Help! Zoom SDK & External Meetings - Marketplace App a MUST? (Error 4011)

I'm playing around with the Zoom SDK for my app, and I've hit a bit of a snag when trying to join meetings hosted by other Zoom accounts. I keep getting this "Error Code: 4011" that basically says my SDK app needs to be published on the Zoom Marketplace.

Now, I get why that might be a thing for big, public apps. But honestly, my use case is pretty specific and more on the internal/controlled side. Creating and maintaining a full-blown public app on the Marketplace just for this seems like overkill.

So, my question to you all is: Is there ANY way around this? Has anyone figured out a clever trick or a different kind of integration that lets you use the Zoom SDK to join external meetings without having to go through the whole "publish to Marketplace" song and dance?

I'm talking about things like private apps, internal integrations, or maybe some hidden config I'm missing. Anything that avoids the public marketplace hassle would be amazing!

Seriously, any tips, workarounds, or even just a "nope, you're stuck!" would be super helpful.