Full desktop computer use for headless Linux servers. Xvfb + XFCE virtual desktop with xdotool automation. 17 actions (click, type, scroll, screenshot, drag, etc). Unlike OpenClaw's browser tool, operates at the X11 level so websites cannot detect automation. Includes VNC for live viewing.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Computer Use Skill
Full desktop GUI control for headless Linux servers. Creates a virtual display (Xvfb + XFCE) so you can run and control desktop applications on VPS/cloud instances without a physical monitor.
## Environment
- **Display**: `:99`
- **Resolution**: 1024x768 (XGA, Anthropic recommended)
- **Desktop**: XFCE4 (minimal — xfwm4 + panel only)
## Quick Setup
Run the setup script to install everything (systemd services, flicker-free VNC):
```bash
./scripts/setup-vnc.sh
```
This installs:
- Xvfb virtual display on `:99`
- Minimal XFCE desktop (xfwm4 + panel, no xfdesktop)
- x11vnc with stability flags
- noVNC for browser access
All services auto-start on boot and auto-restart on crash.
## Actions Reference
| Action | Script | Arguments | Description |
|--------|--------|-----------|-------------|
| screenshot | `screenshot.sh` | — | Capture screen → base64 PNG |
| cursor_position | `cursor_position.sh` | — | Get current mouse X,Y |
| mouse_move | `mouse_move.sh` | x y | Move mouse to coordinates |
| left_click | `click.sh` | x y left | Left click at coordinates |
| right_click | `click.sh` | x y right | Right click |
…
The line at the top of this page pins the label v1.2.1, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
GET https://markdownregistry.com/api/v1/artifacts/art_tntan56dns7zdpt6
GET https://markdownregistry.com/api/v1/resolve?ref=pr-e/openclaw-master-skills/computer-use
GET https://markdownregistry.com/api/v1/blob/6c5447dacdfa36a87ceed5734e75268dce6dd81046c0d14fa7150fc5506bc7d2
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