Computer Use
A Claude capability where the model controls a computer by viewing screenshots and issuing mouse and keyboard actions to operate software through its graphical interface.
Analogy
Like a remote worker who sees your screen and moves the mouse and types, rather than calling a clean API.
Why it matters
It lets you automate apps that have no API by having Claude drive the actual interface.
In practice
Claude opening a web app, filling a form, and clicking submit by interpreting on-screen screenshots.