Repomix Unmixer Skill

A Claude Code skill for extracting files from repomix-packed repositories and restoring their original directory structure.

Overview

Repomix packs entire repositories into single AI-friendly files (XML, Markdown, or JSON). This skill reverses that process, extracting all files and restoring the original directory structure.

Quick Start

Installation

1. Download repomix-unmixer.zip
2. Extract to ~/.claude/skills/repomix-unmixer/
3. Restart Claude Code

Basic Usage

Extract a repomix file:

python3 ~/.claude/skills/repomix-unmixer/scripts/unmix_repomix.py \
  "<path_to_repomix_file>" \
  "<output_directory>"

Example:

python3 ~/.claude/skills/repomix-unmixer/scripts/unmix_repomix.py \
  "/path/to/skills.xml" \
  "/tmp/extracted-skills"

Features

• Multi-format support: XML (default), Markdown, and JSON repomix formats
• Auto-detection: Automatically detects repomix format
• Structure preservation: Restores original directory structure
• UTF-8 encoding: Handles international characters correctly
• Progress reporting: Shows extraction progress and statistics
• Validation workflows: Includes comprehensive validation guides

Supported Formats

XML Format (default)

<file path="relative/path/to/file.ext">
content here
</file>

Markdown Format

### File: relative/path/to/file.ext

```language
content here
```

JSON Format

{
  "files": [
    {"path": "file.ext", "content": "content here"}
  ]
}

Bundled Resources

scripts/unmix_repomix.py

Main unmixing script with:

• Format auto-detection
• Multi-format parsing (XML, Markdown, JSON)
• Directory structure creation
• Progress reporting

references/repomix-format.md

Comprehensive format documentation:

• XML, Markdown, and JSON format specifications
• Extraction patterns and regex
• Edge cases and examples
• Format detection logic

references/validation-workflow.md

Detailed validation procedures:

• File count verification
• Directory structure validation
• Content integrity checks
• Skill-specific validation for Claude Code skills
• Quality assurance checklists

Common Use Cases

Unmix Claude Skills

python3 ~/.claude/skills/repomix-unmixer/scripts/unmix_repomix.py \
  "skills.xml" "/tmp/review-skills"

# Review and validate
tree /tmp/review-skills

# Install if valid
cp -r /tmp/review-skills/* ~/.claude/skills/

Extract Repository for Review

python3 ~/.claude/skills/repomix-unmixer/scripts/unmix_repomix.py \
  "repo-output.xml" "/tmp/review-repo"

# Review structure
tree /tmp/review-repo

Restore from Backup

python3 ~/.claude/skills/repomix-unmixer/scripts/unmix_repomix.py \
  "backup.xml" "~/workspace/restored-project"

Validation

After extraction, validate the results:

1. Check file count: Verify extracted count matches expected
2. Review structure: Use tree to inspect directory layout
3. Spot check content: Read a few files to verify integrity
4. Run validation: For skills, use skill-creator validation

For detailed validation procedures, see references/validation-workflow.md.

Requirements

• Python 3.6 or higher
• Standard library only (no external dependencies)

Skill Activation

This skill activates when:

• Unmixing a repomix output file
• Extracting files from a packed repository
• Restoring original directory structure
• Reviewing repomix-packed content
• Converting repomix output back to usable files

Best Practices

1. Extract to temp directories - Always extract to /tmp for initial review
2. Verify file count - Check extracted count matches expectations
3. Review structure - Inspect directory layout before use
4. Check content - Spot-check files for integrity
5. Use validation tools - For skills, use skill-creator validation
6. Preserve originals - Keep the repomix file as backup

Troubleshooting

No Files Extracted

• Verify input file is a valid repomix file
• Check format (XML/Markdown/JSON)
• Refer to references/repomix-format.md

Permission Errors

• Ensure output directory is writable
• Use mkdir -p to create directory first
• Check file permissions

Encoding Issues

• Script uses UTF-8 by default
• Verify repomix file encoding
• Check for special characters

Version

• Version: 1.0.0
• Created: 2025-10-22
• Last Updated: 2025-10-22

License

This skill follows the same license as Claude Code.

Support

For issues or questions:

1. Check references/repomix-format.md for format details
2. Review references/validation-workflow.md for validation help
3. Inspect the script source code at scripts/unmix_repomix.py
4. Report issues to the skill creator

Credits

Created using the skill-creator skill for Claude Code.