Claude Code Examples & Templates: Ready-to-Use Patterns

Copy these Claude Code examples and start building immediately. Each template is production-tested and demonstrates patterns that work in real projects. No tweaking required.

Quick Start Web App

Build a complete React application in minutes with this template:

claude "Create a React todo app with TypeScript and Tailwind CSS. Store todos in localStorage. Include add, edit, delete, mark complete, and filter by status. Make it mobile-responsive."

This generates:

• TypeScript React components
• Tailwind CSS styling
• Local storage integration
• Full CRUD operations
• Responsive design

Perfect for prototyping or learning React patterns. Expand it into a full project by adding authentication or API integration using our Configuration Basics guide.

API Backend Template

Create a Node.js Express API with authentication:

claude "Build an Express.js REST API with JWT authentication. Include user registration, login, and logout endpoints. Hash passwords with bcrypt. Add middleware for protected routes and centralized error handling."

You'll get:

• JWT token authentication
• Password hashing with bcrypt
• Input validation middleware
• Error handling patterns
• Protected route examples

This template handles the security basics so you focus on business logic. Scale it further with database integration covered in our First Project tutorial.

Database Schema Generator

Generate PostgreSQL schemas with relationships:

claude "Create a PostgreSQL schema for an e-commerce app. I need users, products, orders, and order_items tables with proper foreign keys. Add indexes for common queries and include sample INSERT statements for testing."

Creates:

• Normalized table structures
• Foreign key relationships
• Performance indexes
• Sample INSERT statements
• Proper data types

Use this pattern for any domain - just replace "e-commerce" with your use case. When you're ready to implement, check our Installation Guide for database setup.

Testing Framework Setup

Generate complete test suites with this template:

claude "Set up Jest and React Testing Library for a TypeScript React project. Include example unit tests for a Button component, integration tests with mocked API calls, and factory functions for test data. Add test and test:coverage scripts to package.json."

This provides:

• Jest configuration
• Component testing utilities
• API mocking patterns
• Test data generators
• NPM script automation

Essential for production applications. Learn more about project structure in our Configuration Basics.

Mobile-First Responsive Template

Create mobile-optimized layouts instantly:

claude "Build a responsive landing page with mobile-first design. Include a hero section with CTA, three feature cards, a testimonials carousel, and a contact form. Use CSS Grid for layout and Flexbox for components. Add breakpoints at 640px, 768px, and 1024px."

Generates:

• Mobile-first CSS patterns
• Responsive grid layouts
• Modern flexbox usage
• Cross-browser compatibility
• Accessibility basics

Common Development Patterns

Error Handling Template

claude "Create an error handling system for a Node.js Express app. Include custom error classes for validation, authentication, and not-found errors. Add async error wrapper, Winston logging, and JSON error responses with proper HTTP status codes."

State Management Setup

claude "Set up Redux Toolkit with TypeScript for a React app. Create store configuration, a userSlice with login/logout actions, and an appSlice for UI state. Include an async thunk for fetching user data and show how to use useSelector and useDispatch in components."

Form Validation Pattern

claude "Create a signup form with React Hook Form and Zod validation. Include fields for name, email, and password with real-time error messages. The password needs 8+ characters, one uppercase, and one number. Show loading state on submit and infer TypeScript types from the Zod schema."

Usage Tips

Be Specific: The more details you provide, the better results you get. Include technology stack, specific features, and any constraints. "Add a dark mode toggle" is better than "make it customizable."

Iterate Fast: Use these templates as starting points, then refine with follow-up requests. "Add user authentication to this" or "Convert the styling to Tailwind" work naturally in conversation.

Combine Patterns: Mix templates for complete solutions. Start with the web app, add the API backend, then integrate the database schema. Claude Code maintains context across requests.

What's Next?

These templates solve common development challenges, but Claude Code handles any project structure you throw at it. Got stuck? Check our Troubleshooting guide for solutions.

Ready to customize these patterns for your specific stack? Our FAQ section covers project customization and optimization techniques.