My aim is admittedly bit esoteric. I was trying to set up an endpoint that would allow me to load in new fics without further user interaction so that I can then hook it up to other sources as needed.
A recurring discussion in a small community of readers is 'do you remember a fic about X and Y?!', only to have some true fic addict immediately identify it based on the description. 'Oh, that is Blahblah from Blurb, here's the link!'... and then the link is to a dead fic. I am relatively capable at coding when it isn't around midnight, so I figured I'd just set up a discord bot where people could drop links to their most appreciated fics which would then get stored up just in case some fic would ever get wiped from oblivion.
(Obviously authors have every right to remove their fics, but I feel that if fans were to go out of their way to store such a fic in a communal library of sorts, preserving what is worth preserving is a valid enough aim.)
For now it seems I am stuck doing it all manually. I haven't been able to find any way to make Calibre just eat the custom metadata stored inside the .epub FFF generated so that it fills the custom columns with that data when I manually toss it into Calibre. This makes it all a few hurdles too many.
Still, FFF is a great plugin. I am just weird with what I am trying to achieve.