Plugin Development Help Needed: Kobo Markup Export

Hi,

I have developed a Python script to export Kobo markups to composite pngs. GitHub here: https://github.com/leldr/Kobo-Compos...rkup-Generator.

I am trying to make this tool more accessible via creating a Calibre plugin, but I'm not sure which plugin abstract class I need to extend from : https://manual.calibre-ebook.com/plu...erface-actions.

Any suggestions would be appreciated. Thank you in advance!