Create your own assistant without coding Part 1: The ultimate guide to AI agents starting with Dify
Everywhere you go these days, there is talk of AI. However, when I try to use it in my work, I often run into barriers such as having to write Python code or connecting to an API. I have used many tools over the past 20 years, but no matter how good the technology is, if it is not easy to use, it ends up in the trash.
Dify, which we are introducing today, is a ‘thing’ in that respect. Even if you don’t know a single word of coding, you can create your own smart assistant with a few mouse clicks. We will explain very easily from a veteran's perspective how to properly use this hottest tool in 2026.
1. Why has Dify become a trend in 2026?
There are already great AIs like ChatGPT and Claude in the world. But why should I bother using Dify? The reason is clear. It’s because of ‘connection’ and ‘memory’.
- Work like a real secretary (RAG technology): If you ask ChatGPT “How much was our company’s sales last year?”, it won’t know. However, if you send Excel or PDF to Dify, it will provide an accurate answer based on our company data. The technical term for this is RAG (Search Augmented Generation), but you can just understand it as a ‘trained assistant.’
- Security is Life (Self-hosted): Are you tired of uploading your important business data to the cloud? Dify can be installed (Docker) directly on your computer or in-house server. The biggest appeal is that you can use it as much as you want without worrying about data leaks.
- Visual workflow: When doing complex tasks, just connect the lines as if drawing a mind map. The intuitive interface introduced from the 2025 version is impressive.
2. Just follow: Dify installation detailed guide
There are many beginners who give up because they are afraid of installation. Let's finish it in just 3 steps. If you are a Windows user, just install ‘Docker Desktop’ first.
Step 1: Import source code
Open a command window (Terminal) and copy and paste the following.
git clone https://github.com/langgenius/dify.git
cd diff/docker
Step 2: Preferences (Veteran's Tips)
Copy the configuration file .env.example to .env.
cp .env.example .env
Here's a tip! Open the file and write any long English character in the SECRET_KEY section. Security becomes much stronger.
Step 3: Run!
docker compose up -d
Now you're done. Type localhost in your browser address bar and Dify will welcome you.
3. Practical project: “Analyst summarizing the news every morning”
Now let's create an agent. It's not just a chatbot, it's a guy that directly roams the web and collects information.
1) Create app: Select ‘Create app’ in the upper left corner -> ‘Agent’. The 2026 Dify supports the ReAct reasoning method, which is the secret to “teach one and know ten.”
2) Install Tool: Add ‘Tavily Search’ in agent settings. This tool is like a magnifying glass specifically for AI. It removes advertisements from the Internet and provides only useful information.
3) Write instructions: Determine the role for AI. The biggest mistake beginners make is just saying “work hard.” Write it down like below.
"You are a business reporter with 20 years of experience. When a user throws in a keyword, find 5 news stories from today and summarize them. Don't just summarize, but organize 'why today's news is important' in three separate lines. Keep your tone of speech simple and professional, business-like."
4) Knowledge Connection: If you have a folder of scraps you have collected, upload them here. The agent's intelligence increases tenfold.
4. Final details that increase practical usability
If you're creating a secretary, readability is key. When agents give answers, instructing them to divide paragraphs into short paragraphs or organizing key content in a table format will greatly improve readability.
Dify is not just a trendy tool. It is the most powerful tool to add 25 hours to your day. Even if the first setup is a little unfamiliar, try to succeed just once. After that, AI will work for you 24 hours a day.
In the next article, we will cover n8n automation, which gives this assistant tasks such as ‘sending emails’ or ‘Slack notifications’. If you have any questions, please feel free to ask in the comments.