I Built a Multi-Agent Insurance Support Streamlit Chatbot on Databricks-Full Code Walkthrough

LangGraph + Claude Sonnet 4.6 + Vector Search + Lakebase PostgreSQL, from first cell to live endpoint Insurance customer is one of those domains that sounds simple until you try to automate it properly. A customer asks about their billing-you need their policy number, the current pending bill, the premium frequency, and then a clean human-readable answer. Another customer asks what life insurance covers in general-no account lookup needed, just a well-grounded FAQ response. A third says they want to speak to a human.