diff --git a/ZeroSpace/ZeroSpace.Model/SystemMasteryData.cs b/ZeroSpace/ZeroSpace.Model/SystemMasteryData.cs
new file mode 100644
index 0000000..5f19f4e
--- /dev/null
+++ b/ZeroSpace/ZeroSpace.Model/SystemMasteryData.cs
@@ -0,0 +1,9 @@
+namespace ZeroSpace.Model;
+
+public sealed record SystemMasteryData(
+    string Id,
+    string Name,
+    IReadOnlyList<string> Levels,
+    IReadOnlyList<string> AvailableSystems,
+    IReadOnlyDictionary<string, double> Stats,
+    string Body);