diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/AnimBlueprint_Create.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/AnimBlueprint_Create.h
index 0e3f22d4..ae5b439c 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/AnimBlueprint_Create.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/AnimBlueprint_Create.h
@@ -39,7 +39,7 @@ public:
 		return TEXT("Create a new Animation Blueprint asset with a specified skeleton.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPErrorCallback CB(Result);
 
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/AnimBlueprint_ListSlotNames.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/AnimBlueprint_ListSlotNames.h
index ba9ac9a2..6a57756f 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/AnimBlueprint_ListSlotNames.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/AnimBlueprint_ListSlotNames.h
@@ -27,7 +27,7 @@ public:
 		return TEXT("List all animation slot names used in an Animation Blueprint.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPAssets<UAnimBlueprint> Assets;
 		if (!Assets.Exact(Blueprint).Errors(Result).ENone().ETwo().Load()) return;
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/AnimBlueprint_ListSyncGroups.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/AnimBlueprint_ListSyncGroups.h
index e2a0e6a3..102caf98 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/AnimBlueprint_ListSyncGroups.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/AnimBlueprint_ListSyncGroups.h
@@ -27,7 +27,7 @@ public:
 		return TEXT("List all sync group names used in an Animation Blueprint.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UAnimBlueprint* AnimBP = F.Walk(Path).Cast<UAnimBlueprint>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/AnimBlueprint_SetBlendSpaceSamples.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/AnimBlueprint_SetBlendSpaceSamples.h
index 82a1c48f..af9b3be0 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/AnimBlueprint_SetBlendSpaceSamples.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/AnimBlueprint_SetBlendSpaceSamples.h
@@ -65,7 +65,7 @@ public:
 			"Replaces all existing samples.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		// Load the blend space
 		MCPAssets<UBlendSpace> Assets;
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Backup.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Backup.h
index f891087b..845d1543 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Backup.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Backup.h
@@ -27,7 +27,7 @@ public:
 		return TEXT("Copy an asset's .uasset file to a .uasset.bak backup.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		FString Filename = FPaths::ConvertRelativePathToFull(
 			FPackageName::LongPackageNameToFilename(AssetPath, FPackageName::GetAssetPackageExtension()));
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Delete.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Delete.h
index 171130f9..16d7614a 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Delete.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Delete.h
@@ -33,7 +33,7 @@ public:
 			"Use force=true to skip the reference check.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		// Verify the asset file exists on disk
 		FString PackageFilename = FPackageName::LongPackageNameToFilename(
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_FindReferences.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_FindReferences.h
index 4f04ec05..1c2ab489 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_FindReferences.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_FindReferences.h
@@ -25,7 +25,7 @@ public:
 		return TEXT("Find all assets that reference a given asset.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		IAssetRegistry& Registry = *IAssetRegistry::Get();
 
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Rename.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Rename.h
index c57f7e66..2c39a76f 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Rename.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Rename.h
@@ -30,7 +30,7 @@ public:
 		return TEXT("Rename or move an asset with reference fixup.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		// Load the asset
 		MCPAssets<UObject> Assets;
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Restore.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Restore.h
index 41f2a4a0..ef73812a 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Restore.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Restore.h
@@ -27,7 +27,7 @@ public:
 		return TEXT("Restore a .uasset file from its .uasset.bak backup, reloading it in the editor.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		FString Filename = FPaths::ConvertRelativePathToFull(
 			FPackageName::LongPackageNameToFilename(AssetPath, FPackageName::GetAssetPackageExtension()));
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Search.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Search.h
index 6f36dd23..2c789690 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Search.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Asset_Search.h
@@ -31,7 +31,7 @@ public:
 		return TEXT("Search for assets by name and/or type. At least one of Query or Type must be specified.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		if (Query.IsEmpty() && Type.IsEmpty())
 		{
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/BlendSpace_Create.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/BlendSpace_Create.h
index 5cd7f568..94df63eb 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/BlendSpace_Create.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/BlendSpace_Create.h
@@ -33,7 +33,7 @@ public:
 		return TEXT("Create a new 2D Blend Space asset with a specified skeleton.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		if (!PackagePath.StartsWith(TEXT("/Game")))
 		{
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/BlueprintGraph_Create.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/BlueprintGraph_Create.h
index a139a31f..3bad1368 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/BlueprintGraph_Create.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/BlueprintGraph_Create.h
@@ -37,7 +37,7 @@ public:
 		return TEXT("Create a new function, macro, or custom event graph in a Blueprint.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		if (GraphType != TEXT("function") && GraphType != TEXT("macro") && GraphType != TEXT("customEvent"))
 		{
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/BlueprintGraph_Delete.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/BlueprintGraph_Delete.h
