Cua is an open-source computer-use infrastructure project for building agents that interact with desktop and mobile environments. It provides a unified sandbox API for Linux, macOS, Windows, Android, containers, and virtual machines, allowing agents to see screens, run commands, click, type, and perform other computer actions programmatically.

The project also includes Cua Drivers for background computer control, enabling agents to operate native applications without necessarily taking over the user's active cursor or focus. Its tooling is designed to work with agent clients and coding environments through CLI and MCP interfaces, while sandbox abstractions make the same automation code portable across different operating systems and runtimes.

Cua is intended for developers building computer-use agents, GUI automation, benchmarks, and isolated execution environments. By separating agent logic from the underlying machine implementation, it provides a common layer for testing and running agents against real operating systems locally or in cloud infrastructure.