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Build with Claude Code From zero to deployed apps with AI-assisted development (Taeho Jo) (z-library.sk, 1lib.sk, z-lib.sk)

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Build with Claude Code From zero to deployed apps with AI-assisted development (Taeho Jo) (z-library.sk, 1lib.sk, z-lib.sk)

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This hands-on guide helps you use AI-assisted development to create apps, automate workflows, and turn ideas into working software Key Features Build real-world apps using Claude Code with step-by-step guidance Learn AI-assisted workflows to design, iterate, and deploy applications Apply skills through diverse projects across real-life use cases Book Description You no longer need traditional programming experience to create real applications. This book introduces you to building software using Claude Code, where you will collaborate with AI to design, develop, and deploy applications from scratch. Starting with the basics, you’ll learn how to work effectively with AI assistants, structure prompts, and translate ideas into working software. As you progress, you’ll build a range of real-world projects from personal websites and portfolio apps to interactive tools and AI-powered applications. Each project is designed to reinforce practical skills while exposing you to modern development workflows. The book emphasizes a structured, step-by-step learning approach, guiding you through planning, iteration, debugging, and deployment. You’ll also explore advanced capabilities such as API integration, automation workflows, and AI agent-based development. Later chapters introduce MCP, plugins, and skills to extend Claude Code into a powerful development environment. By the end of this book, you won’t just understand AI-assisted development, you’ll confidently build, customize, and deploy your own applications. What you will learn Understand AI-assisted development and Claude Code workflows Write structured prompts that produce better results Manage projects with CLAUDE.md and custom commands Build AI-powered applications using external APIs Create specialized agents and AI development teams Connect tools and services through MCP servers Extend Claude Code using Skills and plugins Deploy database-backed apps with Vercel and Supabase

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Build with Claude Code From zero to deployed apps with AI-assisted development Taeho Jo
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Build with Claude Code Copyright © 2025 Packt Publishing All rights reserved. Original Korean language edition published by Hanbit, copyright © 2026 Hanbit N, Inc. English translation rights are authorized by Packt. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews. Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing or its dealers and distributors, will be held liable for any damages caused or alleged to have been caused directly or indirectly by this book. Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information. Portfolio Director: Pavan Ramchandani Portfolio Manager: Mohd Riyan Khan Project Manager: Divij Kotian Content Engineer: Rounak Kulkarni Technical Editor: Vidhisha Patidar Indexer: Pratik Shirodkar Proofreader: Rounak Kulkarni Production Designer: Vijay Kamble Growth Lead: Prajwal S First published: August 2026 Production reference: 1250826 Published by Packt Publishing Ltd. Grosvenor House 11 St Paul's Square Birmingham B3 1RB, UK. ISBN 978-1-80778-179-8 www.packtpub.com
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This book is dedicated to my wife and two daughters. Without their love and encouragement, neither the Korean edition nor this English edition would have been possible. – Taeho Jo
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Foreword I still remember the moment coding stopped feeling like typing. I had asked an AI agent to build something I would normally have scoped as two days of work: read the ticket, explore the codebase, write the fix, run the tests, explain the change. I watched it do all of that in the time it took me to finish a coffee. My first reaction was not excitement. It was the quiet, slightly uncomfortable recognition that my profession had just changed shape, and that everything I believed about how software gets built needed to be re-examined. I have spent the years since living inside that change. At Avanai, the company I co-founded, we build and deploy AI agents for some of the largest enterprises in Europe and US; a large part of my work is standing in rooms full of experienced engineers, consultants, and domain experts, teaching them to work with these tools. I have given this training in corporate headquarters and at developer meetups, to teams of five and audiences of hundreds. And I can tell you what I see in every single room: the gap is no longer between people who can code and people who cannot. The gap is between people who know how to direct an AI coding agent and people who are still typing everything themselves. Claude Code sits at the center of that shift. It is, to my mind, the clearest expression yet of what agentic coding means: not autocomplete, not a chat window that produces snippets for you to paste, but a genuine collaborator that reads your project, forms a plan, uses tools, checks its own work, and iterates. The first time you watch it navigate an unfamiliar repository and come back with a working change, you understand that the unit of software work is no longer the line of code. It is the intention, clearly expressed. That is precisely why a book like this matters, and why Taeho Jo is the right person to write it. What impressed me about Taeho is the arc of his career: a senior software engineer at Macromedia Korea (now part of Adobe) who became a bioinformatics researcher and professor, someone who has used computation his whole life not as an end in itself but as an instrument for solving hard, real problems in medicine and science. He is also a proven teacher. His earlier book on deep learning became a standard textbook at dozens of universities because he has the rare ability to make a complex subject feel learnable without making it feel small. He brings both halves to this book: the engineer who respects the craft, and the scientist who cares about what the craft is for.
