Use Mozilla Firefox Nightly on your Mac from ChatGPT or Claude

• MacPartly

  Through the app's window, with macOS accessibility: BCD reads what Mozilla Firefox Nightly 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

162.0a1,2026-11-11-09-11-17

Installs (last 365 days)

3,502 · #398 among Homebrew apps

Updates

Updates itself

Homepage

www.mozilla.org/firefox/channel/desktop/#nightly

Install

brew install --cask firefox@nightly

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

Can ChatGPT control Mozilla Firefox Nightly?
On a Mac with BCD, yes, through the app's window: ChatGPT can open Mozilla Firefox Nightly, 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 Mozilla Firefox Nightly 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.