diff --git a/monitoring_ui/src/App.jsx b/monitoring_ui/src/App.jsx
index eafb72a..88f7f8a 100644
--- a/monitoring_ui/src/App.jsx
+++ b/monitoring_ui/src/App.jsx
@@ -4,26 +4,10 @@ const runtime =
   typeof window !== "undefined" && window.__ENV__ ? window.__ENV__ : {};
 
 const configured = {
-  auth:
-    runtime.AUTH_API ||
-    import.meta.env.VITE_AUTH_API ||
-    "http://localhost:5000",
-  employee:
-    runtime.EMPLOYEE_API ||
-    import.meta.env.VITE_EMPLOYEE_API ||
-    "http://localhost:4000",
-  transit:
-    runtime.TRANSIT_API ||
-    import.meta.env.VITE_TRANSIT_API ||
-    "http://localhost:5001",
-  errors:
-    runtime.ERROR_LOG_API ||
-    import.meta.env.VITE_ERROR_LOG_API ||
-    "http://localhost:5003",
-  admin:
-    runtime.ADMIN_UI ||
-    import.meta.env.VITE_ADMIN_UI ||
-    "http://localhost:5174",
+  auth: runtime.AUTH_API || import.meta.env.VITE_AUTH_API || "",
+  employee: runtime.EMPLOYEE_API || import.meta.env.VITE_EMPLOYEE_API || "",
+  transit: runtime.TRANSIT_API || import.meta.env.VITE_TRANSIT_API || "",
+  errors: runtime.ERROR_LOG_API || import.meta.env.VITE_ERROR_LOG_API || "",
 };
 
 const serviceMeta = {
@@ -60,13 +44,6 @@ const serviceMeta = {
     data: "Centralized bad requests and service errors",
     routes: ["/health", "/error_log?limit=100"],
   },
-  admin: {
-    label: "Admin UI",
-    role: "Operator surface",
-    color: "violet",
-    data: "The deployed React administration console",
-    routes: ["/health"],
-  },
 };
 
 const healthPaths = {
@@ -74,7 +51,6 @@ const healthPaths = {
   employee: "/health",
   transit: "/health",
   errors: "/health",
-  admin: "/health",
 };
 const testerRoutes = [
   { service: "auth", method: "GET", path: "/me", label: "Current session" },
@@ -146,9 +122,19 @@ function App() {
   const checkService = useCallback(
     async (key) => {
       const started = performance.now();
+      const url = urls[key];
+      if (!url) {
+        return {
+          ok: false,
+          status: 0,
+          body: { error: "No URL configured" },
+          latency: 0,
+          checkedAt: new Date().toISOString(),
+        };
+      }
       const headers = token ? { Authorization: `Bearer ${token}` } : {};
       try {
-        const response = await fetch(`${urls[key]}${healthPaths[key]}`, {
+        const response = await fetch(`${url}${healthPaths[key]}`, {
           headers,
         });
         const body = await response.json().catch(() => null);