GET /api/skin-api/skins/{user_id or nickname}
GET /api/skin-api/avatars/combo/{user_id or nickname}
GET /api/skin-api/avatars/face/{user_id or nickname}
POST /api/skins/update_skin
The POST route require 2 parameters : `{ "access_token" : "XXXX", "skin" : "IMAGE.PNG" }
The user, if connected, can update his skin if he navigates to /skin-api
With Azlink, in the config.yml, you can set the skinrestorer-integration to true to automatically apply player's skins
You can also use the plugin https://www.spigotmc.org/resources/kataskinapi.110210/ to automatically apply player's skins if you are not using Azlink.