Add README

README.md

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-# task-6a22c713fd30e81cf315e9fe
+# LangGraph Tavily Comparison Agent
 
-LangGraph Tavily comparison agent
+## Description
+
+This repository contains a simple LangGraph agent that compares three entities using Tavily web search. The agent follows the assignment requirements:
+
+1. Generates comparison criteria based on the entities.
+2. Performs a Tavily search for each entity‑criterion pair.
+3. Builds a markdown table of findings.
+4. Provides a verdict.
+
+## Setup
+
+```bash
+pip install -r requirements.txt
+export TAVILY_API_KEY=your_key
+export OPENAI_API_KEY=your_key
+python main.py
+```
+
+## Usage
+
+Run `python main.py` to see a demo comparison of Tavily, Google, and Bing.