Make your AI agent fast at using a Mac. Ask it to open an app, click through it, type, read the screen or send a screenshot, and it is done in about 25 seconds instead of 50 to 100.

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• 2–4× faster GUI tasks, measured. Same agent, same Mac: System Settings → About went from 108.6 s to 27.8 s, Calculator with a screenshot from 52 s to 25.1 s. Every measurement →
• One command per task, not one agent turn per click. About 90% of a step-by-step run is the agent thinking between clicks. cu.py opens the app, clicks buttons by their visible text, types, picks menus, fills fields, waits, reads the screen and saves a screenshot in a single call, so those turns disappear.
• Runs in the background. It acts through macOS accessibility, not the mouse: clicking, typing, filling fields, reading and even opening apps and pages left the app you were using in front and the pointer where it was, sampled every 50 ms by a tool independent of the driver. Dragging, and menu commands that open a new window, are the exceptions. The driver runs natively on your Mac, not in a container or VM. Measured →
• Works on most apps. 58 of the 74 apps tested on one Mac, including Safari, Chrome, Discord, VS Code, Word, Excel, Keynote, Mail, Notes, Finder and System Settings. Apps with nothing to drive get a clear reason.
• Tested with three agents. Claude Code, Hermes and Grok CLI each did System Settings, Calculator and a Safari task three times: 27 of 27 correct, Claude Code fastest at 14–29 s. Results →
• Any system language, no API key. Localized app and button names work (計算機, 一般). It all runs on your Mac.
• For Hermes, Claude Code, or any agent that reads SKILL.md. One command installs it, and one updates it.

# 1. The driver that does the clicking, and its two macOS permissions
/bin/bash -c "$(curl -fsSL https://cua.ai/driver/install.sh)"
cua-driver permissions grant

# 2. The skill: Hermes
hermes skills install Nanako0129/computer-use-fast/skills/computer-use-fast
#    or Claude Code
npx skills add Nanako0129/computer-use-fast -g -a claude-code --skill computer-use-fast -y

Other agents, Chrome and Electron apps, checking that it works, updating: docs/setup.md

Ask your agent as you normally would:

Open System Settings and tell me which chip this Mac has. Open Calculator, work out 56 × 123 and send me a screenshot. In Safari, search Wikipedia for "hieroglyphs" and tell me what it says.

Behind the scenes the agent runs one line, for example:

cu.py --app "System Settings" --open --click General --click About --read Chip

MIT