diff --git a/YandexMusic.API/Converters/IntToStringConverter.cs b/YandexMusic.API/Converters/IntToStringConverter.cs
index f8ec5fe..b1b0b8e 100644
--- a/YandexMusic.API/Converters/IntToStringConverter.cs
+++ b/YandexMusic.API/Converters/IntToStringConverter.cs
@@ -3,7 +3,7 @@ using System.Text.Json.Serialization;
 
 namespace YandexMusic.API.Converters;
 
-public class IntToStringConverter : JsonConverter<string>
+internal class IntToStringConverter : JsonConverter<string>
 {
     public override string Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {
diff --git a/YandexMusic.API/Converters/StringToIntConverter.cs b/YandexMusic.API/Converters/StringToIntConverter.cs
index d48a914..f79d315 100644
--- a/YandexMusic.API/Converters/StringToIntConverter.cs
+++ b/YandexMusic.API/Converters/StringToIntConverter.cs
@@ -3,7 +3,7 @@ using System.Text.Json.Serialization;
 
 namespace YandexMusic.API.Converters;
 
-public class StringToIntConverter : JsonConverter<int>
+internal class StringToIntConverter : JsonConverter<int>
 {
     public override int Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {
diff --git a/YandexMusic.API/Requests/Account/YGetAuthAppPasswordBuilder.cs b/YandexMusic.API/Requests/Account/YGetAuthAppPasswordBuilder.cs
index 5e86b57..f148f3f 100644
--- a/YandexMusic.API/Requests/Account/YGetAuthAppPasswordBuilder.cs
+++ b/YandexMusic.API/Requests/Account/YGetAuthAppPasswordBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthAppPasswordBuilder : YAuthRequestBuilder<YAuthBase?, string>
+internal class YGetAuthAppPasswordBuilder : YAuthRequestBuilder<YAuthBase?, string>
 {
     public YGetAuthAppPasswordBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Account/YGetAuthCaptchaBuilder.cs b/YandexMusic.API/Requests/Account/YGetAuthCaptchaBuilder.cs
index 393a2e5..069475d 100644
--- a/YandexMusic.API/Requests/Account/YGetAuthCaptchaBuilder.cs
+++ b/YandexMusic.API/Requests/Account/YGetAuthCaptchaBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthCaptchaBuilder : YAuthRequestBuilder<YAuthCaptcha?, object>
+internal class YGetAuthCaptchaBuilder : YAuthRequestBuilder<YAuthCaptcha?, object>
 {
     public YGetAuthCaptchaBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Account/YGetAuthCookiesBuilder.cs b/YandexMusic.API/Requests/Account/YGetAuthCookiesBuilder.cs
index 5c014d5..a405019 100644
--- a/YandexMusic.API/Requests/Account/YGetAuthCookiesBuilder.cs
+++ b/YandexMusic.API/Requests/Account/YGetAuthCookiesBuilder.cs
@@ -4,7 +4,7 @@ using YandexMusic.API.Requests.Common;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthCookiesBuilder : YAuthRequestBuilder<YAccessToken?, object>
+internal class YGetAuthCookiesBuilder : YAuthRequestBuilder<YAccessToken?, object>
 {
     public YGetAuthCookiesBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Account/YGetAuthInfoBuilder.cs b/YandexMusic.API/Requests/Account/YGetAuthInfoBuilder.cs
index 9aa2b01..97921c0 100644
--- a/YandexMusic.API/Requests/Account/YGetAuthInfoBuilder.cs
+++ b/YandexMusic.API/Requests/Account/YGetAuthInfoBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthInfoBuilder : YMusicRequestBuilder<YAccountResult?, object>
+internal class YGetAuthInfoBuilder : YMusicRequestBuilder<YAccountResult?, object>
 {
     public YGetAuthInfoBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Account/YGetAuthLetterBuilder.cs b/YandexMusic.API/Requests/Account/YGetAuthLetterBuilder.cs
index 88c9b1a..2ae9748 100644
--- a/YandexMusic.API/Requests/Account/YGetAuthLetterBuilder.cs
+++ b/YandexMusic.API/Requests/Account/YGetAuthLetterBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthLetterBuilder : YAuthRequestBuilder<YAuthLetter?, object>
+internal class YGetAuthLetterBuilder : YAuthRequestBuilder<YAuthLetter?, object>
 {
     public YGetAuthLetterBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Account/YGetAuthLoginCaptchaBuilder.cs b/YandexMusic.API/Requests/Account/YGetAuthLoginCaptchaBuilder.cs
index 00a5605..823c2f8 100644
--- a/YandexMusic.API/Requests/Account/YGetAuthLoginCaptchaBuilder.cs
+++ b/YandexMusic.API/Requests/Account/YGetAuthLoginCaptchaBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthLoginCaptchaBuilder : YAuthRequestBuilder<YAuthBase?, string>
+internal class YGetAuthLoginCaptchaBuilder : YAuthRequestBuilder<YAuthBase?, string>
 {
     public YGetAuthLoginCaptchaBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Account/YGetAuthLoginLetterBuilder.cs b/YandexMusic.API/Requests/Account/YGetAuthLoginLetterBuilder.cs
index 052d8a6..d40962e 100644
--- a/YandexMusic.API/Requests/Account/YGetAuthLoginLetterBuilder.cs
+++ b/YandexMusic.API/Requests/Account/YGetAuthLoginLetterBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthLoginLetterBuilder : YAuthRequestBuilder<YAuthLetterStatus?, object>
+internal class YGetAuthLoginLetterBuilder : YAuthRequestBuilder<YAuthLetterStatus?, object>
 {
     public YGetAuthLoginLetterBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Account/YGetAuthLoginUserBuilder.cs b/YandexMusic.API/Requests/Account/YGetAuthLoginUserBuilder.cs
index ec19b8f..86950f5 100644
--- a/YandexMusic.API/Requests/Account/YGetAuthLoginUserBuilder.cs
+++ b/YandexMusic.API/Requests/Account/YGetAuthLoginUserBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthLoginUserBuilder : YAuthRequestBuilder<YAuthTypes?, (string token, string login)>
+internal class YGetAuthLoginUserBuilder : YAuthRequestBuilder<YAuthTypes?, (string token, string login)>
 {
     public YGetAuthLoginUserBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Account/YGetAuthMethodsBuilder.cs b/YandexMusic.API/Requests/Account/YGetAuthMethodsBuilder.cs
index a4d83a1..63c2dde 100644
--- a/YandexMusic.API/Requests/Account/YGetAuthMethodsBuilder.cs
+++ b/YandexMusic.API/Requests/Account/YGetAuthMethodsBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Requests.Common;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthMethodsBuilder : YRequestBuilder<object>
+internal class YGetAuthMethodsBuilder : YRequestBuilder<object>
 {
     public YGetAuthMethodsBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Account/YGetAuthQRBuilder.cs b/YandexMusic.API/Requests/Account/YGetAuthQRBuilder.cs
index ab5fa65..18afa94 100644
--- a/YandexMusic.API/Requests/Account/YGetAuthQRBuilder.cs
+++ b/YandexMusic.API/Requests/Account/YGetAuthQRBuilder.cs
@@ -4,7 +4,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthQRBuilder : YAuthRequestBuilder<YAuthQR?, object>
+internal class YGetAuthQRBuilder : YAuthRequestBuilder<YAuthQR?, object>
 {
     public YGetAuthQRBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Account/YGetLoginInfoBuilder.cs b/YandexMusic.API/Requests/Account/YGetLoginInfoBuilder.cs
index a71cc28..a68966a 100644
--- a/YandexMusic.API/Requests/Account/YGetLoginInfoBuilder.cs
+++ b/YandexMusic.API/Requests/Account/YGetLoginInfoBuilder.cs
@@ -1,10 +1,9 @@
 using System.Net;
 using YandexMusic.API.Models.Account;
-using YandexMusic.API.Requests.Common;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetLoginInfoBuilder : YAuthRequestBuilder<YLoginInfo?, object>
+internal class YGetLoginInfoBuilder : YAuthRequestBuilder<YLoginInfo?, object>
 {
     public YGetLoginInfoBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Account/YGetMusicTokenBuilder.cs b/YandexMusic.API/Requests/Account/YGetMusicTokenBuilder.cs
index 50c61e5..0d9d986 100644
--- a/YandexMusic.API/Requests/Account/YGetMusicTokenBuilder.cs
+++ b/YandexMusic.API/Requests/Account/YGetMusicTokenBuilder.cs
@@ -5,7 +5,7 @@ using YandexMusic.API.Requests.Common;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetMusicTokenBuilder : YAuthRequestBuilder<YAccessToken?, object>
+internal class YGetMusicTokenBuilder : YAuthRequestBuilder<YAccessToken?, object>
 {
     public YGetMusicTokenBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Account/YGetShortAccountInifoBuilder.cs b/YandexMusic.API/Requests/Account/YGetShortAccountInifoBuilder.cs
index 95956ed..0fd8b58 100644
--- a/YandexMusic.API/Requests/Account/YGetShortAccountInifoBuilder.cs
+++ b/YandexMusic.API/Requests/Account/YGetShortAccountInifoBuilder.cs
@@ -5,7 +5,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetShortAccountInfoBuilder : YAuthRequestBuilder<YShortAccountInfo?, object>
+internal class YGetShortAccountInfoBuilder : YAuthRequestBuilder<YShortAccountInfo?, object>
 {
     public YGetShortAccountInfoBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Account/YPostAuthStats.cs b/YandexMusic.API/Requests/Account/YPostAuthStats.cs
index e2cf8de..d2efe3e 100644
--- a/YandexMusic.API/Requests/Account/YPostAuthStats.cs
+++ b/YandexMusic.API/Requests/Account/YPostAuthStats.cs
@@ -4,7 +4,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YPostAuthStats : YAuthRequestBuilder<YAuthEmpty?, object>
+internal class YPostAuthStats : YAuthRequestBuilder<YAuthEmpty?, object>
 {
     public YPostAuthStats(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Album/YGetAlbumBuilder.cs b/YandexMusic.API/Requests/Album/YGetAlbumBuilder.cs
index 37c7def..ed9eb06 100644
--- a/YandexMusic.API/Requests/Album/YGetAlbumBuilder.cs
+++ b/YandexMusic.API/Requests/Album/YGetAlbumBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Album;
 
