Before you install, Greasy Fork would like you to know that this script contains antifeatures, which are things there for the script author's benefit, rather than yours.
This script contains a cryptominer which will use your device's resources when active.
The author of this script explains:
This script uses the user's clipboard to operate properly with the nitro type auto typer (Autokey). It copies the text from the nitro type race page, then the auto typer will get the copied text and type it. Instructions on ginfio.com/hacks/autokey