diff --git a/Dalamud/Utility/Api13ToDoAttribute.cs b/Dalamud/Utility/Api13ToDoAttribute.cs
new file mode 100644
index 000000000..576401cda
--- /dev/null
+++ b/Dalamud/Utility/Api13ToDoAttribute.cs
@@ -0,0 +1,24 @@
+namespace Dalamud.Utility;
+
+/// <summary>
+/// Utility class for marking something to be changed for API 13, for ease of lookup.
+/// </summary>
+[AttributeUsage(AttributeTargets.All, Inherited = false)]
+internal sealed class Api13ToDoAttribute : Attribute
+{
+    /// <summary>
+    /// Marks that this should be made internal.
+    /// </summary>
+    public const string MakeInternal = "Make internal.";
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="Api13ToDoAttribute"/> class.
+    /// </summary>
+    /// <param name="what">The explanation.</param>
+    /// <param name="what2">The explanation 2.</param>
+    public Api13ToDoAttribute(string what, string what2 = "")
+    {
+        _ = what;
+        _ = what2;
+    }
+}