Viper X is a simple Roblox executor that can run on even lower-end systems. As of now, it does not have its own API and utilizes other APIs, such as KRNL and Oxygen U, for the execution.

Disclaimer: Roblox scripts can get you banned in the game and also on the platform. So please use them at your own risk. Also, it is best to use scripts on new account than your regular ones.