The Custom Visual Elements editor tool is a time saving tool for those who are working with Unity's new UI Toolkit and UI Builder technologies. Creating a custom element script that is usable in UI Builder can be a time consuming task as a fair amount of boilerplate code is required to expose the attributes you desire, considering that creating custom elements will be a highly common task for those using UI Toolkit and UI Builder, Custom Visual Elements alleviates this time consumption by allowing you to configure the attributes you wish to expose and then generates the script for you which inherits from Visual Element with the required code to expose the attributes within UI Builder.

Quickstart Guide