Добавлен README.md

README.md

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-# stream-rezhim-ai-agenta
+# Stream‑Mode AI Agent
 
-Решение: Stream-режим AI-агента
+A lightweight LangChain agent that prints its output **as it is generated** using the `.stream()` API.
+The project demonstrates how to replace a single `.invoke()` call with streaming so that users see partial responses in real time.
+
+> **Why stream?**  
+> When an LLM produces long answers or calls multiple tools, waiting for the whole result can feel like a freeze. Streaming gives instant feedback and improves UX.
+
+---
+
+## 📦 Project Structure
+
+```
+.
+├── agent.py   # Agent definition with streaming support
+├── client.py  # Simple CLI to interact with the agent
+└── README.md
+```
+
+- **agent.py** – creates an agent that uses a single tool (`get_price`) and streams its output.  
+- **client.py** – runs the agent in a loop, reading user queries from stdin.
+
+---
+
+## ⚙️ Prerequisites
+
+| Item | Version |
+|------|---------|
+| Python | 3.10+ |
+| pip | latest |
+| LangChain | `>=0.2.0` |
+| Rich | `>=13.0` |
+
+> **Tip:** Use a virtual environment to keep dependencies isolated.
+
+---
+
+## 🚀 Installation
+
+```bash
+# Clone the repo (or copy the files)
+git clone https://github.com/your-username/stream-agent.git
+cd stream-agent
+
+# Create and activate a venv (optional but recommended)
+python -m venv .venv
+source .venv/bin/activate   # Windows: .venv\Scripts\activate
+
+# Install dependencies
+pip install --upgrade pip
+pip install langchain rich
+```
+
+> If you plan to use an OpenAI model, set the API key:
+> ```bash
+> export OPENAI_API_KEY="sk-..."
+> ```
+
+---
+
+## 📖 Usage
+
+Run the client script and type your questions. The agent will stream its answer token‑by‑token.
+
+```bash
+python client.py
+```
+
+Example session:
+
+```
+$ python client.py
+Enter your query (Ctrl+C to exit):
+> What is the price of Bitcoin today?
+
+Agent: Checking price...
+Agent: Current BTC price is $42,300.00
+```
+
+The output appears progressively as the LLM generates it.
+
+---
+
+## 🛠️ Customization
+
+- **Add more tools** – decorate a function with `@tool` and pass it to `create_agent`.
+- **Change model** – modify the `model_name` argument in `agent.py`.
+- **Adjust streaming format** – tweak the `stream()` call or use Rich’s live rendering for fancy UI.
+
+---
+
+## 📄 License
+
+MIT © 2026
+
+---