Autenticate player endpoint

[finnbuilds]

Hi,

I'm building a simple playlist curation site and want to be able to start playback on the users' Spotify app via the website, just like the embeds work. But I want to do it with my design.

I've found the 'https://api.spotify.com/v1/me/player/play' endpoint (https://developer.spotify.com/documentation/web-api/reference/#/operations/start-a-users-playback). But I can't find any information on how to authorize my request without the user logging in, which isn't necessary in this case as I'm not using any user data.

Does anyone know where to find that information? Thanks!