diff --git a/apps/api/config/initializers/admin_cookie.rb b/apps/api/config/initializers/admin_cookie.rb
new file mode 100644
index 0000000..b1d33de
--- /dev/null
+++ b/apps/api/config/initializers/admin_cookie.rb
@@ -0,0 +1,20 @@
+# Set a JS-readable cookie when an admin signs in/out.
+# Devise's remember_admin_user_token cookie is HttpOnly,
+# so the frontend cannot read it. This non-HttpOnly cookie
+# lets the frontend show/hide the Admin menu link.
+
+Rails.application.config.to_prepare do
+  ApplicationController.class_eval do
+    after_action :sync_admin_cookie
+
+    private
+
+    def sync_admin_cookie
+      if current_admin_user
+        cookies[:is_admin] = { value: "1", httponly: false, same_site: :lax, path: "/" }
+      elsif cookies[:is_admin]
+        cookies.delete(:is_admin, path: "/")
+      end
+    end
+  end
+end
diff --git a/apps/frontend/src/layout/AppLayout.vue b/apps/frontend/src/layout/AppLayout.vue
index e8487c1..d5da1be 100644
--- a/apps/frontend/src/layout/AppLayout.vue
+++ b/apps/frontend/src/layout/AppLayout.vue
@@ -87,7 +87,7 @@ const ui = useUiStore()
 const { isRetroMode, menuOpen } = storeToRefs(ui)
 const { toggleMenu, toggleRetroMode } = ui
 const route = useRoute()
-const isAdmin = computed(() => !!getCookie('remember_admin_user_token'))
+const isAdmin = computed(() => !!getCookie('is_admin'))
 
 watch(() => route.path, () => {
   ui.closeMenu()