Since boost isn’t open source, the dev would have to allow you to configure the API endpoint (so the app would connect to the proxy instead of reddit.com), or someone would have to hack the app, which would probably be somewhat difficult.
An API proxy to allow 3rd party reddit clients to browse Lemmy with only minimal code changes. I’ve got it showing comments now :) Source isn’t uploaded yet, but it will be soon.
The reason I want to build this kind of proxy is that any app would be able to use it with minimal changes (configurable API server). For proprietary apps, you’re still at the mercy of the devs, but their work is greatly simplified. For open source apps such as e.g. RedReader, Infinity, anyone could make those changes. Another thing that it might be useful for is bots and the like. If I manage to implement support for posting, those could work on Lemmy as well. I personally would like to see the return of kg2bee.