+- Investigating bugs spanning multiple files
+
+## Don't Use When
+
+- Repository contains secrets that must not be shared (always review output first)
+- Codebase exceeds target LLM context limit (use `--include` to filter)
+
+## Quick Start
+
+```bash
+# Package current directory (outputs repomix-output.xml)
+repomix
+
+# Markdown format
+repomix --style markdown
+
+# Remote repository (no clone needed)
+npx repomix --remote owner/repo
+
+# Filtered output
+repomix --include "src/**/*.ts" --remove-comments -o output.md
+```
+
+## Common Workflows
+
+```bash
+# AI code review (TypeScript only, no comments)
+repomix --include "src/**/*.ts" --remove-comments -o review.md --style markdown
+
+# Security audit of third-party lib
+npx repomix --remote vendor/library --style xml -o audit.xml
+
+# Bug investigation (specific modules)
+repomix --include "src/auth/**,src/api/**" -o debug-context.xml
+
+# Full codebase for planning
+repomix --remove-comments --copy
+```
+
+## Output Formats
+
+| Flag | Format | Best For |
+|------|--------|---------|
+| `--style xml` | XML | Default, Claude/GPT |
+| `--style markdown` | Markdown | Readable review |
+| `--style json` | JSON | Programmatic use |
+| `--style plain` | Plain text | Simple context |
+
+## Key Options
+
+```bash
+--include "src/**/*.ts,*.md"   # Include patterns
+-i "tests/**,*.test.js"        # Ignore patterns
+--remove-comments              # Strip all comments
+--copy                         # Copy to clipboard
+-o output.md                   # Output file path
+--no-gitignore                 # Disable .gitignore rules
+--token-count-tree             # Show token distribution
+--no-security-check            # Skip Secretlint checks
+```
+
+## Token Management
+
+```bash
+# Visualize token distribution
+repomix --token-count-tree
+
+# Focus on files >1000 tokens
+repomix --token-count-tree 1000
+```
+
+Context limits: Claude ~200K tokens, GPT-4 ~128K tokens
+
+## Security
+
+Repomix uses Secretlint to detect API keys, passwords, private keys, AWS secrets.
+
+Best practices:
+1. Always review output before sharing
+2. Add `.repomixignore` for sensitive files
+3. Never package `.env` files
+4. Check for hardcoded credentials in output
+
+## Resources
+
+- GitHub: https://github.com/yamadashy/repomix
+- Docs: https://repomix.com/guide/