Sama CLI is available for macOS, Windows, and Linux. It only needs to be installed once.
Download Sama CLI
Windows

Linux

Mac

If you want to review the list of Sama CLI installers, check the GitHub repository
Using macOS? Install the Sama CLI through Homebrew
Sama CLI is also available on macOS via Homebrew, and it's recommended to install this way to avoid permission issues with downloaded packages:
brew tap Samasource/formulas
brew install sama-cli
Note
You may need to preform
xcode-select --install
if you don't have xcode already installed.