add README.md

README.md

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-# task-6a1d75c5fd30e81cf3126ae7
+# FAQ Bot – ChromaDB + MCP Tool
 
+## Overview
+
+This repository contains a simple FAQ bot that answers questions about course materials using a local Chroma vector store and, when needed, calls a mock MCP‑style tool that returns course metadata.
+
+The bot is built with **LangGraph** and **LangChain** and uses **Ollama** embeddings (`nomic-embed-text`).
+
+## Prerequisites
+
+* Python 3.10+
+* Ollama server running locally with the `nomic-embed-text` model:
+  ```bash
+  ollama pull nomic-embed-text
+  ```
+
+## Installation
+
+```bash
+pip install -r requirements.txt
+```
+
+## Running the Bot
+
+```bash
+python main.py
+```
+
+You will be prompted to enter a question.  The bot will decide whether to answer from the FAQ documents (Chroma) or to call the mock MCP tool.
+
+## FAQ Files
+
+The `data/` directory contains three example Markdown files that are loaded into the vector store.
+
+## MCP‑style Tool
+
+The tool `fetch_course_meta` simulates an external MCP call by reading a local `course_meta.json` file.  In a real deployment this would be an HTTP request to an MCP server.
+
+## License
+
+MIT