 namespace YandexMusic.API.Requests.Album;
 
-public class YGetAlbumBuilder : YMusicRequestBuilder<YAlbum?, string>
+internal class YGetAlbumBuilder : YMusicRequestBuilder<YAlbum?, string>
 {
     public YGetAlbumBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Album/YGetAlbumsBuilder.cs b/YandexMusic.API/Requests/Album/YGetAlbumsBuilder.cs
index df67dd9..75f82c8 100644
--- a/YandexMusic.API/Requests/Album/YGetAlbumsBuilder.cs
+++ b/YandexMusic.API/Requests/Album/YGetAlbumsBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Album;
 
 namespace YandexMusic.API.Requests.Album;
 
-public class YGetAlbumsBuilder : YMusicRequestBuilder<List<YAlbum>?, IEnumerable<string>>
+internal class YGetAlbumsBuilder : YMusicRequestBuilder<List<YAlbum>?, IEnumerable<string>>
 {
     public YGetAlbumsBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Artist/YGetArtistBuilder.cs b/YandexMusic.API/Requests/Artist/YGetArtistBuilder.cs
index 76bf032..8a4bdd6 100644
--- a/YandexMusic.API/Requests/Artist/YGetArtistBuilder.cs
+++ b/YandexMusic.API/Requests/Artist/YGetArtistBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Artist;
 
 namespace YandexMusic.API.Requests.Artist;
 
-public class YGetArtistBuilder : YMusicRequestBuilder<YArtistBriefInfo?, string>
+internal class YGetArtistBuilder : YMusicRequestBuilder<YArtistBriefInfo?, string>
 {
     public YGetArtistBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Artist/YGetArtistTrackBuilder.cs b/YandexMusic.API/Requests/Artist/YGetArtistTrackBuilder.cs
index c2d8ade..c8a0d73 100644
--- a/YandexMusic.API/Requests/Artist/YGetArtistTrackBuilder.cs
+++ b/YandexMusic.API/Requests/Artist/YGetArtistTrackBuilder.cs
@@ -4,7 +4,7 @@ using YandexMusic.API.Models.Artist;
 
 namespace YandexMusic.API.Requests.Artist;
 
