fantastical

Install command: 
brew install --cask fantastical

Name: Fantastical

Calendar software

https://flexibits.com/fantastical

Cask JSON API: /api/cask/fantastical.json

Cask code: fantastical.rb on GitHub

Current version: 4.1

Requirements: macOS >= 12

Analytics:

Installs (30 days)
fantastical 220
Installs (90 days)
fantastical 727
Installs (365 days)
fantastical 3,406