# LangGraph research brief generator

## Overview

This repository contains a LangGraph agent that generates a connected research brief on a single topic. The agent:

1. Uses an LLM to generate concise section headings for the brief.
2. For each heading, performs a Tavily web search to fetch relevant content.
3. Aggregates the sections into a single Markdown brief with a summary.

The agent is implemented in `src/main.py` and can be run from the command line.

## Requirements

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

The following environment variables must be set:

- `OPENAI_API_KEY` – key for the OpenAI model used by LangChain.
- `TAVILY_API_KEY` – key for the Tavily API.

## Usage

```bash
# Default demo – generates a brief on "Artificial Intelligence"
python -m src.main

# Custom topic
python -m src.main "Quantum Computing"
```

The script prints the generated brief in Markdown format.