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My advice for reading it is simple: do not read it. Work it. Keep Claude Code open in one window and this book in the other, and build something real as you go, however small. These tools reward practice over theory more than any technology I have ever taught, and the confidence you are looking for lives on the other side of your first twenty hands-on hours. This book is the most direct path I know to those hours being well spent. We are living through the greatest expansion of who gets to build software since the personal computer. It is a rare privilege to watch a door this large swing open. The book in your hands is an invitation to walk through it. Aemal Sayer AI Expert
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Contributors About the author Taeho Jo is an Assistant Professor at the Indiana University School of Medicine, where he applies deep learning to Alzheimer's disease research, from discovering genetic variants to analyzing brain imaging and biomarkers. He created SWAT and a family of models including Deep-Block, TrUE-Net, and DuAL-Net. He holds a PhD in computational biology. He is also the developer of AlphaGenome MCP, an open-source tool that connects the AlphaGenome genomics model with Claude Code and Claude Desktop, allowing scientists to run complex analyses using plain language. Before entering academia, he worked as a software engineer at Macromedia Korea, now part of Adobe. His Deep Learning for Everyone has been a bestseller and university textbook in Korea for years, while his guide to Claude Code reached number one in the IT category at major bookstores across the country. Build with Claude Code is the English edition of that book. I would like to thank my family for their patience and support during the long hours I spent on this book. I am also grateful to Dr. Andrew J. Saykin for suggesting a rare-variant study with AlphaGenome, which grew into the MCP and, ultimately, this book. At Packt, I would like to thank Mohd Riyan Khan for setting the direction of the book for English- speaking readers and guiding it through every stage of publication; Divij Kotian for smoothly managing the project from start to finish; and Rounak Kulkarni for his careful reading and valuable feedback on the manuscript. My thanks also go to the entire Packt team for their support throughout the publication process. This book began its journey in Korea, and I am also deeply grateful to the team at Hanbit Media who made it possible: Min-Ah Park, who led the editorial team and supported this book from the start; Jeongah Seok, whose careful and dedicated editing shaped the Korean edition, Hwa Jeong Seong, whose marketing helped this book reach its readers, and Yesol Hong, who supported the English edition throughout the process.
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About the reviewer Hari Prasad Renganathan is a Senior AI Engineer and 2x Founder specializing in Agentic AI, RAG systems, and AI platform architecture. A Columbia University graduate, he has built and deployed production AI systems across fintech, gaming, sales, and startups, including multi- agent systems used for complex financial and business workflows. He has also founded products used by thousands of users and mentors 900+ aspiring engineers. Beyond engineering, Hari is a TEDx speaker and creates practical AI content for a community of 70,000+ professionals.
