diff --git a/Hypercube.Input/Key.cs b/Hypercube.Input/Key.cs
index a14da2b..3593ff6 100644
--- a/Hypercube.Input/Key.cs
+++ b/Hypercube.Input/Key.cs
@@ -1,5 +1,8 @@
-namespace Hypercube.Input;
+using JetBrains.Annotations;
 
+namespace Hypercube.Input;
+
+[PublicAPI]
 public enum Key
 {
     Unknown = -1,
diff --git a/Hypercube.Input/KeyModifiers.cs b/Hypercube.Input/KeyModifiers.cs
index 0a03927..d1591ef 100644
--- a/Hypercube.Input/KeyModifiers.cs
+++ b/Hypercube.Input/KeyModifiers.cs
@@ -1,6 +1,8 @@
-namespace Hypercube.Input;
+using JetBrains.Annotations;
 
-[Flags]
+namespace Hypercube.Input;
+
+[PublicAPI, Flags]
 public enum KeyModifiers
 {
     None = default,
diff --git a/Hypercube.Input/KeyState.cs b/Hypercube.Input/KeyState.cs
index bfa4a2d..2f95201 100644
--- a/Hypercube.Input/KeyState.cs
+++ b/Hypercube.Input/KeyState.cs
@@ -1,5 +1,8 @@
-namespace Hypercube.Input;
+using JetBrains.Annotations;
 
+namespace Hypercube.Input;
+
+[PublicAPI]
 public enum KeyState
 {
     Released,
diff --git a/Hypercube.Input/KeyStateChangedArgs.cs b/Hypercube.Input/KeyStateChangedArgs.cs
index ff6ca14..8855fbf 100644
--- a/Hypercube.Input/KeyStateChangedArgs.cs
+++ b/Hypercube.Input/KeyStateChangedArgs.cs
@@ -1,5 +1,8 @@
-namespace Hypercube.Input;
+using JetBrains.Annotations;
 
+namespace Hypercube.Input;
+
+[PublicAPI]
 public class KeyStateChangedArgs
 {
     public bool Shift => Modifiers.HasFlag(KeyModifiers.Shift);
@@ -12,7 +15,6 @@ public class KeyStateChangedArgs
     public readonly Key Key;
     public readonly KeyState State;
     public readonly KeyModifiers Modifiers;
-    
     public readonly int ScanCode;
 
     public KeyStateChangedArgs(Key key, KeyState state, KeyModifiers modifiers, int scanCode)
diff --git a/Hypercube.Input/MouseButton.cs b/Hypercube.Input/MouseButton.cs
index 004243a..817507f 100644
--- a/Hypercube.Input/MouseButton.cs
+++ b/Hypercube.Input/MouseButton.cs
@@ -1,5 +1,8 @@
-namespace Hypercube.Input;
+using JetBrains.Annotations;
 
+namespace Hypercube.Input;
+
+[PublicAPI]
 public enum MouseButton
 {
     Left = 0,
diff --git a/Hypercube.Input/MouseButtonChangedArgs.cs b/Hypercube.Input/MouseButtonChangedArgs.cs
index 855764d..987e5ba 100644
--- a/Hypercube.Input/MouseButtonChangedArgs.cs
+++ b/Hypercube.Input/MouseButtonChangedArgs.cs
@@ -1,5 +1,8 @@
-namespace Hypercube.Input;
+using JetBrains.Annotations;
 
+namespace Hypercube.Input;
+
+[PublicAPI]
 public class MouseButtonChangedArgs
 {
     public bool Shift => Modifiers.HasFlag(KeyModifiers.Shift);