diff --git a/app/backend/src/routes/admin-stream.ts b/app/backend/src/routes/admin-stream.ts
new file mode 100644
index 0000000..4a05d0f
--- /dev/null
+++ b/app/backend/src/routes/admin-stream.ts
@@ -0,0 +1,13 @@
+import type { FastifyInstance } from 'fastify';
+import { requireAuth } from '../plugins/session.js';
+import { publishVisitorCount, setupSse, subscribeRealtime, writeSse } from '../lib/realtime.js';
+
+export default async function adminStreamRoutes(app: FastifyInstance) {
+  app.get('/api/v1/admin/stream', { preHandler: requireAuth(['admin', 'editor']) }, async (_req, reply) => {
+    setupSse(reply);
+    const data = await publishVisitorCount();
+    writeSse(reply, 'visitor_update', data);
+    await subscribeRealtime(reply, (event) => ['visitor_update', 'activity', 'view_update'].includes(event.event));
+    return reply;
+  });
+}