Computer use is an AI capability where an agent operates software the way a human would — by reading what is on the screen and controlling the mouse and keyboard — rather than by calling APIs. The model sees a screenshot, decides on a click or a keystroke, the action is executed, the screen updates, and the loop continues.
The technique was popularized in 2024-2025 and matured into a production-ready fallback by 2026. It is slower, more expensive, and less reliable than calling an API directly, so it is not the first choice. But for legacy systems with no API — older POS terminals, government portals, supplier extranets — computer use is the only way an AI agent can take an action at all.
A well-architected agent uses APIs by default and falls back to computer use only when no API exists, and only inside a sandboxed environment with explicit policy on what the agent is allowed to click.
How Nordix uses it
Nordix BIOS prefers API integrations and ships with native connectors for the systems most operators run. For the long tail of legacy software — old POS systems, country-specific tax portals, supplier ordering pages from 2009 — BIOS uses computer-use agents in a sandboxed environment, with hard scopes on which sites and actions are permitted. This is how BIOS keeps an 11-day deployment time even for operators with older stacks: we do not require an API rewrite first.