diff --git a/site/app.py b/site/app.py
index 6af159f..6d30957 100644
--- a/site/app.py
+++ b/site/app.py
@@ -6,7 +6,7 @@ from routes.main import bp as main_bp
 from routes.api import bp as api_bp
 from routes.api_test import bp as api_test_bp
 
-VERSION = "1.0.35"
+VERSION = "1.0.36"
 
 app = Flask(__name__, template_folder="templates", static_folder="static")
 app.config["NUBES_API_ENDPOINT"] = os.getenv("NUBES_API_ENDPOINT", "https://lk-api-gateway-dev.ngcloud.ru/api/v1/svc")
diff --git a/site/operations/tracker.py b/site/operations/tracker.py
new file mode 100644
index 0000000..0dce8e1
--- /dev/null
+++ b/site/operations/tracker.py
@@ -0,0 +1,43 @@
+"""Трекер созданных инстансов — только те что породило приложение."""
+import json
+import os
+import threading
+
+_LOCK = threading.Lock()
+_PATH = os.path.join(os.path.dirname(__file__), "..", "instances.json")
+
+
+def _load():
+    try:
+        with open(_PATH) as f:
+            return json.load(f)
+    except (FileNotFoundError, json.JSONDecodeError):
+        return {}
+
+
+def _save(data):
+    with open(_PATH, "w") as f:
+        json.dump(data, f, indent=2)
+
+
+def add(instance_uid, svc_id, display_name):
+    with _LOCK:
+        data = _load()
+        data[instance_uid] = {
+            "svcId": svc_id,
+            "displayName": display_name,
+            "instanceUid": instance_uid,
+        }
+        _save(data)
+
+
+def remove(instance_uid):
+    with _LOCK:
+        data = _load()
+        data.pop(instance_uid, None)
+        _save(data)
+
+
+def list_all():
+    with _LOCK:
+        return list(_load().values())
diff --git a/site/routes/api_test.py b/site/routes/api_test.py
index fe08158..9abbd4f 100644
--- a/site/routes/api_test.py
+++ b/site/routes/api_test.py
@@ -3,6 +3,8 @@ from flask import Blueprint, current_app, jsonify, request
 from api.http_client import HttpClient
 from operations.get_services import get_services, get_service_detail
 from operations.get_instances import get_instances
+from operations.tracker import add as tracker_add, list_all as tracker_list
+from operations.tracker import remove as tracker_remove
 
 bp = Blueprint("api_test", __name__)
 
@@ -38,8 +40,13 @@ def api_operations(svc_id):
     try:
         detail = get_service_detail(_client(), svc_id)
         ops = detail.get("operations", [])
+        # только отслеживаемые инстансы этого сервиса
+        tracked = tracker_list()
+        tracked_uids = {t["instanceUid"] for t in tracked if t["svcId"] == svc_id}
         instances = get_instances(_client())
-        svc_instances = [i for i in instances if i.get("serviceId") == svc_id and i.get("explainedStatus") not in ("deleted", "not created")]
+        svc_instances = [i for i in instances
+            if i.get("instanceUid") in tracked_uids
+            and i.get("explainedStatus") not in ("deleted", "not created")]
         return jsonify({
             "svc": detail.get("svc", ""),
             "operations": [{"svcOperationId": o["svcOperationId"], "operation": o["operation"]} for o in ops],
@@ -115,6 +122,7 @@ def api_test():
                             result["status"] = "OK"
                             result["instanceUid"] = instance_uid
                             result["duration"] = round(time.time() - t0, 1)
+                            tracker_add(instance_uid, svc_id, display_name)
                             return jsonify(result)
                 time.sleep(5)
             result["status"] = "TIMEOUT"
@@ -136,6 +144,8 @@ def api_test():
                             result["status"] = "OK"
                             result["instanceUid"] = instance_uid
                             result["duration"] = round(time.time() - t0, 1)
+                            if op_name == "delete":
+                                tracker_remove(instance_uid)
                             return jsonify(result)
                 time.sleep(5)
             result["status"] = "TIMEOUT"