index 8bcb911b..6ad751dc 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/BlueprintGraph_Delete.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/BlueprintGraph_Delete.h
@@ -31,7 +31,7 @@ public:
 		return TEXT("Delete a function or macro graph from a Blueprint. Cannot delete EventGraph pages.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		F.Walk(Path);
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/BlueprintGraph_Rename.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/BlueprintGraph_Rename.h
index 559fa162..090ee29d 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/BlueprintGraph_Rename.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/BlueprintGraph_Rename.h
@@ -31,7 +31,7 @@ public:
 		return TEXT("Rename a function or macro graph in a Blueprint. Cannot rename EventGraph pages.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UEdGraph* TargetGraph = F.Walk(Graph).Cast<UEdGraph>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddComponent.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddComponent.h
index 60742b34..bdedf716 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddComponent.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddComponent.h
@@ -39,7 +39,7 @@ public:
 			"Optionally attach it to an existing parent component.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPAssets<UBlueprint> Assets;
 		if (!Assets.Exact(Blueprint).Errors(Result).ENone().ETwo().Load()) return;
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddEventDispatcher.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddEventDispatcher.h
index 361eaeb1..3e532d09 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddEventDispatcher.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddEventDispatcher.h
@@ -49,7 +49,7 @@ public:
 		return TEXT("Create a new multicast event dispatcher on a Blueprint, optionally with parameters.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UBlueprint* BP = F.Walk(Path).Cast<UBlueprint>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddFunctionParameter.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddFunctionParameter.h
index 2a11ac4f..e2ddd952 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddFunctionParameter.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddFunctionParameter.h
@@ -41,7 +41,7 @@ public:
 		return TEXT("Add a new parameter to a function, custom event, or event dispatcher in a Blueprint.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPAssets<UBlueprint> Assets;
 		if (!Assets.Exact(Blueprint).Errors(Result).ENone().ETwo().Load()) return;
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddInterface.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddInterface.h
index f949a30d..1bd0f34d 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddInterface.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddInterface.h
@@ -32,7 +32,7 @@ public:
 			"Creates stub function graphs for each interface function.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPAssets<UBlueprint> Assets;
 		if (!Assets.Exact(Blueprint).Errors(Result).ENone().ETwo().Load()) return;
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddVariable.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddVariable.h
index 0c9e4ad1..2c5ef64c 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddVariable.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_AddVariable.h
@@ -42,7 +42,7 @@ public:
 		return TEXT("Add a new member variable to a Blueprint.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPAssets<UBlueprint> Assets;
 		if (!Assets.Exact(Blueprint).Errors(Result).ENone().ETwo().Load()) return;
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ChangeFunctionParameterType.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ChangeFunctionParameterType.h
index 9a2a85d7..8e0b1375 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ChangeFunctionParameterType.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ChangeFunctionParameterType.h
@@ -44,7 +44,7 @@ public:
 		return TEXT("Change the type of an existing parameter on a function or custom event in a Blueprint.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPAssets<UBlueprint> Assets;
 		if (!Assets.Exact(Blueprint).Errors(Result).ENone().ETwo().Load()) return;
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ChangeVariableType.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ChangeVariableType.h
index faccd0d1..4a1a2817 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ChangeVariableType.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ChangeVariableType.h
@@ -43,7 +43,7 @@ public:
 			"Supports dry-run mode to preview affected nodes before committing.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UBlueprint* BP = F.Walk(Blueprint).Cast<UBlueprint>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Compile.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Compile.h
index 9c1d49a6..32230cf2 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Compile.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Compile.h
@@ -102,7 +102,7 @@ public:
 		return bIsValid;
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPAssets<UBlueprint> Finder;
 		Finder.Scan<UBlueprint>().Scan<UWorld>().Errors(Result);
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Create.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Create.h
index 23c70cd6..ecabe1d4 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Create.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Create.h
@@ -36,7 +36,7 @@ public:
 		return TEXT("Create a new Blueprint asset with a specified parent class and type.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPErrorCallback Error(Result);
 
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Diff.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Diff.h
index bbd87ac2..5f8921b7 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Diff.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Diff.h
@@ -37,7 +37,7 @@ public:
 			"finding divergence after copy-paste, or auditing consistency.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		// Load both blueprints
 		MCPAssets<UBlueprint> AssetsA;
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Dump.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Dump.h
index 1d33bd5a..05b8857c 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Dump.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Dump.h
@@ -31,7 +31,7 @@ public:
