Nano Agent serves as a Master Control Program (MCP) server designed to manage and orchestrate experimental, small-scale engineering agents. Its primary purpose is to facilitate the testing and comparison of agentic capabilities across various cloud-based and local Large Language Models (LLMs), evaluating them based on performance, speed, and cost. It moves beyond single prompt calls, focusing on how well agents can chain multiple tools to achieve real engineering results, providing crucial insights into the practical application and efficiency of different LLM providers and models.