At the time I still used discord, I once wrote this incomplete (but cool looking) Discord Bot Client. You can log in with a bot token and send msgs etc. But it has no live reload, so you need to reload to see new messages (so its kinda trash xD)
If I were to still use discord I would maybe complete it someday, but as it stands this project will never be completed. I wouldn’t recommend anyone to use discord, as their privacy is a nightmare ;P