Codex computer use

cua_repl is the MCP server inside the ChatGPT Mac app's Computer Use plugin. Claude Code, Cursor, and agy call it under the name codex-cu. Clicks go into the target app. They do not move the user's pointer, but the computer surface brings the target window to the front, so the user sees it take the screen.

The long write-up is the Claude artifact codex-cu 接線手冊. Open it in a browser when this file does not answer a case.