How much are you paying for the MBFC API? The page says it isn't free. I'll give you an API endpoint which will check sources against https://en.wikipedia.org/wiki/Wikipedia:Reliable_sources/Perennial_sources, if you pay me half of whatever you were paying MBFC previously. That list is quite a lot better than relying on MBFC.
I already scraped the list. It'll take around an hour for my script to finish going down the sources and assigning web sites to each one, but I can have a working API endpoint for you tomorrow morning. I can do the bot part also, if you prefer. That's probably easier than making a new endpoint and hooking it to a bot and debugging the connection and all.
Like I said, I think the idea that readers won't be able to determine that Breitbart is unreliable is missing a pretty big elephant in the misinformational room. If the issue that's causing you to keep MBFC is finding a better source that's programmatic, though, then solving that is almost trivially easy and at least seems like some kind of step forward.
Why is it admin level? Are there admins that tell you what you can and can't do with the politics community, in this case? Or does the politics moderation team have the ability to ditch the bot if they decide to?
This is such a strange situation. If you're stuck in that former position, though, it would make a lot of your responses in this comments section make a whole lot more sense.