-public class YGetArtistTrackBuilder : YMusicRequestBuilder<YTracksPage?, (string id, int page, int pageSize)>
+internal class YGetArtistTrackBuilder : YMusicRequestBuilder<YTracksPage?, (string id, int page, int pageSize)>
 {
     public YGetArtistTrackBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Artist/YGetArtistsBuilder.cs b/YandexMusic.API/Requests/Artist/YGetArtistsBuilder.cs
index aca9b31..1d59297 100644
--- a/YandexMusic.API/Requests/Artist/YGetArtistsBuilder.cs
+++ b/YandexMusic.API/Requests/Artist/YGetArtistsBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Artist;
 
 namespace YandexMusic.API.Requests.Artist;
 
-public class YGetArtistsBuilder : YMusicRequestBuilder<List<YArtist>?, IEnumerable<string>>
+internal class YGetArtistsBuilder : YMusicRequestBuilder<List<YArtist>?, IEnumerable<string>>
 {
     public YGetArtistsBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Common/YAuthRequestBuilder.cs b/YandexMusic.API/Requests/Common/YAuthRequestBuilder.cs
index 734fd3e..ee606b4 100644
--- a/YandexMusic.API/Requests/Common/YAuthRequestBuilder.cs
+++ b/YandexMusic.API/Requests/Common/YAuthRequestBuilder.cs
@@ -4,7 +4,7 @@ using YandexMusic.API.Requests.Common;
 namespace YandexMusic.API.Requests;
 
 /// <summary>Базовый класс для запросов к Passport (passport.yandex.ru).</summary>
-public abstract class YAuthRequestBuilder<TResponse, TParams> : YJsonRequestBuilder<TResponse, TParams>
+internal abstract class YAuthRequestBuilder<TResponse, TParams> : YJsonRequestBuilder<TResponse, TParams>
 {
     protected override string BaseUrl => YConstants.Endpoints.PassportUrl;
 
diff --git a/YandexMusic.API/Requests/Common/YJsonRequestBuilder.cs b/YandexMusic.API/Requests/Common/YJsonRequestBuilder.cs
index 4ff6f28..f8db7e0 100644
--- a/YandexMusic.API/Requests/Common/YJsonRequestBuilder.cs
+++ b/YandexMusic.API/Requests/Common/YJsonRequestBuilder.cs
@@ -8,7 +8,7 @@ namespace YandexMusic.API.Requests.Common;
 /// <summary>
 /// Строитель запросов с десериализацией JSON-ответа в TResponse.
 /// </summary>
-public abstract class YJsonRequestBuilder<TResponse, TParams> : YRequestBuilder<TParams>
+internal abstract class YJsonRequestBuilder<TResponse, TParams> : YRequestBuilder<TParams>
 {
     protected YJsonRequestBuilder(YandexMusicApi api) : base(api) { }
 
diff --git a/YandexMusic.API/Requests/Common/YMusicRequestBuilder.cs b/YandexMusic.API/Requests/Common/YMusicRequestBuilder.cs
index a4c7783..8f425c0 100644
--- a/YandexMusic.API/Requests/Common/YMusicRequestBuilder.cs
+++ b/YandexMusic.API/Requests/Common/YMusicRequestBuilder.cs
@@ -8,7 +8,7 @@ using YandexMusic.API.Requests.Common;
 namespace YandexMusic.API.Requests;
 
 /// <summary>Базовый класс для запросов к API Яндекс Музыки (api.music.yandex.net).</summary>
-public abstract class YMusicRequestBuilder<TResponse, TParams> : YJsonRequestBuilder<TResponse, TParams>
+internal abstract class YMusicRequestBuilder<TResponse, TParams> : YJsonRequestBuilder<TResponse, TParams>
 {
     protected override string BaseUrl => YConstants.Endpoints.MusicUrl;
 
diff --git a/YandexMusic.API/Requests/Common/YRequestBuilder.cs b/YandexMusic.API/Requests/Common/YRequestBuilder.cs
index b6bed61..701019f 100644
--- a/YandexMusic.API/Requests/Common/YRequestBuilder.cs
+++ b/YandexMusic.API/Requests/Common/YRequestBuilder.cs
@@ -12,7 +12,7 @@ namespace YandexMusic.API.Requests.Common;
 
 /// <summary>Базовый строитель HTTP-запросов.</summary>
 /// <typeparam name="TParams">Тип параметров запроса.</typeparam>
-public abstract class YRequestBuilder<TParams>
+internal abstract class YRequestBuilder<TParams>
 {
     /// <summary>HTTP-метод (GET, POST и т.д.).</summary>
     protected abstract string Method { get; }
diff --git a/YandexMusic.API/Requests/Feed/YGetFeedBuilder.cs b/YandexMusic.API/Requests/Feed/YGetFeedBuilder.cs
index 9021d91..bf4d883 100644
--- a/YandexMusic.API/Requests/Feed/YGetFeedBuilder.cs
+++ b/YandexMusic.API/Requests/Feed/YGetFeedBuilder.cs
@@ -1,10 +1,9 @@
 using System.Net;
 using YandexMusic.API.Models.Feed;
-using YandexMusic.API.Requests.Common;
 
 namespace YandexMusic.API.Requests.Feed;
 
-public class YGetFeedBuilder : YMusicRequestBuilder<YFeed?, object>
+internal class YGetFeedBuilder : YMusicRequestBuilder<YFeed?, object>
 {
     public YGetFeedBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Label/YGetLabelAlbumsBuilder.cs b/YandexMusic.API/Requests/Label/YGetLabelAlbumsBuilder.cs
index 7742887..5722124 100644
--- a/YandexMusic.API/Requests/Label/YGetLabelAlbumsBuilder.cs
+++ b/YandexMusic.API/Requests/Label/YGetLabelAlbumsBuilder.cs
@@ -5,7 +5,7 @@ using YandexMusic.API.Models.Label;
 
 namespace YandexMusic.API.Requests.Label;
 
