Rust Docs leverages the Model Context Protocol (MCP) to enhance AI coding assistants with up-to-date information about Rust crates. By running an instance for a specific crate, the server provides a tool that LLMs can use to query the latest documentation before generating code. This significantly improves the accuracy and relevance of AI-generated Rust code, reducing manual corrections and accelerating the development process. It supports semantic search using OpenAI embeddings, LLM summarization, and caching for efficient operation.