claude-cookbooks/CONTRIBUTING.md

Contributing to Anthropic Cookbook

Thank you for your interest in contributing to the Anthropic Cookbook! This guide will help you get started with development and ensure your contributions meet our quality standards.

Development Setup

Prerequisites

• Python 3.11 or higher
• uv package manager (recommended) or pip

Quick Start

1. Install uv (recommended package manager):

   curl -LsSf https://astral.sh/uv/install.sh | sh
   

   Or with Homebrew:

   brew install uv
   

2. Clone the repository:

   git clone https://github.com/anthropics/anthropic-cookbook.git
   cd anthropic-cookbook
   

3. Set up the development environment:

   # Create virtual environment and install dependencies
   uv sync --all-extras
   
   # Or with pip:
   pip install -e ".[dev]"
   

4. Install pre-commit hooks:

   uv run pre-commit install
   # Or: pre-commit install
   

5. Set up your API key:

   cp .env.example .env
   # Edit .env and add your Anthropic API key
   

Quality Standards

This repository uses automated tools to maintain code quality:

The Notebook Validation Stack

• papermill: Parameterized notebook execution for testing
• ruff: Fast Python linter and formatter with native Jupyter support
• nbstripout: Keeps notebooks clean in git (removes outputs)

Before Committing

1. Clean notebook outputs:

   uv run nbstripout skills/**/*.ipynb
   

2. Run quality checks:

   uv run ruff check skills/ --fix
   uv run ruff format skills/
   
   uv run python scripts/validate_notebooks.py
   uv run python scripts/check_models.py
   

3. Test notebook execution (optional, requires API key):

   uv run papermill skills/classification/guide.ipynb test.ipynb \
     -p model "claude-3-5-haiku-latest" \
     -p test_mode true \
     -p max_tokens 10
   

Pre-commit Hooks

Pre-commit hooks will automatically run before each commit to ensure code quality:

• Strip notebook outputs
• Format code with ruff
• Validate notebook structure
• Check for hardcoded API keys
• Validate Claude model usage

If a hook fails, fix the issues and try committing again.

Contribution Guidelines

Notebook Best Practices

1. Use environment variables for API keys:

   import os
   api_key = os.environ.get("ANTHROPIC_API_KEY")
   

2. Use current Claude models:

   • For examples: claude-3-5-haiku-latest (fast and cheap)
   • For powerful tasks: claude-opus-4-1
   • Check allowed models in scripts/allowed_models.py

3. Keep notebooks focused:

   • One concept per notebook
   • Clear explanations and comments
   • Include expected outputs as markdown cells

4. Test your notebooks:

   • Ensure they run from top to bottom without errors
   • Use minimal tokens for example API calls
   • Include error handling

Git Workflow

1. Create a feature branch:

   git checkout -b <your-name>/<feature-description>
   # Example: git checkout -b alice/add-rag-example
   

2. Use conventional commits:

   # Format: <type>(<scope>): <subject>
   
   # Types:
   feat     # New feature
   fix      # Bug fix
   docs     # Documentation
   style    # Formatting
   refactor # Code restructuring
   test     # Tests
   chore    # Maintenance
   ci       # CI/CD changes
   
   # Examples:
   git commit -m "feat(skills): add text-to-sql notebook"
   git commit -m "fix(api): use environment variable for API key"
   git commit -m "docs(readme): update installation instructions"
   

3. Keep commits atomic:

   • One logical change per commit
   • Write clear, descriptive messages
   • Reference issues when applicable

4. Push and create PR:

   git push -u origin your-branch-name
   gh pr create  # Or use GitHub web interface
   

Pull Request Guidelines

1. PR Title: Use conventional commit format
2. Description: Include:
   • What changes you made
   • Why you made them
   • How to test them
   • Related issue numbers
3. Keep PRs focused: One feature/fix per PR
4. Respond to feedback: Address review comments promptly

Testing

Local Testing

Run the validation suite:

# Check all notebooks
uv run python scripts/validate_notebooks.py

# Check model usage
uv run python scripts/check_models.py

# Run pre-commit on all files
uv run pre-commit run --all-files

CI/CD

Our GitHub Actions workflows will automatically:

• Validate notebook structure
• Check for hardcoded secrets
• Lint code with ruff
• Test notebook execution (for maintainers)
• Check links
• Validate Claude model usage

External contributors will have limited API testing to conserve resources.

Getting Help

• Issues: GitHub Issues
• Discussions: GitHub Discussions
• Discord: Anthropic Discord

Security

• Never commit API keys or secrets
• Use environment variables for sensitive data
• Report security issues privately to security@anthropic.com

License

By contributing, you agree that your contributions will be licensed under the same license as the project (MIT License).