Fusion360 is a semantic modeling system that integrates large language models (LLMs) with the Fusion 360 API, enabling users to create and manipulate 3D models using natural language. It acts as a bridge, allowing LLMs to understand user intent and translate it into actionable commands for Fusion 360. This system facilitates a powerful workflow where LLMs communicate with an MCP server, which in turn interacts with a Fusion 360 plugin via an HTTP API, ultimately executing Python API calls within the design software. It's designed for real-time processing and easy installation, leveraging AI to streamline 3D design.