-public class YGetLabelAlbumsBuilder : YMusicRequestBuilder<YLabelAlbums?, (YLabel label, int pageNumber)>
+internal class YGetLabelAlbumsBuilder : YMusicRequestBuilder<YLabelAlbums?, (YLabel label, int pageNumber)>
 {
     public YGetLabelAlbumsBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Label/YGetLabelArtistsBuilder.cs b/YandexMusic.API/Requests/Label/YGetLabelArtistsBuilder.cs
index 5a6ed12..934276c 100644
--- a/YandexMusic.API/Requests/Label/YGetLabelArtistsBuilder.cs
+++ b/YandexMusic.API/Requests/Label/YGetLabelArtistsBuilder.cs
@@ -5,7 +5,7 @@ using YandexMusic.API.Models.Label;
 
 namespace YandexMusic.API.Requests.Label;
 
-public class YGetLabelArtistsBuilder : YMusicRequestBuilder<YLabelArtists?, (YLabel label, int pageNumber)>
+internal class YGetLabelArtistsBuilder : YMusicRequestBuilder<YLabelArtists?, (YLabel label, int pageNumber)>
 {
     public YGetLabelArtistsBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Landing/YGetChildrenLandingBuilder.cs b/YandexMusic.API/Requests/Landing/YGetChildrenLandingBuilder.cs
index fe05313..4c76574 100644
--- a/YandexMusic.API/Requests/Landing/YGetChildrenLandingBuilder.cs
+++ b/YandexMusic.API/Requests/Landing/YGetChildrenLandingBuilder.cs
@@ -1,10 +1,9 @@
 using System.Net;
 using YandexMusic.API.Models.Landing;
-using YandexMusic.API.Requests.Common;
 
 namespace YandexMusic.API.Requests.Landing;
 
-public class YGetChildrenLandingBuilder : YMusicRequestBuilder<YChildrenLanding?, object>
+internal class YGetChildrenLandingBuilder : YMusicRequestBuilder<YChildrenLanding?, object>
 {
     public YGetChildrenLandingBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Landing/YGetLandingBuilder.cs b/YandexMusic.API/Requests/Landing/YGetLandingBuilder.cs
index b428222..1158293 100644
--- a/YandexMusic.API/Requests/Landing/YGetLandingBuilder.cs
+++ b/YandexMusic.API/Requests/Landing/YGetLandingBuilder.cs
@@ -4,7 +4,7 @@ using YandexMusic.API.Models.Landing;
 
 namespace YandexMusic.API.Requests.Landing;
 
-public class YGetLandingBuilder : YMusicRequestBuilder<YLanding?, YLandingBlockType[]>
+internal class YGetLandingBuilder : YMusicRequestBuilder<YLanding?, YLandingBlockType[]>
 {
     public YGetLandingBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Library/YGetLibraryRecentlyListenedBuilder.cs b/YandexMusic.API/Requests/Library/YGetLibraryRecentlyListenedBuilder.cs
index 2b6b9aa..e129c28 100644
--- a/YandexMusic.API/Requests/Library/YGetLibraryRecentlyListenedBuilder.cs
+++ b/YandexMusic.API/Requests/Library/YGetLibraryRecentlyListenedBuilder.cs
@@ -5,7 +5,7 @@ using YandexMusic.API.Models.Library;
 
 namespace YandexMusic.API.Requests.Library;
 
-public class YGetLibraryRecentlyListenedBuilder : YMusicRequestBuilder<YRecentlyListenedContext?, (IEnumerable<YPlayContextType> contextTypes, int trackCount, int contextCount)>
+internal class YGetLibraryRecentlyListenedBuilder : YMusicRequestBuilder<YRecentlyListenedContext?, (IEnumerable<YPlayContextType> contextTypes, int trackCount, int contextCount)>
 {
     public YGetLibraryRecentlyListenedBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Library/YGetLibrarySectionBuilder.cs b/YandexMusic.API/Requests/Library/YGetLibrarySectionBuilder.cs
index b2feedd..444ff23 100644
--- a/YandexMusic.API/Requests/Library/YGetLibrarySectionBuilder.cs
+++ b/YandexMusic.API/Requests/Library/YGetLibrarySectionBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Library;
 
 namespace YandexMusic.API.Requests.Library;
 
-public class YGetLibrarySectionBuilder<T> : YMusicRequestBuilder<T?, (YLibrarySection section, YLibrarySectionType type)>
+internal class YGetLibrarySectionBuilder<T> : YMusicRequestBuilder<T?, (YLibrarySection section, YLibrarySectionType type)>
 {
     public YGetLibrarySectionBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Library/YLibraryAddBuilder.cs b/YandexMusic.API/Requests/Library/YLibraryAddBuilder.cs
index 7671cdf..8f1660b 100644
--- a/YandexMusic.API/Requests/Library/YLibraryAddBuilder.cs
+++ b/YandexMusic.API/Requests/Library/YLibraryAddBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Library;
 
 namespace YandexMusic.API.Requests.Library;
 
-public class YLibraryAddBuilder<T> : YMusicRequestBuilder<T?, (string id, YLibrarySection section, YLibrarySectionType type)>
+internal class YLibraryAddBuilder<T> : YMusicRequestBuilder<T?, (string id, YLibrarySection section, YLibrarySectionType type)>
 {
     public YLibraryAddBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Library/YLibraryRemoveBuilder.cs b/YandexMusic.API/Requests/Library/YLibraryRemoveBuilder.cs
index d400b75..1f6d455 100644
--- a/YandexMusic.API/Requests/Library/YLibraryRemoveBuilder.cs
+++ b/YandexMusic.API/Requests/Library/YLibraryRemoveBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Library;
 
 namespace YandexMusic.API.Requests.Library;
 
