diff --git a/app/Http/Requests/API/AddSongsToPlaylistRequest.php b/app/Http/Requests/API/AddSongsToPlaylistRequest.php
index 26167a7d..37a185e7 100644
--- a/app/Http/Requests/API/AddSongsToPlaylistRequest.php
+++ b/app/Http/Requests/API/AddSongsToPlaylistRequest.php
@@ -14,8 +14,7 @@ class AddSongsToPlaylistRequest extends Request
     public function rules(): array
     {
         return [
-            'songs' => 'required|array',
-            'songs.*' => [Rule::exists(Song::class, 'id')],
+            'songs' => ['required', 'array', Rule::exists(Song::class, 'id')],
         ];
     }
 }
diff --git a/app/Http/Requests/API/BatchInteractionRequest.php b/app/Http/Requests/API/BatchInteractionRequest.php
index 029e0d8a..452c05bc 100644
--- a/app/Http/Requests/API/BatchInteractionRequest.php
+++ b/app/Http/Requests/API/BatchInteractionRequest.php
@@ -2,6 +2,9 @@
 
 namespace App\Http\Requests\API;
 
+use App\Models\Song;
+use Illuminate\Validation\Rule;
+
 /**
  * @property array<string> $songs
  */
@@ -11,7 +14,7 @@ class BatchInteractionRequest extends Request
     public function rules(): array
     {
         return [
-            'songs' => 'required|array|exists:songs,id',
+            'songs' => ['required', 'array', Rule::exists(Song::class, 'id')],
         ];
     }
 }
diff --git a/app/Http/Requests/API/ChangeSongsVisibilityRequest.php b/app/Http/Requests/API/ChangeSongsVisibilityRequest.php
index dfc67e07..a786a5c1 100644
--- a/app/Http/Requests/API/ChangeSongsVisibilityRequest.php
+++ b/app/Http/Requests/API/ChangeSongsVisibilityRequest.php
@@ -3,6 +3,8 @@
 namespace App\Http\Requests\API;
 
 use App\Facades\License;
+use App\Models\Song;
+use Illuminate\Validation\Rule;
 
 /**
  * @property-read array<string> $songs
@@ -13,7 +15,7 @@ class ChangeSongsVisibilityRequest extends Request
     public function rules(): array
     {
         return [
-            'songs' => 'required|exists:songs,id',
+            'songs' => ['required', 'array', Rule::exists(Song::class, 'id')],
         ];
     }
 
diff --git a/app/Http/Requests/API/DeleteSongsRequest.php b/app/Http/Requests/API/DeleteSongsRequest.php
index 46ff7e34..5f9b0c0c 100644
--- a/app/Http/Requests/API/DeleteSongsRequest.php
+++ b/app/Http/Requests/API/DeleteSongsRequest.php
@@ -2,6 +2,9 @@
 
 namespace App\Http\Requests\API;
 
+use App\Models\Song;
+use Illuminate\Validation\Rule;
+
 /** @property-read array<string> $songs */
 class DeleteSongsRequest extends Request
 {
@@ -9,7 +12,7 @@ class DeleteSongsRequest extends Request
     public function rules(): array
     {
         return [
-            'songs' => 'required|array|exists:songs,id',
+            'songs' => ['required', 'array', Rule::exists(Song::class, 'id')],
         ];
     }
 }
diff --git a/app/Http/Requests/API/PlaylistFolderPlaylistDestroyRequest.php b/app/Http/Requests/API/PlaylistFolderPlaylistDestroyRequest.php
index ccf583cd..f2a6934c 100644
--- a/app/Http/Requests/API/PlaylistFolderPlaylistDestroyRequest.php
+++ b/app/Http/Requests/API/PlaylistFolderPlaylistDestroyRequest.php
@@ -3,7 +3,7 @@
 namespace App\Http\Requests\API;
 
 use App\Models\Playlist;
-use App\Rules\AllPlaylistsBelongToUser;
+use App\Rules\AllPlaylistsBelongTo;
 use Illuminate\Validation\Rule;
 
 /**
@@ -15,8 +15,12 @@ class PlaylistFolderPlaylistDestroyRequest extends Request
     public function rules(): array
     {
         return [
-            'playlists' => ['required', 'array', new AllPlaylistsBelongToUser($this->user())],
-            'playlists.*' => [Rule::exists(Playlist::class, 'id')],
+            'playlists' => [
+                'required',
+                'array',
+                new AllPlaylistsBelongTo($this->user()),
+                Rule::exists(Playlist::class, 'id'),
+            ],
         ];
     }
 }
diff --git a/app/Http/Requests/API/PlaylistFolderPlaylistStoreRequest.php b/app/Http/Requests/API/PlaylistFolderPlaylistStoreRequest.php
index d11da0f2..6d7257db 100644
--- a/app/Http/Requests/API/PlaylistFolderPlaylistStoreRequest.php
+++ b/app/Http/Requests/API/PlaylistFolderPlaylistStoreRequest.php
@@ -3,7 +3,7 @@
 namespace App\Http\Requests\API;
 
 use App\Models\Playlist;
-use App\Rules\AllPlaylistsBelongToUser;
+use App\Rules\AllPlaylistsBelongTo;
 use Illuminate\Validation\Rule;
 
