diff --git a/Unity-Package/Assets/root/Editor/Scripts/Tools/ParticleSystem.Get.cs b/Unity-Package/Assets/root/Editor/Scripts/Tools/ParticleSystem.Get.cs
index 4ab239f..9150162 100644
--- a/Unity-Package/Assets/root/Editor/Scripts/Tools/ParticleSystem.Get.cs
+++ b/Unity-Package/Assets/root/Editor/Scripts/Tools/ParticleSystem.Get.cs
@@ -27,7 +27,9 @@ public partial class Tool_ParticleSystem
         [McpPluginTool
         (
             ParticleSystemGetToolId,
-            Title = "ParticleSystem / Get"
+            Title = "ParticleSystem / Get",
+            ReadOnlyHint = true,
+            IdempotentHint = true
         )]
         [Description("Get detailed information about a ParticleSystem component on a GameObject. " +
             "Returns particle system state and optionally serialized data for each module. " +
diff --git a/Unity-Package/Assets/root/Editor/Scripts/Tools/ParticleSystem.Modify.cs b/Unity-Package/Assets/root/Editor/Scripts/Tools/ParticleSystem.Modify.cs
index 0e92758..0490b0b 100644
--- a/Unity-Package/Assets/root/Editor/Scripts/Tools/ParticleSystem.Modify.cs
+++ b/Unity-Package/Assets/root/Editor/Scripts/Tools/ParticleSystem.Modify.cs
@@ -31,7 +31,8 @@ public partial class Tool_ParticleSystem
         [McpPluginTool
         (
             ParticleSystemModifyToolId,
-            Title = "ParticleSystem / Modify"
+            Title = "ParticleSystem / Modify",
+            IdempotentHint = true
         )]
         [Description("Modify a ParticleSystem component on a GameObject. " +
             "Provide the data model with only the modules you want to change. " +