-public class YLibraryRemoveBuilder<T> : YMusicRequestBuilder<T?, (string id, YLibrarySection section, YLibrarySectionType type)>
+internal class YLibraryRemoveBuilder<T> : YMusicRequestBuilder<T?, (string id, YLibrarySection section, YLibrarySectionType type)>
 {
     public YLibraryRemoveBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Pins/YGetPinsBuilder.cs b/YandexMusic.API/Requests/Pins/YGetPinsBuilder.cs
index 5a7f81e..c90a067 100644
--- a/YandexMusic.API/Requests/Pins/YGetPinsBuilder.cs
+++ b/YandexMusic.API/Requests/Pins/YGetPinsBuilder.cs
@@ -1,10 +1,9 @@
 using System.Net;
 using YandexMusic.API.Models.Pins;
-using YandexMusic.API.Requests.Common;
 
 namespace YandexMusic.API.Requests.Pins;
 
-public class YGetPinsBuilder : YMusicRequestBuilder<YPins?, object>
+internal class YGetPinsBuilder : YMusicRequestBuilder<YPins?, object>
 {
     public YGetPinsBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Playlist/YGetPlaylistBuilder.cs b/YandexMusic.API/Requests/Playlist/YGetPlaylistBuilder.cs
index d070478..b647912 100644
--- a/YandexMusic.API/Requests/Playlist/YGetPlaylistBuilder.cs
+++ b/YandexMusic.API/Requests/Playlist/YGetPlaylistBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Playlist;
 
 namespace YandexMusic.API.Requests.Playlist;
 
-public class YGetPlaylistBuilder : YMusicRequestBuilder<YPlaylist?, (string user, string kind)>
+internal class YGetPlaylistBuilder : YMusicRequestBuilder<YPlaylist?, (string user, string kind)>
 {
     public YGetPlaylistBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Playlist/YGetPlaylistByUuidBuilder.cs b/YandexMusic.API/Requests/Playlist/YGetPlaylistByUuidBuilder.cs
index 5e6c075..39e6e03 100644
--- a/YandexMusic.API/Requests/Playlist/YGetPlaylistByUuidBuilder.cs
+++ b/YandexMusic.API/Requests/Playlist/YGetPlaylistByUuidBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Playlist;
 
 namespace YandexMusic.API.Requests.Playlist;
 
-public class YGetPlaylistByUuidBuilder : YMusicRequestBuilder<YPlaylist?, string>
+internal class YGetPlaylistByUuidBuilder : YMusicRequestBuilder<YPlaylist?, string>
 {
     public YGetPlaylistByUuidBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Playlist/YGetPlaylistFavoritesBuilder.cs b/YandexMusic.API/Requests/Playlist/YGetPlaylistFavoritesBuilder.cs
index 82626bc..f69dae1 100644
--- a/YandexMusic.API/Requests/Playlist/YGetPlaylistFavoritesBuilder.cs
+++ b/YandexMusic.API/Requests/Playlist/YGetPlaylistFavoritesBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Playlist;
 
 namespace YandexMusic.API.Requests.Playlist;
 
-public class YGetPlaylistFavoritesBuilder : YMusicRequestBuilder<List<YPlaylist>?, object>
+internal class YGetPlaylistFavoritesBuilder : YMusicRequestBuilder<List<YPlaylist>?, object>
 {
     public YGetPlaylistFavoritesBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Playlist/YGetPlaylistsBuilder.cs b/YandexMusic.API/Requests/Playlist/YGetPlaylistsBuilder.cs
index cb71199..cf4c082 100644
--- a/YandexMusic.API/Requests/Playlist/YGetPlaylistsBuilder.cs
+++ b/YandexMusic.API/Requests/Playlist/YGetPlaylistsBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Playlist;
 
 namespace YandexMusic.API.Requests.Playlist;
 
-public class YGetPlaylistsBuilder : YMusicRequestBuilder<List<YPlaylist>?, IEnumerable<(string User, string Kind)>>
+internal class YGetPlaylistsBuilder : YMusicRequestBuilder<List<YPlaylist>?, IEnumerable<(string User, string Kind)>>
 {
     public YGetPlaylistsBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Playlist/YPlaylistChangeBuilder.cs b/YandexMusic.API/Requests/Playlist/YPlaylistChangeBuilder.cs
index 2938919..185ff27 100644
--- a/YandexMusic.API/Requests/Playlist/YPlaylistChangeBuilder.cs
+++ b/YandexMusic.API/Requests/Playlist/YPlaylistChangeBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Playlist;
 
 namespace YandexMusic.API.Requests.Playlist;
 
-public class YPlaylistChangeBuilder : YMusicRequestBuilder<YPlaylist?, (YPlaylist playlist, IEnumerable<YPlaylistChange> changes)>
+internal class YPlaylistChangeBuilder : YMusicRequestBuilder<YPlaylist?, (YPlaylist playlist, IEnumerable<YPlaylistChange> changes)>
 {
     public YPlaylistChangeBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Playlist/YPlaylistCreateBuilder.cs b/YandexMusic.API/Requests/Playlist/YPlaylistCreateBuilder.cs
index ae6b065..017627d 100644
--- a/YandexMusic.API/Requests/Playlist/YPlaylistCreateBuilder.cs
+++ b/YandexMusic.API/Requests/Playlist/YPlaylistCreateBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Playlist;
 
 namespace YandexMusic.API.Requests.Playlist;
 
-public class YPlaylistCreateBuilder : YMusicRequestBuilder<YPlaylist?, string>
+internal class YPlaylistCreateBuilder : YMusicRequestBuilder<YPlaylist?, string>
 {
     public YPlaylistCreateBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Playlist/YPlaylistRemoveBuilder.cs b/YandexMusic.API/Requests/Playlist/YPlaylistRemoveBuilder.cs
index 0194cb0..e466ee8 100644
--- a/YandexMusic.API/Requests/Playlist/YPlaylistRemoveBuilder.cs
+++ b/YandexMusic.API/Requests/Playlist/YPlaylistRemoveBuilder.cs
@@ -2,7 +2,7 @@
 
 namespace YandexMusic.API.Requests.Playlist;
 
