CHAPTER 01 Getting Started with No-Code AI and Dify
[Lesson 01] Why No-Code AI Now?
Why AI Service Development Was Difficult
The Turning Point Created by Generative AI and APIs
The Beginning of the No-Code Revolution
[Lesson 02] The Era of AI Business Success Without Developers
The stark difference between past and present
No-code AI Success Stories
A New Formula for Success in the No-Code AI Era
[Lesson 03] Before starting Dify
How to Use AI Beyond ChatGPT
Solutions provided by Dify
What we'll learn in this chapter
[Lesson 04] Dify's Key Features and Utilization
What can you create with Dify?
Dify's 4 Core Features
Real-World Use Cases You Can Create with Dify
[Lesson 05] Getting Started with Dify Web
Getting Started with Dify
Sign up for Dify and explore your dashboard
[Lesson 06] Issuing an OpenAI API Key
Why You Need an OpenAI API Key
Understanding the OpenAI API Pricing Structure
API key issuance procedure
Current rate information
Precautions when issuing API keys
CHAPTER 02 Chatbot
[Lesson 01] Understanding Chatbot Basics
Understanding How Chatbots Work
Chatbots we'll create in this chapter
[Lesson 02 | Choosing an LLM Model
Understanding and selecting models
Characteristics of commercial and open models
Understanding and Importance of Tokens
Key model features and selection guide
[Lesson 03] Setting up an LLM model in Dify
Why link your API key to Dify?
Connecting OpenAI Models to Dify
[Lesson 04] Exploring Various Prompts
What is a prompt?
Persona Prompt
Virtual Hyperparameter
Few-shot Prompt
Chain of Thought
Markdown Prompt
Understanding the prompt structure in Dify
[Lesson 05] The Mischievous Chatbot
Why should we give our chatbots personalities?
Creating a Chatbot
The power of prompts to change speech
Start the conversation with a welcome message and opening questions.
App distribution, sharing, and discovery features
[Lesson 06] Business Email Proofreading Chatbot
Understanding Variables That Reduce Repetitive Tasks
Creating a Chatbot
[Project] Fashion Style Recommendation Chatbot
CHAPTER 03 RAG
[Lesson 01] Understanding the Basics of RAG
Why RAG is needed
Understanding how the RAG system works
Knowledge base building process
Q&A Process
The RAG system we will create in this chapter
[Lesson 02] RAG Chatbot Based on AI Industry Trends
Why You Need a Knowledge Base
Download file
Obtaining Cohere API
Create a knowledge base
Creating a Chatbot
[Lesson 03] RAG Chatbot Based on Personnel Law
Download file
Create a knowledge base
Creating a Chatbot
[Project] Year-end Tax Settlement-Based RAG Chatbot
CHAPTER 04 Agent
[Lesson 01] What is an AI Agent?
Concept and Definition of AI Agents
Comparison of Traditional Chatbots and AI Agents
[Lesson 02] AI Agent Behavior Mechanism
How AI agents work
ReAct pattern
[Lesson 03 Configuring Agent Prompts
Differences Between Chatbot Prompts and Agent Prompts
Instruction structure that agents can understand
How to Write Effective Agent Prompts
[Lesson 04] Why are AI agents attracting attention?
Intelligent secretary-like characteristics that differentiate it from existing chatbots
Four Key Advantages of AI Agents
[Lesson 05] Agent Technology Trends at Major Companies
Development status by major company
Background of the development of agent technology
Agents we will create in this chapter
[Lesson 06] Tools Overview
Dify's various tools
Explore the tools
Connecting Tavily's API Key to Dify
Connecting Firecrawl's API Key to Dify
[Lesson 07] Latest Information Search Agent
Add a web search tool
Create an agent
[Lesson 08] Search Agent for the Latest US Global Trends
Public Data Portal Authentication Key Issuance
Creating an OpenAPI schema
Creating custom tools
Upgrade your agent
[Lesson 09] Naver Blog Summary Agent
MCP(Model Context Protocol)
Apply for Naver API
Setting up a Naver API Key MCP Connection
Adding an MCP Server in Dify
Upgrade your agent
[Project] Competitor Analysis Agent
CHAPTER 05 WORKFLOW
[Lesson 01] What is a Workflow?
Concept and definition of workflow
The Difference Between Chatbots, Agents, and Workflows
Workflow Features
[Lesson 02 | Dify's Workflow
Four core features
Workflow and Chat Flow
[Lesson 03 | Exploring Nodes
What is a Node?
Workflow and chat flow to be created in this chapter
[Lesson 04] Idea Generation Workflow
Preparing for Your First Workflow Practice
Create a workflow
[Lesson 05] Document Summarization and Keyword Extraction Workflow
What is iterative processing?
Preparing for a Repeated Workflow Practice
Create a workflow
[Lesson 06] Shopping Mall Consultation Chat Flow
What is branch processing?
