linode · yec-akamai · Apr 9, 2026 · Mar 30, 2026 · Apr 8, 2026 · Apr 9, 2026
@@ -1,11 +1,13 @@
-from typing import Any, Optional
+from typing import Any, Optional, Union
 
 from linode_api4 import PaginatedList
 from linode_api4.errors import UnexpectedResponseError
 from linode_api4.groups import Group
 from linode_api4.objects import (
     AlertChannel,
     AlertDefinition,
+    AlertDefinitionEntity,
+    AlertScope,
     MonitorDashboard,
     MonitorMetricsDefinition,
     MonitorService,
@@ -221,6 +223,8 @@ def create_alert_definition(
         trigger_conditions: dict,
         entity_ids: Optional[list[str]] = None,
         description: Optional[str] = None,
+        scope: Optional[Union[AlertScope, str]] = None,
+        regions: Optional[list[str]] = None,
     ) -> AlertDefinition:
         """
         Create a new alert definition for a given service type.
@@ -252,6 +256,10 @@ def create_alert_definition(
         :type entity_ids: Optional[list[str]]
         :param description: (Optional) Longer description for the alert definition.
         :type description: Optional[str]
+        :param scope: (Optional) Alert scope (for example: `account`, `entity`, or `region`). Defaults to `entity`.
+        :type scope: Optional[Union[AlertScope, str]]
+        :param regions: (Optional) Regions to monitor.
+        :type regions: Optional[list[str]]
 
         :returns: The newly created :class:`AlertDefinition`.
         :rtype: AlertDefinition
@@ -267,10 +275,15 @@ def create_alert_definition(
             "rule_criteria": rule_criteria,
             "trigger_conditions": trigger_conditions,
         }
-        if description is not None:
-            params["description"] = description
+
         if entity_ids is not None:
             params["entity_ids"] = entity_ids
+        if description is not None:
+            params["description"] = description
+        if scope is not None:
+            params["scope"] = scope
+        if regions is not None:
+            params["regions"] = regions
 
         # API will validate service_type and return an error if missing
         result = self.client.post(
@@ -284,3 +297,38 @@ def create_alert_definition(
             )
 
         return AlertDefinition(self.client, result["id"], service_type, result)
+
+    def alert_definition_entities(
+        self,
+        service_type: str,
+        id: int,
+        *filters,
+    ) -> PaginatedList:
+        """
+        List entities associated with a specific alert definition.
+
+        This endpoint supports pagination fields (`page`, `page_size`) in the API.
+
+        .. note:: This endpoint is in beta and requires using the v4beta base URL.
+
+        API Documentation: TODO
+
+        :param service_type: Service type for the alert definition (e.g. `dbaas`).
+        :type service_type: str
+        :param id: Alert definition identifier.
+        :type id: int
+        :param filters: Optional filter expressions to apply to the collection.
+                        See :doc:`Filtering Collections</linode_api4/objects/filtering>`.
+
+        :returns: A paginated list of entities associated with the alert definition.
+        :rtype: PaginatedList[AlertDefinitionEntity]
+        """
+
+        endpoint = (
+            f"/monitor/services/{service_type}/alert-definitions/{id}/entities"
+        )
+        return self.client._get_and_filter(
+            AlertDefinitionEntity,
+            *filters,
+            endpoint=endpoint,
+        )
@@ -7,11 +7,13 @@
 
 __all__ = [
     "AggregateFunction",
-    "Alert",
     "AlertChannel",
     "AlertDefinition",
+    "AlertDefinitionChannel",
+    "AlertDefinitionEntity",
+    "AlertEntities",
+    "AlertScope",
     "AlertType",
-    "Alerts",
     "MonitorDashboard",
     "MonitorMetricsDefinition",
     "MonitorService",
@@ -341,15 +343,15 @@ class RuleCriteria(JSONObject):
 
 
 @dataclass
-class Alert(JSONObject):
+class AlertDefinitionChannel(JSONObject):
     """
-    Represents an alert definition reference within an AlertChannel.
+    Represents the notification channel set up for use with an alert.
 
     Fields:
-      - id: int - Unique identifier of the alert definition.
-      - label: str - Human-readable name for the alert definition.
-      - type: str - Type of the alert (e.g., 'alerts-definitions').
-      - url: str - API URL for the alert definition.
+      - id: int - Unique identifier for this notification channel.
+      - label: str - Human-readable name for the alert channel.
+      - type: str - Type of notification used with the channel. For a user alert definition, only `email` is supported.
+      - url: str - URL for the channel that ends in the channel's id.
     """
 
     id: int = 0
@@ -358,18 +360,6 @@ class Alert(JSONObject):
     url: str = ""
 
 
-@dataclass
-class Alerts(JSONObject):
-    """
-    Represents a collection of alert definitions within an AlertChannel.
-
-    Fields:
-      - items: List[Alert] - List of alert definitions.
-    """
-
-    items: List[Alert] = field(default_factory=list)
-
-
 class AlertType(StrEnum):
     """
     Enumeration of alert origin types used by alert definitions.
@@ -387,6 +377,43 @@ class AlertType(StrEnum):
     user = "user"
 
