create-llama/python/llama-index-server/examples/simple-agent

A simple chat app

This guide explains how to set up and use the LlamaIndex server with a simple chatbot agent.

Prerequisites

• uv installed (a fast Python package manager and runner)
• An OpenAI API key

Steps

1. Set the OpenAI API Key

   Export your OpenAI API key as an environment variable:

   export OPENAI_API_KEY=your_openai_api_key_here
   

2. Run the Server Using uv

   Start the server with the following command:

   uv run workflow.py
   

   This will launch the FastAPI server using the workflow defined in main.py.

3. Access the Application

   Open your browser and go to:

   http://localhost:8000
   

   You will see the LlamaIndex chat app UI, where you can interact with the agent.