 			"and graph names. Does not include graph contents (use DumpGraphs for that).");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UBlueprint* BP = F.Walk(Blueprint).Cast<UBlueprint>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ListComponents.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ListComponents.h
index 2cca4427..1cea7036 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ListComponents.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ListComponents.h
@@ -29,7 +29,7 @@ public:
 			"showing hierarchy and component classes.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		F.Walk(Path);
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ListEventDispatchers.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ListEventDispatchers.h
index 5b84e761..d17b0cf4 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ListEventDispatchers.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ListEventDispatchers.h
@@ -31,7 +31,7 @@ public:
 		return TEXT("List all event dispatchers on a Blueprint, including their parameter signatures.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UBlueprint* BP = F.Walk(Path).Cast<UBlueprint>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ListInterfaces.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ListInterfaces.h
index a6d2593f..1ebfa294 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ListInterfaces.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_ListInterfaces.h
@@ -27,7 +27,7 @@ public:
 			"including their function graphs.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		F.Walk(Path);
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RefreshAllNodes.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RefreshAllNodes.h
index 9a7e0840..92ebf4cc 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RefreshAllNodes.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RefreshAllNodes.h
@@ -31,7 +31,7 @@ public:
 			"Reports compiler warnings and errors.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		// Load Blueprint
 		MCPAssets<UBlueprint> Assets;
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RemoveComponent.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RemoveComponent.h
index 33b42411..a4592d1f 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RemoveComponent.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RemoveComponent.h
@@ -31,7 +31,7 @@ public:
 		return TEXT("Remove a component from a Blueprint's SimpleConstructionScript.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UBlueprint* BP = F.Walk(Blueprint).Cast<UBlueprint>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RemoveFunctionParameter.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RemoveFunctionParameter.h
index 427d8676..fdff49d8 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RemoveFunctionParameter.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RemoveFunctionParameter.h
@@ -36,7 +36,7 @@ public:
 		return TEXT("Remove a parameter from a function or custom event in a Blueprint.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPAssets<UBlueprint> Assets;
 		if (!Assets.Exact(Blueprint).Errors(Result).ENone().ETwo().Load()) return;
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RemoveInterface.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RemoveInterface.h
index f9967ed8..15b1b9d9 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RemoveInterface.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RemoveInterface.h
@@ -34,7 +34,7 @@ public:
 			"Optionally preserve the function graphs as regular functions.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPAssets<UBlueprint> Assets;
 		if (!Assets.Exact(Blueprint).Errors(Result).ENone().ETwo().Load()) return;
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RemoveVariable.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RemoveVariable.h
index 8d68fe54..07bfb5b8 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RemoveVariable.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_RemoveVariable.h
@@ -30,7 +30,7 @@ public:
 		return TEXT("Remove a member variable from a Blueprint.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UBlueprint* BP = F.Walk(Blueprint).Cast<UBlueprint>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Reparent.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Reparent.h
index 1d4a89a0..f6c42a7a 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Reparent.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Reparent.h
@@ -32,7 +32,7 @@ public:
 		return TEXT("Change a Blueprint's parent class. Accepts C++ class names or Blueprint names.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		// Load Blueprint
 		MCPAssets<UBlueprint> Assets;
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Search.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Search.h
index c9219fb2..8f931614 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Search.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_Search.h
@@ -36,7 +36,7 @@ public:
 		return TEXT("List all Blueprint assets in the project, with optional filtering by name, parent class, or type.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPAssets<UObject> Assets;
 		Assets.NoScans().Substring(Query).Limit(500).Errors(Result);
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_SearchContents.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_SearchContents.h
index 49478844..bc245e8f 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_SearchContents.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Blueprint_SearchContents.h
@@ -41,7 +41,7 @@ public:
 		return TEXT("Search across all Blueprint graphs for nodes matching a query string.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		int32 Limit = (MaxResults > 0) ? FMath::Clamp(MaxResults, 1, 200) : 50;
 		int32 Count = 0;
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Class_Search.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Class_Search.h
index 68b22577..2a871402 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Class_Search.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Class_Search.h
@@ -36,7 +36,7 @@ public:
 			"Returns class names, parent class, package, and flags.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		Limit = FMath::Clamp(Limit, 1, 500);
 
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Class_ShowProperties.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Class_ShowProperties.h
index 52fe6cdf..4c3e04c4 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Class_ShowProperties.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Class_ShowProperties.h
@@ -27,7 +27,7 @@ public:
