BCD

Mac apps › R

Use RunJS on your Mac from ChatGPT or Claude

JavaScript playground that auto-evaluates as code is typed. With BCD, ChatGPT, Claude and other AI apps can open RunJS on your Mac, read its window and press buttons or type, from your phone or another computer.

Works on

About RunJS

Version
4.1.0
Installs (last 365 days)
286 · #1,564 among Homebrew apps
Needs
macOS 12 or later
Updates
Updates itself
Homepage
runjs.app
Install
brew install --cask runjs

Try asking

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

Questions

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

Program data from Homebrew, updated 2026-11-11. Installs are Homebrew's installs on request over the last 365 days.