-public class YPlaylistRemoveBuilder : YMusicRequestBuilder<HttpResponseMessage, string>
+internal class YPlaylistRemoveBuilder : YMusicRequestBuilder<HttpResponseMessage, string>
 {
     public YPlaylistRemoveBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Playlist/YPlaylistRenameBuilder.cs b/YandexMusic.API/Requests/Playlist/YPlaylistRenameBuilder.cs
index 3b90522..712a243 100644
--- a/YandexMusic.API/Requests/Playlist/YPlaylistRenameBuilder.cs
+++ b/YandexMusic.API/Requests/Playlist/YPlaylistRenameBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Playlist;
 
 namespace YandexMusic.API.Requests.Playlist;
 
-public class YPlaylistRenameBuilder : YMusicRequestBuilder<YPlaylist?, (string kind, string name)>
+internal class YPlaylistRenameBuilder : YMusicRequestBuilder<YPlaylist?, (string kind, string name)>
 {
     public YPlaylistRenameBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Queue/YGetQueueBuilder.cs b/YandexMusic.API/Requests/Queue/YGetQueueBuilder.cs
index 2c4df49..72cae23 100644
--- a/YandexMusic.API/Requests/Queue/YGetQueueBuilder.cs
+++ b/YandexMusic.API/Requests/Queue/YGetQueueBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Queue;
 
 namespace YandexMusic.API.Requests.Queue;
 
-public class YGetQueueBuilder : YMusicRequestBuilder<YQueue?, string>
+internal class YGetQueueBuilder : YMusicRequestBuilder<YQueue?, string>
 {
     public YGetQueueBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Queue/YQueueCreateBuilder.cs b/YandexMusic.API/Requests/Queue/YQueueCreateBuilder.cs
index 8c75597..866148f 100644
--- a/YandexMusic.API/Requests/Queue/YQueueCreateBuilder.cs
+++ b/YandexMusic.API/Requests/Queue/YQueueCreateBuilder.cs
@@ -8,7 +8,7 @@ using YandexMusic.API.Models.Queue;
 
 namespace YandexMusic.API.Requests.Queue;
 
-public class YQueueCreateBuilder : YMusicRequestBuilder<YNewQueue?, YQueue>
+internal class YQueueCreateBuilder : YMusicRequestBuilder<YNewQueue?, YQueue>
 {
     private string? _device;
     public YQueueCreateBuilder(YandexMusicApi api, string? device = null) : base(api) => _device = device;
diff --git a/YandexMusic.API/Requests/Queue/YQueueUpdatePositionBuilder.cs b/YandexMusic.API/Requests/Queue/YQueueUpdatePositionBuilder.cs
index b02eddc..60c1a0d 100644
--- a/YandexMusic.API/Requests/Queue/YQueueUpdatePositionBuilder.cs
+++ b/YandexMusic.API/Requests/Queue/YQueueUpdatePositionBuilder.cs
@@ -5,7 +5,7 @@ using YandexMusic.API.Models.Queue;
 
 namespace YandexMusic.API.Requests.Queue;
 
-public class YQueueUpdatePositionBuilder : YMusicRequestBuilder<YUpdatedQueue?, (string queueId, int currentIndex, bool isInteractive)>
+internal class YQueueUpdatePositionBuilder : YMusicRequestBuilder<YUpdatedQueue?, (string queueId, int currentIndex, bool isInteractive)>
 {
     private string? _device;
     public YQueueUpdatePositionBuilder(YandexMusicApi api, string? device = null) : base(api) => _device = device;
diff --git a/YandexMusic.API/Requests/Queue/YQueuesListBuilder.cs b/YandexMusic.API/Requests/Queue/YQueuesListBuilder.cs
index 7d45888..2888fd3 100644
--- a/YandexMusic.API/Requests/Queue/YQueuesListBuilder.cs
+++ b/YandexMusic.API/Requests/Queue/YQueuesListBuilder.cs
@@ -4,7 +4,7 @@ using YandexMusic.API.Models.Queue;
 
 namespace YandexMusic.API.Requests.Queue;
 
-public class YQueuesListBuilder : YMusicRequestBuilder<YQueueItemsContainer?, string?>
+internal class YQueuesListBuilder : YMusicRequestBuilder<YQueueItemsContainer?, string?>
 {
     private string? _device;
     public YQueuesListBuilder(YandexMusicApi api, string? device = null) : base(api) => _device = device;
diff --git a/YandexMusic.API/Requests/Radio/YGetStationBuilder.cs b/YandexMusic.API/Requests/Radio/YGetStationBuilder.cs
index 7d4970f..edf3744 100644
--- a/YandexMusic.API/Requests/Radio/YGetStationBuilder.cs
+++ b/YandexMusic.API/Requests/Radio/YGetStationBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Radio;
 
 namespace YandexMusic.API.Requests.Radio;
 
-public class YGetStationBuilder : YMusicRequestBuilder<List<YStation>?, (string type, string tag)>
+internal class YGetStationBuilder : YMusicRequestBuilder<List<YStation>?, (string type, string tag)>
 {
     public YGetStationBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Radio/YGetStationTracksBuilder.cs b/YandexMusic.API/Requests/Radio/YGetStationTracksBuilder.cs
index dfbdbe3..4f330a7 100644
--- a/YandexMusic.API/Requests/Radio/YGetStationTracksBuilder.cs
+++ b/YandexMusic.API/Requests/Radio/YGetStationTracksBuilder.cs
@@ -4,7 +4,7 @@ using YandexMusic.API.Models.Radio;
 
 namespace YandexMusic.API.Requests.Radio;
 
-public class YGetStationTracksBuilder : YMusicRequestBuilder<YStationSequence?, (YStationDescription station, string prevTrackId)>
+internal class YGetStationTracksBuilder : YMusicRequestBuilder<YStationSequence?, (YStationDescription station, string prevTrackId)>
 {
     public YGetStationTracksBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Radio/YGetStationsBuilder.cs b/YandexMusic.API/Requests/Radio/YGetStationsBuilder.cs
index 8a76ac0..0040aec 100644
--- a/YandexMusic.API/Requests/Radio/YGetStationsBuilder.cs
+++ b/YandexMusic.API/Requests/Radio/YGetStationsBuilder.cs
@@ -1,10 +1,9 @@
 using System.Net;
 using YandexMusic.API.Models.Radio;
-using YandexMusic.API.Requests.Common;
 
 namespace YandexMusic.API.Requests.Radio;
 
