# 🤖 Simple AI Chatbot using LangChain + OpenRouter (Python)

This is a basic Python project that shows how to use **LangChain** with **OpenRouter** to create a simple AI assistant.  
The AI answers questions in **easy, simple words**, making it perfect for beginners learning AI integration

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## ✅ Features

- Uses **LangChain** for AI interaction  
- Uses **OpenRouter API** (free model supported)  
- Takes a question and prints the AI reply in the terminal  
- Beginner-friendly and easy to understand  

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## 🧑‍💻 Requirements

Make sure you have:

- Python **3.9+** installed  
- An **OpenRouter API Key**

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## 📦 Install Required Libraries

Run this command in your terminal:

```bash
pip install langchain langchain-openai python-dotenv

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🔐 Setup Environment Variable

1. Create a file named .env in your project folder
2. Add your OpenRouter API key inside it:

OPENROUTER_API_KEY=your_api_key_here

⚠️ Never share your API key publicly.

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▶️ How to Run the Project

Run the following command in your terminal:

python createagent.py

You will see the AI response printed in the terminal.

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🧠 Example Question Used

user_question = "What is artificial intelligence in simple terms?"

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✅ Example Output

Artificial intelligence is when computers are taught to think and learn like humans to do tasks such as answering questions, recognizing images, or making decisions.

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📁 Project Structure

langchain-tutorials/
│
└──.env
└── python_langchian_example/
    │
    ├── createagent.py
    └── README.md

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🎯 Who Is This For?

• Beginners learning LangChain
• Students exploring AI integration
• Developers testing OpenRouter with Python

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📜 License

This project is free to use for learning and educational purposes.