diff --git a/YandexMusic.API/Common/Providers/MockRequestProvider.cs b/YandexMusic.API/Common/Providers/MockRequestProvider.cs
deleted file mode 100644
index dcd6476..0000000
--- a/YandexMusic.API/Common/Providers/MockRequestProvider.cs
+++ /dev/null
@@ -1,26 +0,0 @@
-namespace YandexMusic.API.Common.Providers
-{
-    /// <summary>
-    /// Провайдер запросов данными из файла
-    /// </summary>
-    public class MockRequestProvider : CommonRequestProvider
-    {
-
-
-        public MockRequestProvider(AuthStorage authStorage) : base(authStorage)
-        {
-        }
-
-
-
-        #region IRequestProvider
-
-        public override Task<HttpResponseMessage> GetWebResponseAsync(HttpRequestMessage message,
-            HttpCompletionOption completionOption = HttpCompletionOption.ResponseContentRead)
-        {
-            throw new NotImplementedException();
-        }
-
-        #endregion IRequestProvider
-    }
-}
\ No newline at end of file
diff --git a/YandexMusic.API/Extensions/API/YPlaylistExtensionsAsync.cs b/YandexMusic.API/Extensions/API/YPlaylistExtensionsAsync.cs
index bcfaf5b..c42566b 100644
--- a/YandexMusic.API/Extensions/API/YPlaylistExtensionsAsync.cs
+++ b/YandexMusic.API/Extensions/API/YPlaylistExtensionsAsync.cs
@@ -8,6 +8,11 @@ namespace YandexMusic.API.Extensions.API;
 /// </summary>
 public static partial class YPlaylistExtensions
 {
+    private static bool CheckUser(YPlaylist playlist)
+    {
+        return playlist.Owner.Uid == playlist.Context.Storage.User.Uid;
+    }
+
     public static async Task<YPlaylist> WithTracksAsync(this YPlaylist playlist)
     {
         return playlist.Tracks != null
diff --git a/YandexMusic.API/Requests/Common/YRequest.cs b/YandexMusic.API/Requests/Common/YRequest.cs
index 61d741b..6f79a8e 100644
--- a/YandexMusic.API/Requests/Common/YRequest.cs
+++ b/YandexMusic.API/Requests/Common/YRequest.cs
@@ -5,15 +5,11 @@ namespace YandexMusic.API.Requests.Common;
 
 internal class YRequest<T>
 {
-    #region Поля
-
     private HttpRequestMessage msg;
     private IRequestProvider provider;
 
     protected YandexMusicApi api;
 
-    #endregion Поля
-
     public YRequest(HttpRequestMessage message, YandexMusicApi yandex, AuthStorage auth)
     {
         msg = message;
diff --git a/YandexMusic.API/YandexMusicApi.cs b/YandexMusic.API/YandexMusicApi.cs
index 2428767..43eda6f 100644
--- a/YandexMusic.API/YandexMusicApi.cs
+++ b/YandexMusic.API/YandexMusicApi.cs
@@ -35,7 +35,19 @@ public class YandexMusicApi
     /// <summary>Создаёт экземпляр API с инициализацией всех подсистем.</summary>
     public YandexMusicApi()
     {
-        foreach (var property in GetType().GetProperties())
-            property.SetValue(this, Activator.CreateInstance(property.PropertyType, this));
+        Album = new YAlbumAPI(this);
+        Artist = new YArtistAPI(this);
+        Label = new YLabelAPI(this);
+        Landing = new YLandingAPI(this);
+        Library = new YLibraryAPI(this);
+        Playlist = new YPlaylistAPI(this);
+        Pins = new YPinsAPI(this);
+        Radio = new YRadioAPI(this);
+        Search = new YSearchAPI(this);
+        Track = new YTrackAPI(this);
+        Queue = new YQueueAPI(this);
+        User = new YUserAPI(this);
+        UserGeneratedContent = new YUgcAPI(this);
+        Ynison = new YYnisonAPI(this);
     }
 }
\ No newline at end of file