How I Built a Databricks AI Agent with No Custom Tables (OpenAI Agents SDK + Gradio)

Most Databricks agent tutorials start with "set up Unity Catalog and Vector Search first." OpenAI Agents SDK (with AsyncOpenAI — important, sync breaks it) Databricks Model Serving (Llama 3.3 70B via OpenAI-compatible endpoint) Databricks SQL Connector (not Spark — Apps have no Spark context) MLflow