diff --git a/unity-client/Assets/Scripts/Models/CoachResponse.cs b/unity-client/Assets/Scripts/Models/CoachResponse.cs
new file mode 100644
index 0000000..0a8fce5
--- /dev/null
+++ b/unity-client/Assets/Scripts/Models/CoachResponse.cs
@@ -0,0 +1,16 @@
+using System;
+using Newtonsoft.Json;
+
+namespace CommanderAILab.Models
+{
+    /// <summary>Maps to POST /api/coach/chat response.</summary>
+    [Serializable]
+    public class CoachResponse
+    {
+        [JsonProperty("reply")] public string reply;
+        [JsonProperty("deck_report")] public string deckReport;
+        [JsonProperty("suggestions")] public string[] suggestions;
+
+        public override string ToString() => reply ?? "(empty coach response)";
+    }
+}