nostr:npub1nd86x5za0ascfmvmsxqyrzk4xc7l48h6gfmlcf5d3e9munenydys4g2zkd
Most AP servers support the Mastodon C2S API for connecting the web app to the back-end. Some also starting to support the C2S part of the AP spec. Some add bespoke extensions for app-specific features, which needed to eventually have FEPs.
So app devs need to know which C2S dialects a back-end speaks, and make sure their app supports one of those.
nostr:npub1f9fd738mny4rh95466l75u3raq4t65hcg2zm0qdcc0qgqn7g20lqn0dgxv