Spotify is changing how its APIs work in Developer Mode, its layer that lets developers test their third-party applications using the audio platform’s APIs. The changes include a mandatory premium account, fewer test users, and a limited number of API endpoints. The company debuted Developer Mode in 2021 to allow developers to test their applications with up to 25 users. Spotify is now limiting each app to only five users, and requires devs to have a Premium subscription. If developers need to