Thread: Extending Listing Add-ons

Extending Listing Add-ons

By default I can find 2 addons in the Payment Settings/Listings, those are called 'feature on homepage' and 'feature on category'. I need another custom payment addon as well which I'd like to code myself. Is there an ADDON API which allows me to define another addon with the parameters that do already exist for the default addons ('id', 'name', 'price' & 'duration') ?
Or are there any premium addons around which can be purchased ? Probably somebody else already build what I am looking for.
Thanks!