diff --git a/src/api_hooks.py b/src/api_hooks.py
index c2b0108b..0ac58a39 100644
--- a/src/api_hooks.py
+++ b/src/api_hooks.py
@@ -231,6 +231,15 @@ class HookHandler(BaseHTTPRequestHandler):
       perf = _get_app_attr(app, "perf_monitor")
       if perf:
        result.update(perf.get_metrics())
+      # Warmup status (startup_speedup_20260606 Phase 7). Exposes the
+      # AppController's warmup_status() result so external clients and
+      # tests can poll until all heavy modules are loaded.
+      controller = _get_app_attr(app, "controller", None)
+      if controller and hasattr(controller, "warmup_status"):
+       try:
+        result["warmup"] = controller.warmup_status()
+       except Exception:
+        result["warmup"] = {"pending": [], "completed": [], "failed": []}
      finally: event.set()
     lock = _get_app_attr(app, "_pending_gui_tasks_lock")
     tasks = _get_app_attr(app, "_pending_gui_tasks")