DeezerAPISwift is an unofficial wrapper for the Deezer API, written in Swift. Reverse engineered based on the Deezer Web Player, the library currently supports many useful endpoints like fetching information for albums, artists, playlists, and users, searching, and grabbing users' favorited tracks, albums, artists, and playlists. The library also has initial support for streaming tracks from Deezer, given an authenticated account and valid decryption token. The project uses the Swift Testing framework and has dedicated unit tests for every endpoint. The goal of this library is to enable the development of a macOS-native client for Deezer in the future.