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Table of Contents Preface xix Free benefits with your book ................................................................................................ xxiv Part 1: Foundations of Vibe Coding 1 Chapter 1: My First Vibe Coding 3 My coding partner, AI assistant ................................................................................................. 3 Before you begin • 4 Vibe Coding • 4 The emergence of AI integration tools • 6 Model selection type • 6 Dedicated model type • 7 Deep dive: the birth and evolution of AI • 8 Wrapping up • 9 Review questions • 9 Create my first webpage .......................................................................................................... 10 Before you begin • 11 Getting started with Claude • 11 Creating a webpage with Claude Artifacts • 13 Opening a new artifact • 13 Creating and publishing a web page • 15 Adding your own touch with customization • 22 Deep dive: Unlocking a more powerful AI partner with a Claude subscription • 26 Subscribing to a Claude paid plan • 26 Paid plan comparison • 28 Wrapping up • 29 Review questions • 30 Chapter 2: Maximizing AI's Potential with Effective Prompts 31 The secrets of prompts that awaken AI .................................................................................... 31
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Before you begin • 32 The importance of prompts • 32 Improving AI and prompts • 33 Drafting a product proposal • 35 Wrapping up • 39 Review questions • 39 Real-world application: completing your marketing portfolio ............................................... 40 Before you begin • 40 4-Step portfolio strategy • 41 Step 1: Framework • 41 Step 2: Features • 47 Step 3: Design • 49 Step 4: Verification • 52 Wrapping up • 56 Review questions • 56 Chapter 3: Getting Started with Claude Code 59 Installing Claude Code ............................................................................................................ 59 Before you begin • 60 Setting up the practice environment • 61 Installing Git on Windows • 61 Launching the terminal • 62 Claude Code • 62 Installing Claude Code on macOS and Linux • 64 Initial setup • 65 Your first conversation with Claude Code • 69 Claude Code desktop version • 71 Claude Cowork • 73 Why Claude Code? • 74 Wrapping up • 74 Review questions • 74 Building a handwriting recognition program ......................................................................... 75 Before you begin • 75 Preparing the Project Folder • 76 Running Claude • 77 Table of Contents x
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Creating a number recognition program with the MNIST dataset • 79 Writing Python code • 79 Running the program without Claude Code • 83 Wrapping up • 86 Review questions • 87 Expanding the program with CLAUDE.md ............................................................................. 87 Before you begin • 87 Understanding project configuration files • 88 Creating a project configuration file • 88 Structure of a project configuration file • 90 Modifying and using the configuration file • 91 Creating a web version handwriting recognition program using a hierarchical structure • 92 Understanding hierarchical structure • 92 Creating a hierarchical structure • 93 Completing the web version handwriting recognition program • 96 Wrapping up • 98 Review questions • 99 Chapter 4: Practical Use of Claude Code 101 Learning Claude Code commands with step-by-step prompts ............................................... 101 Before you begin • 102 Writing Step-by-Step Prompts • 104 Writing the PRD • 104 Converting to prompts • 105 Executing Step-by-Step Prompts • 106 Running Claude Code and initial setup • 106 Learn more: Claude initial setup commands • 123 /status • 123 /model • 123 /help • 124 Wrapping up • 124 Review questions • 125 Resuming work and increasing efficiency .............................................................................. 125 Before you begin • 126 Adding features • 126 xi Table of Contents
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Resuming a session • 126 Boosting work efficiency with Auto-Approve mode • 128 Checking the feature • 130 Managing context • 131 Wrapping up • 134 Review questions • 135 Project improvement and task management .......................................................................... 136 Before you begin • 136 Improving the desktop version app's UI with a capture image • 136 Sending an image to Claude Code • 136 Applying the desktop-optimized design • 140 Quickly reviewing code using references • 143 Analyzing code with the @ symbol • 143 Checking folder structure with the @ symbol • 145 Managing Claude Code projects • 146 Checking settings with the /config command • 147 Diagnosing your system with the /doctor command • 148 Exporting conversations with the /export command • 150 Wrapping up • 152 Review questions • 152 Part 2: From Projects to Real Services 155 Chapter 5: Systematic Development and Management Through Game Creation 157 Creating reliable AI content .................................................................................................. 158 Before you begin • 158 Step 1: Implementing the Quiz Game • 159 Writing a PRD for the Mini Game • 159 Implementing the quiz game • 161 Game testing • 163 Resolving hallucinations • 168 Establishing cross-verification guidelines • 172 Resetting the context • 175 Checking the Guidelines • 177 Table of Contents xii
