LangGraph Chatbot

A simple Streamlit-based AI assistant powered by LangGraph and Google Gemini.

Live Demo: langgraph-chatbott.streamlit.app

Features

• Conversational AI using LangGraph and Gemini
• Clean, familiar chat UI (no streaming)
• Session-based chat history
• Easy to reset conversation

Setup Instructions

1. Clone the repository

   git clone https://github.com/04bhavyaa/langgraph-chatbot.git
   cd langgraph-chatbot

2. Install dependencies

   pip install -r requirements.txt

3. Set your Google API Key

   • Create a .env file in the project root:

     GOOGLE_API_KEY=your-google-api-key-here

4. Run the app

   streamlit run streamlit_frontend.py

Troubleshooting

• If the app spins forever or shows "Chatbot unavailable", check your GOOGLE_API_KEY and internet connection.
• Make sure all dependencies in requirements.txt are installed.
• For debugging, check the logs in the terminal and Streamlit UI.

File Structure

• langgraph_backend.py — Backend logic for LangGraph chatbot
• streamlit_frontend.py — Streamlit UI for chat
• requirements.txt — Python dependencies
• .env — Your API key (not committed)