diff --git a/etna/alerts/migrations/0002_alert_uid.py b/etna/alerts/migrations/0002_alert_uid.py
new file mode 100644
index 000000000..6107b5d72
--- /dev/null
+++ b/etna/alerts/migrations/0002_alert_uid.py
@@ -0,0 +1,19 @@
+# Generated by Django 5.0.7 on 2024-07-25 09:53
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("alerts", "0001_initial"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="alert",
+            name="uid",
+            field=models.BigIntegerField(blank=True, default=0, editable=False),
+            preserve_default=False,
+        ),
+    ]
diff --git a/etna/alerts/models.py b/etna/alerts/models.py
index f49a74b90..e83c015e5 100644
--- a/etna/alerts/models.py
+++ b/etna/alerts/models.py
@@ -1,3 +1,5 @@
+import time
+
 from django.conf import settings
 from django.db import models
 
@@ -57,9 +59,15 @@ class Alert(models.Model):
         FieldPanel("alert_level"),
     ]
 
+    uid = models.BigIntegerField(null=False, blank=True, editable=False)
+
     def __str__(self):
         return self.title
 
+    def save(self, *args, **kwargs):
+        self.uid = round(time.time() * 1000)
+        super().save(*args, **kwargs)
+
 
 class AlertMixin(models.Model):
     """Alert mixin.
diff --git a/etna/alerts/serializers.py b/etna/alerts/serializers.py
index 5c680297a..e4c744776 100644
--- a/etna/alerts/serializers.py
+++ b/etna/alerts/serializers.py
@@ -5,8 +5,13 @@
 
 class AlertSerializer(serializers.Serializer):
     def to_representation(self, instance):
-        return {
-            "title": instance.title,
-            "message": expand_db_html(instance.message),
-            "alert_level": instance.alert_level,
-        }
+        if instance.active:
+            return {
+                "title": instance.title,
+                "message": expand_db_html(instance.message),
+                "alert_level": instance.alert_level,
+                "cascade": instance.cascade,
+                "uid": instance.uid,
+            }
+        else:
+            return None
diff --git a/etna/api/tests/expected_results/author.json b/etna/api/tests/expected_results/author.json
index 106a8b631..7db24d0df 100644
--- a/etna/api/tests/expected_results/author.json
+++ b/etna/api/tests/expected_results/author.json
@@ -27,7 +27,9 @@
     "global_alert": {
         "title": "BETA",
         "message": "<p>Message</p>",
-        "alert_level": "high"
+        "alert_level": "high",
+        "cascade": true,
+        "uid": ALERT_UID
     },
     "type_label": "Author",
     "teaser_text": "Teaser text",
diff --git a/etna/api/tests/expected_results/authors.json b/etna/api/tests/expected_results/authors.json
index c8eedef84..cd11cc93b 100644
--- a/etna/api/tests/expected_results/authors.json
+++ b/etna/api/tests/expected_results/authors.json
@@ -27,7 +27,9 @@
     "global_alert": {
         "title": "BETA",
         "message": "<p>Message</p>",
-        "alert_level": "high"
+        "alert_level": "high",
+        "cascade": true,
+        "uid": ALERT_UID
     },
     "type_label": "Author index",
     "teaser_text": "Teaser text",
diff --git a/etna/api/tests/test_pages.py b/etna/api/tests/test_pages.py
index 038879362..4332a15b7 100644
--- a/etna/api/tests/test_pages.py
+++ b/etna/api/tests/test_pages.py
@@ -335,6 +335,7 @@ def replace_placeholders(self, data: str):
             "HOME_PAGE_ID": str(self.root_page.id),
             "ARTICLE_INDEX_ID": str(self.article_index.id),
             "ARTICLE_ID": str(self.article.id),
+            "ALERT_UID": str(self.alert.uid),
             "FOCUSED_ID": str(self.focused_article.id),
             "ARTS_ID": str(self.arts.id),
             "EARLY_MODERN_ID": str(self.early_modern.id),