diff --git a/__init__.py b/__init__.py
index 3f1c494..8f9a991 100644
--- a/__init__.py
+++ b/__init__.py
@@ -44,6 +44,13 @@ def _record_prompt(class_types, prompt):
         tracker.record_usage(class_types, mapper)
     except Exception:
         logger.warning("nodes-stats: error recording node usage", exc_info=True)
+    try:
+        packages = {mapper.get_package(ct) for ct in class_types}
+        packages.discard("__builtin__")
+        packages.discard("__unknown__")
+        tracker.reset_trials_for(packages)
+    except Exception:
+        logger.warning("nodes-stats: error resetting trials", exc_info=True)
     try:
         models = model_mapper.extract_models_from_prompt(prompt)
         if models:
@@ -52,6 +59,13 @@ def _record_prompt(class_types, prompt):
         logger.warning("nodes-stats: error recording model usage", exc_info=True)
 
 
+# Age temporary-enable trials once per process start (one "boot").
+try:
+    tracker.tick_boot_days()
+except Exception:
+    logger.warning("nodes-stats: error ticking trial boot days", exc_info=True)
+
+
 PromptServer.instance.add_on_prompt_handler(on_prompt_handler)
 
 
@@ -99,3 +113,40 @@ async def reset_stats(request):
     except Exception:
         logger.error("nodes-stats: error resetting stats", exc_info=True)
         return web.json_response({"error": "internal error"}, status=500)
+
+
+@routes.get("/nodes-stats/trials")
+async def get_trials(request):
+    try:
+        return web.json_response(tracker.get_trials())
+    except Exception:
+        logger.error("nodes-stats: error getting trials", exc_info=True)
+        return web.json_response({"error": "internal error"}, status=500)
+
+
+@routes.post("/nodes-stats/trials/start")
+async def start_trial(request):
+    try:
+        data = await request.json()
+        package = data.get("package")
+        if not package:
+            return web.json_response({"error": "package required"}, status=400)
+        tracker.start_trial(package)
+        return web.json_response({"status": "ok"})
+    except Exception:
+        logger.error("nodes-stats: error starting trial", exc_info=True)
+        return web.json_response({"error": "internal error"}, status=500)
+
+
+@routes.post("/nodes-stats/trials/stop")
+async def stop_trial(request):
+    try:
+        data = await request.json()
+        package = data.get("package")
+        if not package:
+            return web.json_response({"error": "package required"}, status=400)
+        tracker.stop_trial(package)
+        return web.json_response({"status": "ok"})
+    except Exception:
+        logger.error("nodes-stats: error stopping trial", exc_info=True)
+        return web.json_response({"error": "internal error"}, status=500)