-public class YGetStationsBuilder : YMusicRequestBuilder<List<YStation>?, object>
+internal class YGetStationsBuilder : YMusicRequestBuilder<List<YStation>?, object>
 {
     public YGetStationsBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Radio/YGetStationsDashboardBuilder.cs b/YandexMusic.API/Requests/Radio/YGetStationsDashboardBuilder.cs
index 23cba2e..fe7d8f2 100644
--- a/YandexMusic.API/Requests/Radio/YGetStationsDashboardBuilder.cs
+++ b/YandexMusic.API/Requests/Radio/YGetStationsDashboardBuilder.cs
@@ -1,10 +1,9 @@
 using System.Net;
 using YandexMusic.API.Models.Radio;
-using YandexMusic.API.Requests.Common;
 
 namespace YandexMusic.API.Requests.Radio;
 
-public class YGetStationsDashboardBuilder : YMusicRequestBuilder<YStationsDashboard?, object>
+internal class YGetStationsDashboardBuilder : YMusicRequestBuilder<YStationsDashboard?, object>
 {
     public YGetStationsDashboardBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Radio/YSetSettings2Builder.cs b/YandexMusic.API/Requests/Radio/YSetSettings2Builder.cs
index d0619b4..53352f4 100644
--- a/YandexMusic.API/Requests/Radio/YSetSettings2Builder.cs
+++ b/YandexMusic.API/Requests/Radio/YSetSettings2Builder.cs
@@ -8,7 +8,7 @@ using YandexMusic.API.Models.Radio;
 
 namespace YandexMusic.API.Requests.Radio;
 
-public class YSetSettings2Builder : YMusicRequestBuilder<string?, (YStationDescription station, YStationSettings2 settings2)>
+internal class YSetSettings2Builder : YMusicRequestBuilder<string?, (YStationDescription station, YStationSettings2 settings2)>
 {
     public YSetSettings2Builder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Radio/YSetStationFeedbackBuilder.cs b/YandexMusic.API/Requests/Radio/YSetStationFeedbackBuilder.cs
index 602e68d..e1f8d98 100644
--- a/YandexMusic.API/Requests/Radio/YSetStationFeedbackBuilder.cs
+++ b/YandexMusic.API/Requests/Radio/YSetStationFeedbackBuilder.cs
@@ -10,7 +10,7 @@ using YandexMusic.API.Models.Track;
 
 namespace YandexMusic.API.Requests.Radio;
 
-public class YSetStationFeedbackBuilder : YMusicRequestBuilder<string?, (YStationFeedbackType type, YStation station, YTrack? track, string batchId, double totalPlayedSeconds)>
+internal class YSetStationFeedbackBuilder : YMusicRequestBuilder<string?, (YStationFeedbackType type, YStation station, YTrack? track, string batchId, double totalPlayedSeconds)>
 {
     public YSetStationFeedbackBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Search/YSearchBuilder.cs b/YandexMusic.API/Requests/Search/YSearchBuilder.cs
index 0d11b30..8beb890 100644
--- a/YandexMusic.API/Requests/Search/YSearchBuilder.cs
+++ b/YandexMusic.API/Requests/Search/YSearchBuilder.cs
@@ -5,7 +5,7 @@ using YandexMusic.API.Models.Search;
 
 namespace YandexMusic.API.Requests.Search;
 
-public class YSearchBuilder : YMusicRequestBuilder<YSearch?, (string searchText, YSearchType searchType, int page, int pageSize)>
+internal class YSearchBuilder : YMusicRequestBuilder<YSearch?, (string searchText, YSearchType searchType, int page, int pageSize)>
 {
     public YSearchBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Search/YSearchSuggestBuilder.cs b/YandexMusic.API/Requests/Search/YSearchSuggestBuilder.cs
index 7364ea5..4b0535e 100644
--- a/YandexMusic.API/Requests/Search/YSearchSuggestBuilder.cs
+++ b/YandexMusic.API/Requests/Search/YSearchSuggestBuilder.cs
@@ -4,7 +4,7 @@ using YandexMusic.API.Models.Search;
 
 namespace YandexMusic.API.Requests.Search;
 
-public class YSearchSuggestBuilder : YMusicRequestBuilder<YSearchSuggest?, string>
+internal class YSearchSuggestBuilder : YMusicRequestBuilder<YSearchSuggest?, string>
 {
     public YSearchSuggestBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Track/YGetTrackSimilarBuilder.cs b/YandexMusic.API/Requests/Track/YGetTrackSimilarBuilder.cs
index a41c84c..4e68ffa 100644
--- a/YandexMusic.API/Requests/Track/YGetTrackSimilarBuilder.cs
+++ b/YandexMusic.API/Requests/Track/YGetTrackSimilarBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Track;
 
 namespace YandexMusic.API.Requests.Track;
 
-public class YGetTrackSimilarBuilder : YMusicRequestBuilder<YTrackSimilar?, string>
+internal class YGetTrackSimilarBuilder : YMusicRequestBuilder<YTrackSimilar?, string>
 {
     public YGetTrackSimilarBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Track/YGetTrackSupplementBuilder.cs b/YandexMusic.API/Requests/Track/YGetTrackSupplementBuilder.cs
index 8d70694..f667009 100644
--- a/YandexMusic.API/Requests/Track/YGetTrackSupplementBuilder.cs
+++ b/YandexMusic.API/Requests/Track/YGetTrackSupplementBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Track;
 
 namespace YandexMusic.API.Requests.Track;
 
-public class YGetTrackSupplementBuilder : YMusicRequestBuilder<YTrackSupplement?, string>
+internal class YGetTrackSupplementBuilder : YMusicRequestBuilder<YTrackSupplement?, string>
 {
     public YGetTrackSupplementBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Track/YGetTracksBuilder.cs b/YandexMusic.API/Requests/Track/YGetTracksBuilder.cs
index c5f8cca..5599e5d 100644
--- a/YandexMusic.API/Requests/Track/YGetTracksBuilder.cs
+++ b/YandexMusic.API/Requests/Track/YGetTracksBuilder.cs
@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Track;
 
 namespace YandexMusic.API.Requests.Track;
 