 		return TEXT("List properties on a UClass, including type, owning class, and property flags.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		UClass* FoundClass = MCPUtils::FindClassByName(ClassName);
 		if (!FoundClass)
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Editor_ListOpenAssets.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Editor_ListOpenAssets.h
index cd0fd465..a12a6eec 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Editor_ListOpenAssets.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Editor_ListOpenAssets.h
@@ -21,7 +21,7 @@ public:
 		return TEXT("List all currently open asset editors, showing which has focus and whether they have unsaved changes.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		UAssetEditorSubsystem* Sub = GEditor->GetEditorSubsystem<UAssetEditorSubsystem>();
 		if (!Sub)
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Editor_OpenAsset.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Editor_OpenAsset.h
index 21aa9bea..fe07a6ea 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Editor_OpenAsset.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Editor_OpenAsset.h
@@ -25,7 +25,7 @@ public:
 		return TEXT("Open an asset in its editor and bring it to focus.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UObject* Obj = F.Walk(Path).Cast<UObject>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Enum_Create.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Enum_Create.h
index 5e6e6f2d..4db2259a 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Enum_Create.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Enum_Create.h
@@ -33,7 +33,7 @@ public:
 		return TEXT("Create a new UserDefinedEnum asset with the specified values.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		FString PackagePath, AssetName;
 		if (!MCPUtils::SplitAssetPath(AssetPath, PackagePath, AssetName))
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_Create.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_Create.h
index c8bea8ee..eea775c6 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_Create.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_Create.h
@@ -49,7 +49,7 @@ public:
 			"Use GraphNodeSearchTypes first to find the exact action name.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UEdGraph* TargetGraph = F.Walk(Graph).Cast<UEdGraph>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_Delete.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_Delete.h
index e05cfec3..19670733 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_Delete.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_Delete.h
@@ -27,7 +27,7 @@ public:
 			"Cannot delete undeletable nodes (entry points, root nodes, etc).");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UEdGraphNode* FoundNode = F.Walk(Node).Cast<UEdGraphNode>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_Duplicate.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_Duplicate.h
index 8bce4e03..5f5502c3 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_Duplicate.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_Duplicate.h
@@ -39,7 +39,7 @@ public:
 			"Connections are not preserved on the duplicates.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UEdGraph* TargetGraph = F.Walk(Graph).Cast<UEdGraph>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_GetComment.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_GetComment.h
index ff2b9a92..c61e816b 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_GetComment.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_GetComment.h
@@ -26,7 +26,7 @@ public:
 		return TEXT("Get the comment text and bubble visibility of a node.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UEdGraphNode* FoundNode = F.Walk(Node).Cast<UEdGraphNode>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_SearchTypes.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_SearchTypes.h
index 8c86ffc6..b4e511b4 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_SearchTypes.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_SearchTypes.h
@@ -35,7 +35,7 @@ public:
 			"Returns full action names for use with GraphNodeCreate.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		int32 ClampedMax = FMath::Clamp(MaxResults, 1, 500);
 
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_SetComment.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_SetComment.h
index fd7b971c..b8d5470b 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_SetComment.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_SetComment.h
@@ -29,7 +29,7 @@ public:
 		return TEXT("Set a node's comment text. Makes the comment bubble visible if non-empty.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UEdGraphNode* FoundNode = F.Walk(Node).Cast<UEdGraphNode>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_SetPositions.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_SetPositions.h
index 3998891a..fe8d4e42 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_SetPositions.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_SetPositions.h
@@ -46,7 +46,7 @@ public:
 		return TEXT("Reposition one or more nodes in a Blueprint graph.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UBlueprint* BP = F.Walk(Blueprint).Cast<UBlueprint>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphPin_Connect.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphPin_Connect.h
index 84d88a9a..c6960271 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphPin_Connect.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphPin_Connect.h
@@ -42,7 +42,7 @@ public:
 		return TEXT("Connect pins between nodes in a Blueprint graph.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UBlueprint* BP = F.Walk(Blueprint).Cast<UBlueprint>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphPin_Disconnect.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphPin_Disconnect.h
index 516dfbbd..e3efe922 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphPin_Disconnect.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphPin_Disconnect.h
@@ -43,7 +43,7 @@ public:
 			"Can disconnect a specific link or all links on a pin.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UBlueprint* BP = F.Walk(Blueprint).Cast<UBlueprint>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphPin_SetDefault.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphPin_SetDefault.h
index 7c17ddb5..8d93f019 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphPin_SetDefault.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphPin_SetDefault.h
@@ -46,7 +46,7 @@ public:
 		return TEXT("Set the default value of input pins on nodes.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		// Fetch the graph once.
