Create monogame extended animation XML

I’m learning to use monogame.extended for do sprite animation. As I read from the document here, I need to create an XML file describing each of the “frames” of the animation:

The creation of this file can be tedious. I wonder if there are tools that would help creating such file? More specifically, figuring out the coordinates of each animation frame tile from the sprite sheet?

Have you tried using SpriteFactory?
I believe that is the old way for sprite animation.