-public class YGetTracksBuilder : YMusicRequestBuilder<List<YTrack>?, IEnumerable<string>>
+internal class YGetTracksBuilder : YMusicRequestBuilder<List<YTrack>?, IEnumerable<string>>
 {
     public YGetTracksBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Track/YSendTrackInfoBuilder.cs b/YandexMusic.API/Requests/Track/YSendTrackInfoBuilder.cs
index 50a9f8e..6d840d3 100644
--- a/YandexMusic.API/Requests/Track/YSendTrackInfoBuilder.cs
+++ b/YandexMusic.API/Requests/Track/YSendTrackInfoBuilder.cs
@@ -4,7 +4,7 @@ using YandexMusic.API.Models.Track;
 
 namespace YandexMusic.API.Requests.Track;
 
-public class YSendTrackInfoBuilder : YMusicRequestBuilder<string?, (YTrack track, string from, bool fromCache, string playId, string playlistId, double totalPlayedSeconds, double endPositionSeconds)>
+internal class YSendTrackInfoBuilder : YMusicRequestBuilder<string?, (YTrack track, string from, bool fromCache, string playId, string playlistId, double totalPlayedSeconds, double endPositionSeconds)>
 {
     public YSendTrackInfoBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
diff --git a/YandexMusic.API/Requests/Track/YStorageDownloadFileBuilder.cs b/YandexMusic.API/Requests/Track/YStorageDownloadFileBuilder.cs
index f36fc08..cc31cdd 100644
--- a/YandexMusic.API/Requests/Track/YStorageDownloadFileBuilder.cs
+++ b/YandexMusic.API/Requests/Track/YStorageDownloadFileBuilder.cs
@@ -6,7 +6,7 @@ using YandexMusic.API.Requests.Common;
 namespace YandexMusic.API.Requests.Track;
 
 /// <summary>Особый запрос – не к api.music.yandex.net, а к произвольному URL.</summary>
-public class YStorageDownloadFileBuilder : YJsonRequestBuilder<YStorageDownloadFile?, string>
+internal class YStorageDownloadFileBuilder : YJsonRequestBuilder<YStorageDownloadFile?, string>
 {
     public YStorageDownloadFileBuilder(YandexMusicApi api) : base(api) { }
     protected override string BaseUrl => ""; // не используется, т.к. URL берётся из параметра
diff --git a/YandexMusic.API/Requests/Track/YTrackDownloadInfoBuilder.cs b/YandexMusic.API/Requests/Track/YTrackDownloadInfoBuilder.cs
index 07e9850..6eb37a7 100644
--- a/YandexMusic.API/Requests/Track/YTrackDownloadInfoBuilder.cs
+++ b/YandexMusic.API/Requests/Track/YTrackDownloadInfoBuilder.cs
@@ -4,7 +4,7 @@ using YandexMusic.API.Models.Common;
 
 namespace YandexMusic.API.Requests.Track;
 
-public class YTrackDownloadInfoBuilder : YMusicRequestBuilder<List<YTrackDownloadInfo>?, (string trackKey, bool direct)>
+internal class YTrackDownloadInfoBuilder : YMusicRequestBuilder<List<YTrackDownloadInfo>?, (string trackKey, bool direct)>
 {
     public YTrackDownloadInfoBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;
diff --git a/YandexMusic.API/Requests/Ugc/YUgcGetUploadLinkBuilder.cs b/YandexMusic.API/Requests/Ugc/YUgcGetUploadLinkBuilder.cs
index 30bfdae..3e947a4 100644
--- a/YandexMusic.API/Requests/Ugc/YUgcGetUploadLinkBuilder.cs
+++ b/YandexMusic.API/Requests/Ugc/YUgcGetUploadLinkBuilder.cs
@@ -6,7 +6,7 @@ using YandexMusic.API.Models.Ugc;
 
 namespace YandexMusic.API.Requests.Ugc;
 
-public class YUgcGetUploadLinkBuilder : YMusicRequestBuilder<YUgcUpload?, (YPlaylist playlist, string fileName)>
+internal class YUgcGetUploadLinkBuilder : YMusicRequestBuilder<YUgcUpload?, (YPlaylist playlist, string fileName)>
 {
     private static readonly Random _random = new();
     public YUgcGetUploadLinkBuilder(YandexMusicApi api) : base(api) { }
diff --git a/YandexMusic.API/Requests/Ugc/YUgcUploadBuilder.cs b/YandexMusic.API/Requests/Ugc/YUgcUploadBuilder.cs
index eb05a58..6fd7c91 100644
--- a/YandexMusic.API/Requests/Ugc/YUgcUploadBuilder.cs
+++ b/YandexMusic.API/Requests/Ugc/YUgcUploadBuilder.cs
@@ -5,7 +5,7 @@ using YandexMusic.API.Requests.Common;
 namespace YandexMusic.API.Requests.Ugc;
 
 /// <summary>Загрузка трека – специальный запрос на произвольный URL.</summary>
-public class YUgcUploadBuilder : YJsonRequestBuilder<YResponse<string>?, (string postTargetLink, byte[] fileBytes)>
+internal class YUgcUploadBuilder : YJsonRequestBuilder<YResponse<string>?, (string postTargetLink, byte[] fileBytes)>
 {
     public YUgcUploadBuilder(YandexMusicApi api) : base(api) { }
     protected override string BaseUrl => "";
diff --git a/YandexMusic/YandexMusicClient.cs b/YandexMusic/YandexMusicClient.cs
index 8c175d3..6da909a 100644
--- a/YandexMusic/YandexMusicClient.cs
+++ b/YandexMusic/YandexMusicClient.cs
@@ -26,6 +26,9 @@ public class YandexMusicClient : IDisposable
     private readonly bool _ownsHttpClient;
     private YnisonPlayer? _player;
 
+    /// <summary>Хранилище авторизации.</summary>
+    public AuthStorage AuthStorage => _storage;
+
     /// <summary>Информация об аккаунте (после авторизации).</summary>
     public YAccount Account => _storage.User;