Trope CUA

Trope CUA gives an AI agent background computer use on Windows and macOS: it can inspect and operate real desktop applications while avoiding accidental movement of the user's actual mouse cursor or changes to their active application, on operating systems and target apps that support a safe route. It exposes screenshots, accessibility trees, action receipts and trajectory recordings over MCP, a background daemon, or direct CLI calls, and can register itself with an MCP client such as Cursor through a generated configuration.

Every mutating action returns a receipt with three fields describing whether the action was background-safe, whether the cursor moved, and whether the foreground application changed, and an action is only safe to treat as background-safe when all three say so; unsafe routes and fallbacks are reported in the receipt rather than hidden, and known unsafe parent-session routes are refused outright instead of pretending to have succeeded. Capabilities include listing desktop windows, snapshotting a target window as pixels or an accessibility tree, background-safe clicking, typing, key presses, scrolling and value setting, a visual agent-cursor overlay that never moves the real hardware cursor, and trajectory recording and replay for debugging.

The Windows implementation is written at the repository root and the macOS implementation in Swift; it is MIT licensed.