Rust is a server that implements the Model Context Protocol (MCP), acting as a bridge between large language models (LLMs) like GitHub Copilot and your local Rust development environment. By exposing local tools and project context to the LLM, it transforms your AI assistant into an active participant in your development workflow. This allows the LLM to perform actions on your behalf, such as compiling, testing, analyzing, managing dependencies, and formatting your Rust code, significantly enhancing productivity and ensuring adherence to best practices.