Open-CCMD: Open Source CLAUDE.md Files

Making affordable AI models perform like Claude Code + Sonnet

Open-CCMD is a collection of expert-level coding assistant guides (CLAUDE.md files) for different programming languages and frameworks. These guides help open-source AI models achieve better performance in code generation, debugging, and development tasks.

🎯 Problem Statement

Open-source AI models are affordable but often struggle with code quality and debugging efficiency. This project provides comprehensive, language-specific guides that help these models:

• ✅ Write better, more maintainable code
• ✅ Debug more efficiently with systematic approaches
• ✅ Follow best practices and patterns
• ✅ Understand codebases before making changes
• ✅ Test and verify changes properly

Goal: Make cheap open-source models perform on par with Claude Code + Sonnet for coding tasks.

⚠️ Current Status & Disclaimer

Important: While these guides make open-source AI models significantly better at coding tasks, they do not yet achieve the same level of performance as premium models like Claude Opus, Claude Sonnet, or GPT-5.

We are on a journey toward that goal, and these guides represent an important step in bridging the gap between affordable open-source models and premium coding assistants. With continued improvements, community contributions, and refinements, we're working to close that gap.

What you can expect:

• ✅ Significantly improved code quality compared to using open-source models without guides
• ✅ Better debugging and systematic problem-solving approaches
• ✅ More consistent adherence to best practices
• ⚠️ Not yet at the level of premium models, but continuously improving

📚 Available Guides

Language/Framework	File	Status
C	languages/C_CLAUDE.md	✅ Complete
C#	languages/CSHARP_CLAUDE.md	✅ Complete
C++	languages/CPP_CLAUDE.md	✅ Complete
Go	languages/GO_CLAUDE.md	✅ Complete
Java	languages/JAVA_CLAUDE.md	✅ Complete
JavaScript	languages/JAVASCRIPT_CLAUDE.md	✅ Complete
Python	languages/PYTHON_CLAUDE.md	✅ Complete
Rust	languages/RUST_CLAUDE.md	✅ Complete
TypeScript	languages/TYPESCRIPT_CLAUDE.md	✅ Complete

More languages and frameworks coming soon! See Contributing to add your own.

🚀 Quick Start

For Users

1. Download the guide for your language:

   # Clone the repository
   git clone https://github.com/yourusername/open-ccmd.git
   cd open-ccmd
   
   # Copy the guide to your project
   cp languages/PYTHON_CLAUDE.md /path/to/your/project/CLAUDE.md

2. Use with your AI assistant:

   • Add the guide to your project root as CLAUDE.md
   • Reference it in your AI assistant's system prompt or context
   • The guide will help the model follow best practices and systematic approaches

3. Customize (optional):

   • Add project-specific patterns or conventions
   • Include framework-specific guidelines
   • Add your team's coding standards

For AI Assistants

When working with a project that includes a CLAUDE.md file:

1. Read the guide first - Understand the methodology and principles
2. Follow Phase 0 - Always start with the 5-Question Framework
3. Apply the workflows - Use the systematic approaches for coding, debugging, and testing
4. Verify everything - Never assume code works; always test and verify

📖 What's in Each Guide?

Each language-specific guide includes:

• 🎯 Phase 0: Strategic Analysis - The 5-Question Framework for understanding tasks
• 🔌 Interface-First Design - Define contracts before implementation
• 🏗️ Bottom-Up Development - Build and test incrementally
• ✋ Verification Protocol - Never assume, always verify
• 📐 Syntax & Type Checking - Catch errors early
• 🔍 Hypothesis-Driven Debugging - Systematic problem-solving
• 🚨 Common Failure Patterns - Learn from mistakes
• 📚 Language-Specific Patterns - Best practices for the language

🏗️ Project Structure

open-ccmd/
├── languages/              # Language-specific guides
│   ├── C_CLAUDE.md
│   ├── CPP_CLAUDE.md
│   ├── CSHARP_CLAUDE.md
│   ├── GO_CLAUDE.md
│   ├── JAVA_CLAUDE.md
│   ├── JAVASCRIPT_CLAUDE.md
│   ├── PYTHON_CLAUDE.md
│   ├── RUST_CLAUDE.md
│   ├── TYPESCRIPT_CLAUDE.md
│   └── [More languages...]
├── CONTRIBUTING.md        # How to contribute
├── LICENSE                # MIT License
└── README.md              # This file

🤝 Contributing

We welcome contributions! Whether you want to:

• Add a new language or framework guide
• Improve existing guides
• Fix bugs or typos
• Add examples or use cases

See CONTRIBUTING.md for detailed guidelines.

Quick Contribution Steps

1. Fork the repository
2. Create a new guide in languages/ following the structure of existing guides
3. Test it with an AI assistant
4. Submit a pull request

📝 License

This project is licensed under the MIT License - see the LICENSE file for details.

🙏 Acknowledgments

• Inspired by Claude Code's systematic approach to coding assistance
• Built for the open-source AI community
• Contributions from developers who want better AI coding tools

🔮 Roadmap

• Add guides for TypeScript/JavaScript
• Add guides for Go, Rust, C++
• Add guide for C
• Add guide for C#
• Optimize length of CLAUDE.md files for efficiency
• Add framework-specific guides (React, Django, Spring Boot, etc.)

💬 Discussion

Have questions, suggestions, or want to discuss improvements?

• Open an issue on GitHub
• Start a discussion
• Contribute a guide!

⭐ Star History

If you find this project useful, please consider giving it a star! It helps others discover the project.

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Remember: "Simple, working code beats complex, perfect code."

Think strategically. Act systematically. Iterate until it works. Always clean up.