Characteristics of branch processing method
Preparing for a Branch Chat Flow Practice
Creating a Chat Flow
[Lesson 07] Parallel Search Chat Flow
What is parallel processing?
Preparing for a Parallel Chat Flow Practice
Creating a Chat Flow
[Project] Review Analysis Workflow
CHAPTER 06 Practical Project Application
[Lesson 01] Task Automation Agent with Zapier
Why You Need to Automate Your Work
Sign up for Zapier
Integrate Gmail and Zoom with Zapier
Integrate Zapier MCP with Dify
Create an agent
[Lesson 02] Card News Production Workflow
Why You Need a Card News Workflow
Installing OpenAI Tools
Create a workflow
[Lesson 03] News-Based SNS Content Chat Flow
Why You Need a Chat Flow for Your SNS Posts
Creating a Chat Flow
APPENDIX
[Lesson 01] Installing Dify on My PC
Things to know before installing
Installing Docker Desktop
Installing Git
Installing Dify
[Lesson 02] Installing Local LLM Ollama
What is Ollama?
Installing Ollama
Installing the LLM Model
[Lesson 03] Qwen3 Chatbot on Local Dify
Connecting the Ollama Model to Dify
Creating a Chatbot
In closing this book

▶ Korea's first practical guide to Dify! Braincrew AI consultants teach you how to build real AI apps.
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This book covers everything about Dify, a no-code platform that lets you develop AI apps using drag-and-drop, without a single line of code.
We introduce practical know-how proven in corporate training to perfectly implement chatbots, agents, and workflow automation.
Discover the key insights into utilizing Dify from Brain Crew's AI education consultant, Jeongwook Kim.
- A proven platform that powers over 1 million AI apps worldwide.
- Trust chosen by over 10,000 corporate teams
- 3. Create AI apps with drag-and-drop, no coding required.
- Net, a smart chatbot that learns company documents with RAG.
- Five, AI agents capable of real-time web search
- Six, workflows that automate complex tasks.
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▶ 18 completed project files + dedicated Notion workspace + practice data provided!
Don't start alone and in a daze.
Upload your completed DSL file and check the results right away.
You'll get all the prompts and practice guides for free, forever, in your dedicated Notion workspace.
We've even prepared practice data and sample websites so you can get started right away.
____
▶ ChatGPT only provides conversations, while Dify creates complete AI services!
▶ Zero coding knowledge! Master everything from RAG to Agent with 18 projects.
▶ A highly recommended practical guidebook by Teddy Note's Lee Kyung-rok, After-Work Doing Things Kim Tae-heon, and Cursor AI's Seo Seung-wan.
The AI ​​gap is widening.
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____
▶ Build your AI app in just a few clicks with our visual interface! Zero barriers to entry.
▶ Practical application of RAG technology to learn 500 pages of company documents in an instant
▶ Chatbots, agents, workflow automation, and external integration—all in one book!
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Need to automate your customer support? Create a chatbot in 10 minutes.
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▶ A complete curriculum that enables even non-developers to become AI app creators.
▶ Step-by-step learning design proven in practical training fields!
After completing 18 projects (15 basic exercises + 3 advanced applications), you too can become an AI app developer.
All prompts and workflows in this book are designed for immediate use, and complete files are provided so you can experience the results firsthand. Learn from creating a RAG chatbot, deploying AI agents, and automating complex tasks with a hands-on approach.
We'll guide you on your way to becoming a Dify master with friendly instructions that even beginners can follow without any difficulties.

===
◆◆ [Dify Introduction: Why Dify Now?] ◆◆
Let's start by understanding the crucial differences between ChatGPT and Dify.
Experience the power of Dify beyond simple conversational AI to document learning, web search, automation, and deployment.
We clearly define the concepts and usage scenarios of the three core modes: Chatbot, Agent, and Workflow.
____
◆◆ [Practical Project: Build Your Foundation with 15 Key Practices] ◆◆
You'll create hands-on, practical projects, including building a document-based chatbot that learns 500 PDF pages using RAG technology, building a real-time information agent equipped with the Tavily search engine, a fully automated shopping mall customer support system, and a sentiment analysis workflow that analyzes hundreds of reviews.
Solve a variety of business scenarios with Dify, including idea generation, document summarization, and keyword extraction.
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◆◆ [Advanced Application: Complete Business Innovation with 3 Projects] ◆◆
Zapier integration enables complete unmanned automation from email reception to data processing to result delivery.
We've completed a workflow for card news production that handles everything from brand image creation to copywriting, and an automated system that collects the latest news in real time and reprocesses it into social media content.
The appendix provides detailed instructions on how to set up a cost-free learning environment, from installing Dify on your local PC to utilizing Ollama's free LLM.
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From introductory to practical, advanced applications! If you want to experience true productivity in the AI ​​era without a single line of code, this book is the perfect starting point.