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Wrapping up • 179 Review questions • 179 Boosting development efficiency through automation ......................................................... 180 Before you begin • 180 Step 2: Expanding the game • 180 Automating repetitive tasks with custom commands • 184 Custom commands • 185 Creating a command folder • 185 Creating your first custom command • 186 Extending custom commands • 188 Validating Only a Specific Category • 189 Analyzing a specific range only • 191 Automating the addition of new quiz questions • 193 Wrapping up • 196 Review questions • 197 Maintenance strategies learned through the use of custom commands ................................. 197 Before you begin • 198 Step 3: Data storage and ranking system • 198 Automating the game production workflow • 202 Quiz generation, analysis, and score aggregation • 202 Complete daily updates at once with an integrated custom command • 205 Custom commands created by Claude Code itself • 209 Building an efficient maintenance workflow • 212 Updating only existing custom commands • 212 Exporting the teacher mode report file • 213 Wrapping up • 215 Review questions • 215 Chapter 6: Giving Claude Code Wings with APIs 217 Configuring APIs in Claude Code ........................................................................................... 218 Before you begin • 218 API concepts and how to use them • 219 Selecting an AI Model • 220 Obtaining an API key • 221 Exploring free AI models • 225 xiii Table of Contents
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Exploring image recognition AI models • 227 Exploring text generation AI models • 229 Connect and test the AI model • 230 Wrapping up • 234 Review questions • 234 FridgeChef: built with Claude Code and API ......................................................................... 235 Before you begin • 235 Writing a PRD for application implementation • 235 Establishing a step-by-step plan • 236 Wrapping up • 252 Review questions • 252 Chapter 7: Building a Development Team with Claude Code AI Agents 253 Understanding AI Agents ...................................................................................................... 254 Before you begin • 254 My first agent: the code reviewer • 255 Claude Code subagents • 255 Creating a code reviewer agent • 256 Code review with a sub-agent • 261 Optimization agent • 262 UX Design agent • 264 Testing sub-agent collaboration • 265 Collaboration between sub-agents • 266 Testing the application • 268 Learn more: Backing up your work • 273 Wrapping up • 274 Review questions • 274 Automating software development with AI Agents ............................................................... 275 Before you begin • 275 Building your own AI development team • 275 Composition and roles of a software development team • 275 Creating sub-agents • 276 Building an application with an agent team: 'AI Empathy Diary' • 280 Organizing product requirements with the 5W1H framework • 280 Table of Contents xiv
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Building an application with an agent team: PDF Summary AI • 286 Wrapping up • 292 Review questions • 292 Chapter 8: Extending Claude Code with MCP, Skills, and Plugins 295 Understanding MCP and Connecting to Claude Code ........................................................... 296 Before you begin • 296 How MCP expands AI capabilities • 297 Connecting Claude Code with Notion • 298 Signing up for Notion • 299 Installing the Notion MCP server • 300 Completing the connection with MCP server authentication • 303 Automatically creating research notes with Notion MCP • 306 Building Smarter AI with Sequential Thinking MCP • 308 Understanding local MCP and remote MCP • 308 Understanding the Local MCP installation commands • 309 Installing and using the Sequential Thinking MCP • 310 Checking the performance of the Sequential Thinking MCP • 311 Wrapping up • 313 Review questions • 314 A fully automated development environment implemented with plugins and skills ............. 314 Before you begin • 315 Claude's skills • 315 Creating a skill • 316 Using other skills • 318 Plugins and marketplace • 319 Creating a shopping list app • 320 Running automated tests with the Playwright plugin • 322 Installing from the marketplace • 325 Adding the anthropics-skills Marketplace • 325 Installing the document-skills plugin • 326 Using the document-skills plugin • 328 Permanently archive your project with the GitHub MCP • 329 Finding the GitHub MCP installation command • 329 Obtaining a GitHub API token • 330 xv Table of Contents
