Carpet Extra is an extension adding extra features to Fabric Carpet, like countless new dispenser behaviours, new ways to get resources in a renewable way and many others!
For its enabled dispenser behaviours it also adds a new Scarpet event that triggers when those happen, allowing you to further customize them.
If you're looking for Carpet autocrafting table, it has been moved to a standalone extension you can find on its repository on Github.
There are also lots of other carpet extensions out there, adding countless new rules and functionality! You can find a list of them in the Carpet wiki.