# FAQ Bot with ChromaDB and LangChain

This project implements a simple FAQ bot that uses **ChromaDB** for vector storage and **LangChain** for building an intelligent agent. The bot can answer questions based on a small knowledge base stored in ChromaDB.

## Features

- Stores documents in ChromaDB with embeddings from OpenAI.
- Uses the latest LangChain agent creation method (`initializeAgentExecutorWithOptions`).
- Simple CLI interface for interacting with the bot.
- Easy to extend with more documents or tools.

## Setup

1. **Clone the repository**

   ```bash
   git clone https://github.com/your-username/faq-bot-chromadb.git
   cd faq-bot-chromadb
   ```

2. **Install dependencies**

   ```bash
   npm install
   ```

3. **Configure environment**

   Create a `.env` file in the project root:

   ```env
   OPENAI_API_KEY=your_openai_api_key
   CHROMA_DB_PATH=./chromadb
   ```

4. **Run the bot**

   ```bash
   npm start
   ```

   You can also use `npm run dev` for automatic restarts with nodemon.

## Adding Documents

The bot comes with two sample FAQ entries. To add more, edit `src/index.js` or use the `addDocument` function from `src/vectorstore.js`.

## License

MIT License