Drive a real browser and Linux desktop in the cloud (computer use) — a full GUI with Chrome, a 60fps stream for visibility, and the Lux agent for automating clicks/typing/logins. Use for visual UI checks, logging into web apps, testing Electron apps, or any GUI task that can't be done over plain shell. Records demo videos automatically.
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Added September 7, 2026
ai-agentsgoshellbashtestingapi
Works with
cli
api
Security analysis
D42/100
criticalPipes output to a shell interpreter
mediumUses curl or wget to download content
criticalDownloads and executes remote scripts — classic supply chain attack
Installs into .claude/skills of the current project.
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---
name: computer-use-browser-desktop
description: Drive a real browser and Linux desktop in the cloud (computer use) — a full GUI with Chrome, a 60fps stream for visibility, and the Lux agent for automating clicks/typing/logins. Use for visual UI checks, logging into web apps, testing Electron apps, or any GUI task that can't be done over plain shell. Records demo videos automatically.
---
# Computer use: browser + desktop (Box)
Use this when a task needs a **real GUI**, not just a shell: logging into a web app, validating a rendered UI, controlling Chrome, testing an Electron app, or recording a demo. Box runs a full Linux desktop with Chrome; the **Lux** agent automates desktop/browser interactions and auto-records the session.
## Recipe
```bash
box_id="$(box new --json | jq -r 'select(.event == "ready") | .id')"
# Get a live desktop stream URL (60fps WebRTC, or VNC over HTTPS on bad networks)
box desktop "$box_id" --json
# Automate a GUI goal with Lux (records to /home/user/lux-demos/)
box ssh "$box_id" -- "lux start 'log in to example.com and screenshot the dashboard'"
box ssh "$box_id" -- "lux run --max-steps 30"
box ssh "$box_id" -- "lux status"
```
## Why Box
- **Real desktop + Chrome** — does GUI work headless setups can't.
- **Two stream modes** — 60fps WebRTC (Moonlight) for quality, VNC-over-HTTPS for reliability on restrictive networks.
- **Auto-recorded demos** — every Lux run produces a video artifact.
## Prereqs
`curl -fsSL https://box.ascii.dev/install | sh`, then `box login "$BOX_API_KEY" --json`.
## Limits
EU-only; 100 active VMs soft cap. For massive parallel headless browser fleets, dedicated browser providers (Browserbase) scale further; Box is best when you need a *full machine* behind the browser.
