Roblox Studio MCP Server is a reference implementation of the Model Context Protocol (MCP) that enables communication between Roblox Studio via a plugin and external AI tools such as Claude Desktop or Cursor. It consists of two Rust-based components that communicate through internal shared objects: a web server built on axum that the Studio plugin long-polls, and an rmcp server that talks to Claude via stdio transport. The MCP server coordinates requests when an LLM wishes to run a tool: the Studio plugin retrieves requests through long polling and posts a response, which is delivered back to Claude. The setup includes automatic installation for Claude Desktop and Cursor when detected, and a manual configuration path with an MCP client config snippet. Build-from-source uses cargo run to build the server, configure Claude to communicate with it, and install the Studio plugin. Verification steps guide users to ensure the plugin appears in Roblox Studio, that the MCP communication can be toggled, and that Claude Desktop shows available tools (insert_model, run_code). A privacy note warns that third-party tools may access and modify your place, with terms depending on those tools’ policies.