The article mentions that their utility can be installed using this: bash <(curl -s https://raw.githubusercontent.com/pry0cc/axiom/master/intera...)

This is the Github page for the source code. https://github.com/pry0cc/axiom/blob/master/interact/axiom-c...

They also recommend only installing it in an "VPS environment"(Virtual Private Serer) because it overwrites your .bashrc or .zshrc files depending on your preferred Shell.