Building Intelligent Agents with LangGraph and MongoDB: A Deep Dive into Vector-Powered Tool Discovery

When building AI agents, one of the biggest challenges is tool selection—especially as the number of available tools increases. Evidence from OpenAI’s developer community and technical documentation highlights that agents’ tool selection accuracy tends to drop noticeably with larger toolsets, sometimes causing irrelevant or random tools to be invoked even with carefully designed prompts. OpenAI’s internal discussions note a clear decline in single-tool call accuracy and an uptick in failure modes as the system prompt and available tool list grows, with developer complaints of incorrect or unexpected tool choices despite best practices. ...

September 25, 2025 · 6 min · Ben Karciauskas

Getting Started with Databricks LLM Chatbot with RAG and Vector Search Demo

Introduction I recently setup and have been playing around with the “Deploy LLM Chatbots with RAG and Databricks Vector Search” demo from Databricks. While not a complete step-by-step guide, this article offers insights into what to expect, the necessary steps, how to fix issues that may arise, and how to maximize your trial experience quickly. Getting access to Databricks You can get a free 2-week trial from Databricks. I used AWS, and if you want to follow along, you will need to do the same. Here are the main things to know for setting up the trial. ...

April 17, 2024 · 6 min · Ben Karciauskas