 /**
@@ -15,8 +15,12 @@ class PlaylistFolderPlaylistStoreRequest extends Request
     public function rules(): array
     {
         return [
-            'playlists' => ['required', 'array', new AllPlaylistsBelongToUser($this->user())],
-            'playlists.*' => [Rule::exists(Playlist::class, 'id')],
+            'playlists' => [
+                'required',
+                'array',
+                new AllPlaylistsBelongTo($this->user()),
+                Rule::exists(Playlist::class, 'id'),
+            ],
         ];
     }
 }
diff --git a/app/Http/Requests/API/RemoveSongsFromPlaylistRequest.php b/app/Http/Requests/API/RemoveSongsFromPlaylistRequest.php
index b1f522cc..edf8772e 100644
--- a/app/Http/Requests/API/RemoveSongsFromPlaylistRequest.php
+++ b/app/Http/Requests/API/RemoveSongsFromPlaylistRequest.php
@@ -2,6 +2,9 @@
 
 namespace App\Http\Requests\API;
 
+use App\Models\Song;
+use Illuminate\Validation\Rule;
+
 /**
  * @property-read array<string> $songs
  */
@@ -11,7 +14,7 @@ class RemoveSongsFromPlaylistRequest extends Request
     public function rules(): array
     {
         return [
-            'songs' => 'required|array|exists:songs,id',
+            'songs' => ['required', 'array', Rule::exists(Song::class, 'id')],
         ];
     }
 }
diff --git a/app/Http/Requests/API/SongUpdateRequest.php b/app/Http/Requests/API/SongUpdateRequest.php
index 25c5172f..60cfa3ef 100644
--- a/app/Http/Requests/API/SongUpdateRequest.php
+++ b/app/Http/Requests/API/SongUpdateRequest.php
@@ -2,9 +2,12 @@
 
 namespace App\Http\Requests\API;
 
+use App\Models\Song;
+use Illuminate\Validation\Rule;
+
 /**
- * @property array<string> $songs
- * @property array<mixed> $data
+ * @property-read array<string> $songs
+ * @property-read array<mixed> $data
  */
 class SongUpdateRequest extends Request
 {
@@ -13,7 +16,7 @@ class SongUpdateRequest extends Request
     {
         return [
             'data' => 'required|array',
-            'songs' => 'required|array|exists:songs,id',
+            'songs' => ['required', 'array', Rule::exists(Song::class, 'id')],
         ];
     }
 }
diff --git a/app/Http/Requests/API/UpdateQueueStateRequest.php b/app/Http/Requests/API/UpdateQueueStateRequest.php
index fe26f5ce..9f04901c 100644
--- a/app/Http/Requests/API/UpdateQueueStateRequest.php
+++ b/app/Http/Requests/API/UpdateQueueStateRequest.php
@@ -14,8 +14,7 @@ class UpdateQueueStateRequest extends Request
     public function rules(): array
     {
         return [
-            'songs' => 'array',
-            'songs.*' => [Rule::exists(Song::class, 'id')],
+            'songs' => ['array', Rule::exists(Song::class, 'id')],
         ];
     }
 }
diff --git a/app/Rules/AllPlaylistsBelongToUser.php b/app/Rules/AllPlaylistsBelongTo.php
similarity index 91%
rename from app/Rules/AllPlaylistsBelongToUser.php
rename to app/Rules/AllPlaylistsBelongTo.php
index 717c1dab..bf242408 100644
--- a/app/Rules/AllPlaylistsBelongToUser.php
+++ b/app/Rules/AllPlaylistsBelongTo.php
@@ -6,7 +6,7 @@ use App\Models\User;
 use Illuminate\Contracts\Validation\Rule;
 use Illuminate\Support\Arr;
 
-class AllPlaylistsBelongToUser implements Rule
+final class AllPlaylistsBelongTo implements Rule
 {
     public function __construct(private User $user)
     {
diff --git a/tests/Feature/InteractionTest.php b/tests/Feature/InteractionTest.php
index 24b78531..4c7353f2 100644
--- a/tests/Feature/InteractionTest.php
+++ b/tests/Feature/InteractionTest.php
@@ -45,7 +45,7 @@ class InteractionTest extends TestCase
         ]);
     }
 
-    public function testToggle(): void
+    public function testToggleLike(): void
     {
         $this->expectsEvents(SongLikeToggled::class);
 
@@ -72,7 +72,7 @@ class InteractionTest extends TestCase
         ]);
     }
 
-    public function testToggleBatch(): void
+    public function testToggleLikeBatch(): void
     {
         $this->expectsEvents(SongsBatchLiked::class);