You need to set the following environment variables before running the server:
-`SPOTIPY_CLIENT_ID`
-`SPOTIPY_CLIENT_SECRET`
-`SPOTIPY_REDIRECT_URI`
-`SECRET_KEY`
### Why aren't you hosting a version?
The short answer is: Spotify.
In order to allow uninvited users to use the app, I would have to submit a quota extension request, which requires a bunch of information filling out and can take up to six weeks to process, and is really too much for a simple project I threw together in an evening.
I don't really understand why this process is needed, other than to scare off people from building stuff with their API. Most other services I've worked with (eg. GitHub, Discord) allow anyone to register OAuth apps that can be used by anyone with no restrictions (other than if you were breaking their TOS or something), so this really just feels like Spotify just don't want individuals to build cool things with their platform :/