# README.md
# LangGraph Code Review Agent

This repository implements a **LangGraph** agent that takes a Python function as input and produces a code review. The review is evaluated by a critic node that scores it on four criteria:

1. **PEP8 compliance**
2. **Type hints**
3. **Edge case handling**
4. **Naming conventions**

If the critic returns **`needs_revision`** the rewrite node improves the weakest part of the review. The process repeats up to ``max_rounds`` times.

The implementation uses only the technologies specified in the assignment: ``langgraph`` and ``langchain-ollama`` (or ``langchain-openai`` if you prefer). No vector database is used.

## Installation

```bash
pip install -r requirements.txt
```

## Demo

Run the demo with:

```bash
python main.py
```

It will review the example function ``sort_numbers`` and print the draft review, scores, and verdict.