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Completing GitHub MCP installation • 331 Uploading your project • 332 Wrapping up • 334 Review questions • 334 Connecting a database to create a real service ....................................................................... 335 Before you begin • 335 Deploying your own webpage • 335 Creating a Vercel account and connecting to GitHub • 336 Deploying the project • 340 Checking your deployed website • 343 Connecting the application to a database • 344 Sign up for Supabase and create an organization • 347 Installing the Supabase MCP Server and Generating an API Token • 349 Upgrading the shopping list app to a real service • 352 Automatically connecting to the database with Claude Code • 352 Verifying database table creation • 355 Checking real-time synchronization with the database • 356 Wrapping up • 359 Review questions • 359 Chapter 9: Answers to Review Questions 361 Chapter 1, My First Vibe Coding ............................................................................................. 361 My coding partner, AI assistant • 361 Create my own first webpage • 362 Chapter 2, Maximizing AI's Potential with Effective Prompts ............................................... 362 The secrets of prompts that awaken AI • 362 Real-world application: completing your marketing portfolio • 362 Chapter 3, Getting Started with Claude Code ........................................................................ 362 Installing Claude Code • 362 Building a handwriting recognition program • 362 Expanding the program with CLAUDE.md • 363 Chapter 4, Practical Use of Claude Code ................................................................................ 363 The secrets of prompts that awaken AI • 363 Resuming work and increasing efficiency • 364 Project improvement and task management • 364 Table of Contents xvi
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Chapter 5, Systematic Development and Management Through Game Creation .................. 365 Creating reliable AI content • 365 Boosting development efficiency through automation • 366 Maintenance strategies learned through the use of custom commands • 366 Chapter 6, Giving Claude Code Wings with APIs ................................................................... 366 Configuring APIs in Claude Code • 366 FridgeChef: built with Claude Code and API • 366 Chapter 7, Building a Development Team with Claude Code AI Agents ................................. 367 Understanding AI Agents • 367 Automating software development with AI Agents • 367 Chapter 8, Extending Claude Code with MCP, Skills, and Plugins ......................................... 367 Understanding MCP and Connecting to Claude Code • 367 A fully automated development environment implemented with plugins and skills • 368 Connecting a database to create a real service • 368 Chapter 10: Unlock Your Exclusive Benefits 369 Unlock this book's free benefits in 3 easy steps ..................................................................... 370 Other Books You May Enjoy 374 Index 377 xvii Table of Contents
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Preface Not long ago, building software meant one thing: learning to code first. You could have a clear picture of what you wanted to build and still be stopped at the door because you did not speak the language of programming. AI-assisted development has changed that. With Claude Code, the conversation itself becomes the interface, and describing what you want is the first real step toward building it. This book is a hands-on guide to that way of working, often called vibe coding. You will not read about it in the abstract; you will build. A webpage in Chapter 1. A marketing portfolio in Chapter 2. A handwriting recognition program in Chapter 3, a to-do app in Chapter 4, and a quiz game in Chapter 5. By Chapter 6, you will be connecting AI models through APIs. In Chapter 7, you will be directing a team of AI agents, and in Chapter 8, you will deploy a database-backed service that anyone can open in a browser. Along the way you will learn the things that separate a lucky result from a repeatable one: writing prompts that get what you actually want, keeping AI honest about the content it generates, managing projects with CLAUDE.md and custom commands, and extending Claude Code with MCP servers, skills, and plugins. Along the way, you will learn what separates a lucky result from a repeatable one: writing prompts that get you what you actually want, verifying AI-generated content, managing projects with CLAUDE.md and custom commands, and extending Claude Code with MCP servers, skills, and plugins. The goal is not to turn you into a traditional programmer. It is to make you someone who can turn an idea into working software, with AI as a genuine development partner rather than just an assistant. Who this book is for Whether you're a beginner or an experienced professional, this book equips you with the skills to turn ideas into real, working software. It is ideal for product managers, marketers, researchers, educators, entrepreneurs, and anyone interested in AI-assisted development. Early-career software engineers will also find it valuable. If you've ever wanted to build applications but felt limited by your coding skills, this book provides a practical and accessible path to get started.
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