Use Calendar 366 II on your Mac from ChatGPT or Claude
Menu bar calendar for events and reminders. With BCD, ChatGPT, Claude and other AI apps can open Calendar 366 II on your Mac, read its window and press buttons or type, from your phone or another computer.
Works on
- MacPartly
Through the app's window, with macOS accessibility: BCD reads what Calendar 366 II 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.
About Calendar 366 II
- Version
- 2.16.0
- Installs (last 365 days)
- 200 · #1,820 among Homebrew apps
- Updates
- Updates itself
- Homepage
- nspektor.com/calendar366/mac
- Install
brew install --cask calendar-366
Try asking
“Open Calendar 366 II and tell me what is on its screen”
“Install Calendar 366 II with Homebrew”
“Quit Calendar 366 II and update it to the latest version”
Questions
Can ChatGPT control Calendar 366 II?
On a Mac with BCD, yes, through the app's window: ChatGPT can open Calendar 366 II, 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 Calendar 366 II 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.