 		MCPFetcher GraphFetcher(Result);
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Graph_Dump.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Graph_Dump.h
index ea9c2c46..144e063e 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Graph_Dump.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Graph_Dump.h
@@ -31,7 +31,7 @@ public:
 			"If given a blueprint or material, dumps all graphs. If given a specific graph, dumps only that one.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		F.Walk(Path);
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialFunction_Create.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialFunction_Create.h
index 509b589e..a2e15937 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialFunction_Create.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialFunction_Create.h
@@ -35,7 +35,7 @@ public:
 		return TEXT("Create a new UMaterialFunction asset with an optional description.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		if (!PackagePath.StartsWith(TEXT("/Game")))
 		{
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialInstance_ClearParameter.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialInstance_ClearParameter.h
index 3d0d93dc..79965bd1 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialInstance_ClearParameter.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialInstance_ClearParameter.h
@@ -36,7 +36,7 @@ public:
 		return TEXT("Remove a parameter override from a Material Instance, reverting it to the parent material's value.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UMaterialInstanceConstant* MI = F.Asset(Path).Cast<UMaterialInstanceConstant>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialInstance_Create.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialInstance_Create.h
index ca4f1f62..880229b7 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialInstance_Create.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialInstance_Create.h
@@ -37,7 +37,7 @@ public:
 		return TEXT("Create a new Material Instance Constant asset with a specified parent material.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		if (!PackagePath.StartsWith(TEXT("/Game")))
 		{
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialInstance_DumpParameters.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialInstance_DumpParameters.h
index 76a01638..452f2abf 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialInstance_DumpParameters.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialInstance_DumpParameters.h
@@ -27,7 +27,7 @@ public:
 		return TEXT("List all parameters on a Material Instance, showing current values and which are overridden.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UMaterialInstanceConstant* MI = F.Asset(Path).Cast<UMaterialInstanceConstant>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialInstance_SetParameter.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialInstance_SetParameter.h
index 19d097e4..0e2c43f6 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialInstance_SetParameter.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/MaterialInstance_SetParameter.h
@@ -40,7 +40,7 @@ public:
 		return TEXT("Set a parameter override on a Material Instance.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UMaterialInstanceConstant* MI = F.Asset(Path).Cast<UMaterialInstanceConstant>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Material_Compile.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Material_Compile.h
index 206748c7..95b8b874 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Material_Compile.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Material_Compile.h
@@ -27,7 +27,7 @@ public:
 		return TEXT("Force recompile a material and check for compilation errors.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		// Load material
 		MCPAssets<UMaterial> Assets;
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Material_Create.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Material_Create.h
index 976f893e..46080991 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Material_Create.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Material_Create.h
@@ -42,7 +42,7 @@ public:
 		return TEXT("Create a new UMaterial asset with optional domain, blend mode, and two-sided settings.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		if (!PackagePath.StartsWith(TEXT("/Game")))
 		{
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Material_DumpParameters.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Material_DumpParameters.h
index bf975c46..78aa695d 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Material_DumpParameters.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Material_DumpParameters.h
@@ -27,7 +27,7 @@ public:
 		return TEXT("List all parameters on a Material, showing their default values.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPFetcher F(Result);
 		UMaterial* Mat = F.Asset(Path).Cast<UMaterial>();
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Property_Dump.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Property_Dump.h
index 512e8b4c..efb156fa 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Property_Dump.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Property_Dump.h
@@ -35,7 +35,7 @@ public:
 			"showing current values and which properties are editable.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		// Resolve the path to an object and get its editable template.
 		MCPFetcher F(Result);
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Property_Set.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Property_Set.h
index 34bc2501..3ad71fa7 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Property_Set.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Property_Set.h
@@ -29,7 +29,7 @@ public:
 			"Properties is a JSON object like {\"TwoSided\": \"true\", \"BlendMode\": \"BLEND_Translucent\"}.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		// Resolve the path to an object and get its editable template.
