Meanwhile in the parallel universe, in Russia, VKontakte provides full API access to anyone who clicks the button to create an API app. You only need manual review if you want access to messaging from user tokens, and that's a relatively recent change. Somehow, this hasn't turned into a privacy nightmare in more than 10 years the API was available.

I'm not defending VK — it does some increasingly user-hostile stuff too after having been acquired by Mail.Ru Group — but you can still integrate it into whatever the hell you want with ease.