I launched 3 App in Toss mini apps in 29 hours—what happened over the next month (Claude Code)

From learning to code from scratch to publishing your app on Google Play—all in one place?! An all-in-one app-building course that bridges the fundamentals and hands-on practice.

Deterministically control AI agents through a 5-layer harness architecture and 4 workflow layers, and immediately apply a scalable project structure to real-world practice. (Based on Claude Code, but the same principles apply to other AI tools.)

From coding basics to running your own web service, all in one?! An all-in-one web-building course that bridges fundamentals and hands-on practice.

Have AI document its decisions and reasoning in the project wiki every time it works, safeguard that wiki, and check it to ensure it doesn’t break months later. Build the disclosure alert bot for real, establishing rules one by one whenever something goes wrong.

This course teaches non-developers how to properly build, operate, and monetize a service using Claude Code. It provides template repositories and operational know-how so that non-developers and beginner developers alike can use Claude Code at the level of the top 1% of developers. This course will be especially helpful for those who want to build a service with Claude Code at a truly “professional developer” level; those who want to create a service capable of generating revenue through a one-person business or side project; those who have built something powered by an AI agent like Claude Code but are stuck because they lack the know-how to operate it properly; and those who feel overwhelmed as their solo project grows because bugs keep occurring and things become difficult to control whenever they add new features. The course also covers how to build a foundation for monetization and provides guidance on operating the service under the assumption that real customers will be using it. Once you have actual customers, processes such as monitoring errors occurring on the production server, server status, and logs are essential. However, there are surprisingly few places that teach these processes. In my course, along with this kind of detailed and professional operational know-how, I also explain how to enable AI to observe these monitoring metrics and data and take appropriate action.

AI is only as good as you are. Learn vibe coding properly in three steps: how to use AI → essential foundational knowledge → project development. For those who want to learn vibe coding the right way, we deliver the core concepts that remain unchanged regardless of which AI you use, broken down into bite-sized pieces.

Figma Design + AI-Assisted Coding + Deployment Full-Stack Course!! [Figma + Vibe Coding (HTML/CSS/Tailwind/React) + Git + vercel Deployment] Your design, exactly as envisioned!! Complete it through vibe coding with zero deviation—not even 1 pixel! A full-stack guide to increasing your real-world productivity fivefold with AI! You can become a full-stack designer capable of both design and coding. ✅ Implement the intent behind your design with zero deviation—not even 1 pixel ✅ Design structures that AI can understand ✅ The ability to create prompts that precisely control AI ✅ The ability to effortlessly modify code written by AI as it pleases Experience the incredible transformation of shortening the process from design to coding and deployment to one-fifth of the time.

Integrate Claude Code into your terminal environment and provide the AI with project context using CLAUDE.md and Custom Skills, leveraging it as a true development partner. Go beyond simple code generation to master your AI engineering capabilities, covering everything from refactoring, MCP integration, and task automation to building real-world web applications.

This course teaches the essential CS knowledge required for web development using AI. If you don't understand the principles of servers, databases, and deployment, "Vibe Coding" will inevitably hit a wall at some point. Through interactive textbooks, you will quickly learn essential concepts, enabling anyone to complete a web project using Vibe Coding.

A practical introductory course on Claude Code for Unity developers! From installing Claude Code to Unity MCP integration, managing project conventions using CLAUDE.md, custom slash commands, and collaboration workflows—we will teach you everything you need to know for real-world application. Finally, you will gain hands-on experience effectively applying Claude Code to a Unity project by building a Survivor-style game from scratch.

No more AI toy projects that end with a single API call! Based on my experience designing and deploying a full-stack AI chatbot, I will guide you through the entire process of building an AI chatbot that "works as a real service"—covering streaming, tool calling, memory, multi-modal capabilities, and Human-in-the-Loop.

By developing a simple ReactNative app using the TDD methodology, you will learn the concepts of TDD and practice applying them to ReactNative mobile app development.

Learn how to automate daily tasks using AI tools and apply AI code to actual service development. We provide practical know-how that everyone from developers to non-developers can immediately apply to their own work environments.

Design by me, code by AI: Learn object-oriented design with Unity 6 and C#, Copilot / Claude prompting, and AI code verification to complete a 60-second survival 3D game. Become a game developer who knows how to work with AI.

Experience the entire process—from planning and design to development and deployment—using Claude Design and Claude Code. Complete “My Bookshelf,” a reading-tracker web app, without any coding knowledge, and learn how to create and share a working URL. In a single learning experience, you’ll gain the skills to turn your own ideas into web apps.

The complete React course where you learn the latest features of React 19 with TypeScript! From the basics to state management (Context, Redux Toolkit, Zustand), API communication (Fetch, Axios), the latest hooks (use, useActionState, useOptimistic, etc.), and real-world projects, you can learn step-by-step to build React apps that can be applied directly to professional work.

This course teaches you the latest Next.js v15 App Router while building a practical, Notion-based developer blog together. You’ll also gain various insights, including how to use Cursor AI.

You will experience the process of building an actual web service by combining various AI models such as Kimi, OpenCode, and Codex according to the situation. Beyond simple prompt input, you will learn practical development workflows for collaborating with AI, from requirement definition to code review and service completion, through hands-on practice.

From AWS EC2 backend operations to automatic error fixing, we are revealing the entire development process of Sidabari (https://github.com/cx8537/sidabari), a Claude Code-based automation tool. In this course, we provide all the actual prompts and conversation history used as learning materials, allowing you to experience the entire prompt input process involved in its creation.

How did Assistant Manager Kim, who worked overtime every day, become a "leave-on-time pro" in just 1 hour? The secret to reclaiming your "clock-out time" Staying up all night because an Excel formula broke, or having an entire report ruined by a single typo—every office worker has experienced this at least once, right? This course was designed to put an end to that "recurring pain." You don't need to memorize complex coding syntax. We utilize Cursor AI, an AI-powered tool that writes code based on text commands, and Streamlit, which allows anyone to easily create websites. I have captured the entire process of solving the "pain points" I personally faced in the field—such as merging files by branch, automatically classifying items for repair, and generating infinite PDF certificates—all by "conversing" with AI without typing a single line of Python code yourself. By the end of this course, you will be reborn not as a mere office worker, but as a "Digital Transformation Expert" who revolutionizes your team's work efficiency.