Update README.md

README.md

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-# task-6a1864fa8a94f887e50d46f0
+# Self‑correcting LangGraph Agent
 
-Экзамен: Самокорректирующийся агент
+This repository contains a small demo of a **self‑correcting LangGraph agent**. The agent receives a *task* string, executes it via an unreliable tool, then asks an LLM to judge the result. If the judge says the result is **failed**, the agent retries until it reaches a maximum number of attempts.
+
+## Features
+
+- **Unreliable tool** – 30 % chance of raising an exception.
+- **LLM judge** – forces the model to answer only `success` or `failed`.
+- **Retry logic** – automatically retries until success or a maximum number of attempts.
+- **LangGraph** – low‑level graph with three nodes: `execute_task`, `verify_result`, `handle_error`.
+
+## Setup
+
+```bash
+# Optional: create a virtual environment
+python -m venv venv
+source venv/bin/activate   # Windows: venv\Scripts\activate
+
+# Install dependencies
+pip install -r requirements.txt
+```
+
+## Running the Agent
+
+```bash
+python agent.py
+```
+
+You will be prompted to enter a task. The agent will then perform the task, verify the result, and retry if necessary. Example output:
+
+```
+Self‑correcting LangGraph agent demo
+Enter a task: 2+2
+
+--- Result ---
+Task: 2+2
+Attempts: 2
+Status: success
+Result: 22
+```
+
+## Project Structure
+
+- `agent.py` – main implementation.
+- `README.md` – this documentation.
+- `requirements.txt` – Python dependencies.
+
+## Notes
+
+- The LLM used is OpenAI's `gpt-4o-mini`. If you prefer Ollama, change the `ChatOpenAI` import to `ChatOllama` and adjust the model name accordingly.
+- The unreliable tool is a toy example; replace it with a real tool for production use.