diff --git a/ui/litellm-dashboard/src/app/(dashboard)/hooks/router/useRouterFields.ts b/ui/litellm-dashboard/src/app/(dashboard)/hooks/router/useRouterFields.ts
index 5fa22b41096..9739bea4d99 100644
--- a/ui/litellm-dashboard/src/app/(dashboard)/hooks/router/useRouterFields.ts
+++ b/ui/litellm-dashboard/src/app/(dashboard)/hooks/router/useRouterFields.ts
@@ -21,13 +21,18 @@ export interface RouterFieldsResponse {
 const routerFieldsKeys = createQueryKeys("routerFields");
 
 const deriveErrorMessage = (errorData: any): string => {
-  return (
+  const raw =
     (errorData?.error && (errorData.error.message || errorData.error)) ||
     errorData?.message ||
     errorData?.detail ||
     errorData?.error ||
-    JSON.stringify(errorData)
-  );
+    JSON.stringify(errorData);
+  // Backend often returns { detail: { error: "..." } }; avoid showing [object Object]
+  if (typeof raw === "object" && raw !== null) {
+    const msg = raw.error ?? raw.message;
+    return typeof msg === "string" ? msg : JSON.stringify(raw);
+  }
+  return String(raw);
 };
 
 const getRouterFields = async (accessToken: string): Promise<RouterFieldsResponse> => {
diff --git a/ui/litellm-dashboard/src/components/mcp_tools/create_mcp_server.tsx b/ui/litellm-dashboard/src/components/mcp_tools/create_mcp_server.tsx
index a3e27fb68fa..f14d4031d25 100644
--- a/ui/litellm-dashboard/src/components/mcp_tools/create_mcp_server.tsx
+++ b/ui/litellm-dashboard/src/components/mcp_tools/create_mcp_server.tsx
@@ -305,7 +305,13 @@ const CreateMCPServer: React.FC<CreateMCPServerProps> = ({
         onCreateSuccess(response);
       }
     } catch (error) {
-      NotificationsManager.fromBackend("Error creating MCP Server: " + error);
+      const message =
+        error instanceof Error
+          ? error.message
+          : typeof error === "object" && error !== null && "error" in error
+            ? String((error as { error: unknown }).error)
+            : String(error);
+      NotificationsManager.fromBackend("Error creating MCP Server: " + message);
     } finally {
       setIsLoading(false);
     }
diff --git a/ui/litellm-dashboard/src/components/networking.tsx b/ui/litellm-dashboard/src/components/networking.tsx
index ca4c16a781f..d95c058aa40 100644
--- a/ui/litellm-dashboard/src/components/networking.tsx
+++ b/ui/litellm-dashboard/src/components/networking.tsx
@@ -8690,13 +8690,18 @@ export const perUserAnalyticsCall = async (
 };
 
 export const deriveErrorMessage = (errorData: any): string => {
-  return (
+  const raw =
     (errorData?.error && (errorData.error.message || errorData.error)) ||
     errorData?.message ||
     errorData?.detail ||
     errorData?.error ||
-    JSON.stringify(errorData)
-  );
+    JSON.stringify(errorData);
+  // Backend often returns { detail: { error: "..." } }; avoid showing [object Object]
+  if (typeof raw === "object" && raw !== null) {
+    const msg = raw.error ?? raw.message;
+    return typeof msg === "string" ? msg : JSON.stringify(raw);
+  }
+  return String(raw);
 };
 
 export interface LoginRequest {