Use Free Ruler on your Mac from ChatGPT or Claude

• MacPartly

  Through the app's window, with macOS accessibility: BCD reads what Free Ruler shows and presses buttons, types and picks menus. How far it goes depends on the app. macOS asks once to allow it.

• WindowsNo

  BCD controls app windows only on a Mac.

• LinuxNo

  BCD controls app windows only on a Mac.

Version

2.0.19

Installs (last 365 days)

493 · #1,212 among Homebrew apps

Needs

macOS 14 or later

Homepage

www.pascal.com/freeruler

Install

brew install --cask free-ruler

“Open Free Ruler and tell me what is on its screen”
“Install Free Ruler with Homebrew”
“Quit Free Ruler and update it to the latest version”

Can ChatGPT control Free Ruler?
On a Mac with BCD, yes, through the app's window: ChatGPT can open Free Ruler, read the buttons and text it shows, press buttons, type and pick menu items. How far that goes depends on how much of its window Free Ruler exposes to macOS accessibility.

Does this work on Windows?
No. BCD controls app windows only on a Mac. On Windows and Linux it works with files and commands.

Is it safe?
A new computer starts read-only. Controlling the screen and apps is turned on per computer, and macOS asks once before BCD may control apps.

Try it on your computer

BCD connects ChatGPT, Claude and other AI apps to your own Mac, Windows or Linux computer. One computer is free, with 20,000 tool calls a month and no card.