Creating a Chrome extension for Webflow

#help

I'm a bit lost, I know it can be done because there is another extension that does it, but I can't quite understand what I should be looking at in order to replicate the operation.

Basically I would like to create a Chrome extension for webflow that allows the user to do 2 things with one click:
1- Generate elements automatically (for example create a series of

with certain characteristics)
2- Paste items from the clipboard.

Webflow doesn't have a Designer API, so I understand that all of this has to be done by interacting directly with their .JS, right?

Can someone point me in the right direction about what I should do research in order to find a way to do it.

I already opened the other extension that does it in VS Code to try to understand, but the code is all minified and you can't really understand much.

Thanks for any help!