Script Hook was never designed for cheating. It disables itself in online mode and lacks memory hacks like “no spread” or “speed hack.” However, its open architecture and source-available nature (unofficial reimplementations exist) have been forked into:

You can use script hooks to automate repetitive tasks in an application, such as data processing or report generation.

This piece dissects what Script Hook actually does, how it bypasses native protection, and why developers like Rockstar Games oscillate between tolerating and attacking it.