Claude Code Examples

# Start Claude Code in your project directory
cd my-new-project
claude

# Initialize project with best practices
> "Create a modern React TypeScript project with:
- Vite for build tooling
- ESLint and Prettier configuration
- Tailwind CSS for styling
- Jest and Testing Library for testing
- GitHub Actions for CI/CD
- Proper folder structure and documentation"

# Generate project documentation
/init

# Set up development environment
> "Configure development environment with:
- VS Code settings and extensions
- Git hooks for code quality
- Environment variables setup
- Docker configuration for consistency
- README with setup instructions"

# Plan the feature
> "I need to build a user authentication system. 
Help me plan the architecture, identify components, 
and create a development roadmap."

# Create feature branch
> "Create a new git branch for the auth feature 
and set up the initial file structure."

# Write tests first
> "Write comprehensive tests for the authentication 
system including login, logout, token validation, 
and error handling scenarios."

# Implement features
> "Implement the authentication logic to make 
all tests pass, following security best practices."

# Integration testing
> "Add integration tests and ensure the auth 
system works with the existing application."

# Code review preparation
> "Prepare this feature for code review by 
adding documentation and cleaning up the code."

# Codebase analysis
> "Analyze this legacy Java application and create 
a migration plan to Spring Boot 3 and modern practices. 
Identify dependencies, security issues, and technical debt."

# Architecture planning
> "Design a microservices architecture for this monolith. 
Create a phased migration strategy with minimal downtime."

# Module-by-module migration
> "Migrate the user authentication module to Spring Boot 3. 
Maintain backward compatibility and add comprehensive tests."

# Database migration
> "Update database schema and create migration scripts 
for the new microservice architecture."

# Modern React setup
> "Create a React TypeScript application with:
- Next.js 14 with App Router
- Tailwind CSS and Shadcn/ui
- React Query for state management
- Comprehensive testing setup"

# API development
> "Build a FastAPI backend with:
- SQLAlchemy ORM with PostgreSQL
- JWT authentication
- OpenAPI documentation
- Async request handling
- Comprehensive error handling"

# Infrastructure setup
> "Create Docker containers and Kubernetes 
manifests for deployment. Include:
- Multi-stage builds
- Health checks
- Horizontal pod autoscaling
- Monitoring and logging"