 		MCPFetcher F(Result);
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/ShowCommands.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/ShowCommands.h
index 5717f4d0..92c57b3f 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/ShowCommands.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/ShowCommands.h
@@ -23,7 +23,7 @@ public:
 		return TEXT("List all available commands with their descriptions.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		FString QueryLower = Query.ToLower();
 		FString PrevGroup;
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_AddState.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_AddState.h
index b5cde344..c6edc953 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_AddState.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_AddState.h
@@ -49,7 +49,7 @@ public:
 			"Optionally assign an animation asset to the state.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		// Resolve the anim blueprint
 		MCPFetcher F(Result);
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_AddTransition.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_AddTransition.h
index 667bff07..bcadfa6f 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_AddTransition.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_AddTransition.h
@@ -48,7 +48,7 @@ public:
 		return TEXT("Add a transition between two states in an animation state machine graph.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPAssets<UAnimBlueprint> Assets;
 		if (!Assets.Exact(Blueprint).Errors(Result).ENone().ETwo().Load()) return;
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_RemoveState.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_RemoveState.h
index 7da8d721..bf34f9f1 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_RemoveState.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_RemoveState.h
@@ -33,7 +33,7 @@ public:
 		return TEXT("Remove a state and its connected transitions from an animation state machine graph.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		// Fetch the state machine graph via MCPFetcher
 		MCPFetcher F(Result);
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_SetAnimation.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_SetAnimation.h
index 05c03feb..36e5dfed 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_SetAnimation.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_SetAnimation.h
@@ -43,7 +43,7 @@ public:
 		return TEXT("Set or replace the animation sequence played by a state in an animation state machine.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		// Resolve the anim blueprint
 		MCPFetcher F(Result);
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_SetBlendSpace.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_SetBlendSpace.h
index 975ea2bb..305cb95d 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_SetBlendSpace.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_SetBlendSpace.h
@@ -53,7 +53,7 @@ public:
 			"and optionally wire blueprint variables to the X and Y axis inputs.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		// Load the anim blueprint
 		MCPAssets<UAnimBlueprint> Assets;
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_SetTransitionRule.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_SetTransitionRule.h
index 68cf38b4..e0f358ba 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_SetTransitionRule.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/StateMachine_SetTransitionRule.h
@@ -53,7 +53,7 @@ public:
 		return TEXT("Update properties on an existing transition between two states in an animation state machine.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		MCPAssets<UAnimBlueprint> Assets;
 		if (!Assets.Exact(Blueprint).Errors(Result).ENone().ETwo().Load()) return;
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Struct_Create.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Struct_Create.h
index d3da7ac2..3fb194d7 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Struct_Create.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/Struct_Create.h
@@ -49,7 +49,7 @@ public:
 		return TEXT("Create a new UserDefinedStruct asset with optional initial properties.");
 	}
 
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) override
+	virtual void Handle(FStringBuilderBase& Result) override
 	{
 		if (!PackagePath.StartsWith(TEXT("/Game")))
 		{
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Private/MCPServer.cpp b/Plugins/BlueprintMCP/Source/BlueprintMCP/Private/MCPServer.cpp
index 0e465b13..c6010171 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Private/MCPServer.cpp
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Private/MCPServer.cpp
@@ -294,7 +294,7 @@ FString UMCPServer::HandleRequest(const FString& Line)
 
 	// Invoke the handler.
 	TStringBuilder<32768> TextResult;
-	Handler->Handle(&*Request, TextResult);
+	Handler->Handle(TextResult);
 	FString Result = TextResult.ToString();
 	for (int32 i = 0; i < Result.Len(); ++i)
 	{
diff --git a/Plugins/BlueprintMCP/Source/BlueprintMCP/Public/MCPHandler.h b/Plugins/BlueprintMCP/Source/BlueprintMCP/Public/MCPHandler.h
index fc69c8b5..ae5d3554 100644
--- a/Plugins/BlueprintMCP/Source/BlueprintMCP/Public/MCPHandler.h
+++ b/Plugins/BlueprintMCP/Source/BlueprintMCP/Public/MCPHandler.h
@@ -51,5 +51,5 @@ public:
 	virtual FString GetDescription() const = 0;
 
 	// Called after parameter fields have been populated from JSON.
-	virtual void Handle(const FJsonObject* Json, FStringBuilderBase& Result) {}
+	virtual void Handle(FStringBuilderBase& Result) {}
 };