I just found this cool utility a couple days ago and have found that it’s a great solution to sandboxed versions of Discord being unable to provide rich presence. It’s a Python script that queries the Steam web API to get info to forward to Discord’s API. The “installer” sets up a systemd service that will auto-run the script for you.
It requires you to get your own Steam API key which was a trivial, though slightly buggy, process for me. You can optionally use your own Discord app ID, or just use the one owned by the guy that created this script.
Strongly recommend it. It even automatically fetches icons for the games via SteamGridDB (Even if they could totally just fetch it from Steam). Ain’t really a fix for games using Proton, however, or making sandboxed Discord versions to get those local RPC implementation, just an alternative and more efficient way to show what you play on Steam.
Wdym? It works fine for Proton games as well.