 
+class AlertScope(StrEnum):
+    """
+    Scope values supported for alert definitions.
+    """
+
+    entity = "entity"
+    region = "region"
+    account = "account"
+
+
+@dataclass
+class AlertEntities(JSONObject):
+    """
+    Represents entity metadata for an alert definition.
+
+    For entity scoped alerts, `entities` envelope contains the URL to list entities,
+    a count, and a has_more_resources flag.
+    For region/account scoped alerts, the `entities` are returned as an empty object.
+    """
+
+    url: str = ""
+    count: int = 0
+    has_more_resources: bool = False
+
+
+@dataclass
+class AlertDefinitionEntity(JSONObject):
+    """
+    Represents an entity associated with an alert definition.
+    """
+
+    id: str = ""
+    label: str = ""
+    url: str = ""
+    _type: str = field(default="", metadata={"json_key": "type"})
+
+
 class AlertDefinition(DerivedBase):
     """
     Represents an alert definition for a monitor service.
@@ -406,19 +433,22 @@ class AlertDefinition(DerivedBase):
         "severity": Property(mutable=True),
         "type": Property(mutable=True),
         "status": Property(mutable=True),
-        "has_more_resources": Property(mutable=True),
+        "has_more_resources": Property(),  # Deprecated; use entities.has_more_resources.
         "rule_criteria": Property(mutable=True, json_object=RuleCriteria),
         "trigger_conditions": Property(
             mutable=True, json_object=TriggerConditions
         ),
-        "alert_channels": Property(mutable=True, json_object=Alerts),
+        "alert_channels": Property(json_object=AlertDefinitionChannel),
         "created": Property(is_datetime=True),
         "updated": Property(is_datetime=True),
         "updated_by": Property(),
         "created_by": Property(),
         "entity_ids": Property(mutable=True),
         "description": Property(mutable=True),
         "service_class": Property(alias_of="class"),
+        "scope": Property(AlertScope),
+        "regions": Property(mutable=True),
+        "entities": Property(json_object=AlertEntities),
     }
 
 

@@ -7,13 +7,26 @@
       "severity": 1,
       "type": "user",
       "description": "A test alert for dbaas service",
+      "scope": "entity",
+      "regions": [],
       "entity_ids": ["13217"],
-      "alert_channels": [],
+      "entities": {
+        "url": "/monitor/services/dbaas/alert-definitions/12345/entities",
+        "count": 1,
+        "has_more_resources": false
+      },
+      "alert_channels": [
+        {
+          "id": 10000,
+          "label": "Read-Write Channel",
+          "type": "email",
+          "url": "/monitor/alert-channels/10000"
+        }
+      ],
       "has_more_resources": false,
       "rule_criteria": null,
       "trigger_conditions": null,
       "class": "alert",
-      "notification_groups": [],
       "status": "active",
       "created": "2024-01-01T00:00:00",
       "updated": "2024-01-01T00:00:00",

@@ -7,10 +7,24 @@
       "severity": 1,
       "type": "user",
       "description": "A test alert for dbaas service",
+      "scope": "entity",
+      "regions": [],
       "entity_ids": [
         "13217"
       ],
-      "alert_channels": [],
+      "entities": {
+        "url": "/monitor/services/dbaas/alert-definitions/12345/entities",
+        "count": 1,
+        "has_more_resources": false
+      },
+      "alert_channels": [
+        {
+          "id": 10000,
+          "label": "Read-Write Channel",
+          "type": "email",
+          "url": "/monitor/alert-channels/10000"
+        }
+      ],
       "has_more_resources": false,
       "rule_criteria": {
         "rules": [
@@ -39,7 +53,6 @@
         "trigger_occurrences": 3
       },
       "class": "alert",
-      "notification_groups": [],
       "status": "active",
       "created": "2024-01-01T00:00:00",
       "updated": "2024-01-01T00:00:00",

@@ -5,10 +5,24 @@
   "severity": 1,
   "type": "user",
   "description": "A test alert for dbaas service",
+  "scope": "entity",
+  "regions": [],
   "entity_ids": [
     "13217"
   ],
-  "alert_channels": [],
+  "entities": {
+    "url": "/monitor/services/dbaas/alert-definitions/12345/entities",
+    "count": 1,
+    "has_more_resources": false
+  },
+  "alert_channels": [
+    {
+      "id": 10000,
+      "label": "Read-Write Channel",
+      "type": "email",
+      "url": "/monitor/alert-channels/10000"
+    }
+  ],
   "has_more_resources": false,
   "rule_criteria": {
     "rules": [

@@ -0,0 +1,25 @@
+{
+  "data": [
+    {
+      "id": "1",
+      "label": "mydatabase-1",
+      "url": "/v4/databases/mysql/instances/1",
+      "type": "dbaas"
+    },
+    {
+      "id": "2",
+      "label": "mydatabase-2",
+      "url": "/v4/databases/mysql/instances/2",
+      "type": "dbaas"
+    },
+    {
+      "id": "3",
+      "label": "mydatabase-3",
+      "url": "/v4/databases/mysql/instances/3",
+      "type": "dbaas"
+    }
+  ],
+  "page": 1,
+  "pages": 1,
+  "results": 3
+}
@@ -7,9 +7,10 @@
 
 import pytest
 
-from linode_api4 import LinodeClient
+from linode_api4 import LinodeClient, PaginatedList
 from linode_api4.objects import (
     AlertDefinition,
+    AlertDefinitionEntity,
     ApiError,
     MonitorDashboard,
     MonitorMetricsDefinition,
@@ -256,12 +257,14 @@ def wait_for_alert_ready(alert_id, service_type: str):
 
         assert created.id
         assert getattr(created, "label", None) == label
+        assert getattr(created, "entities", None) is not None
 
         created = wait_for_alert_ready(created.id, service_type)
 
         updated = client.load(AlertDefinition, created.id, service_type)
         updated.label = f"{label}-updated"
         updated.save()
+        assert getattr(updated, "entities", None) is not None
 
         updated = wait_for_alert_ready(updated.id, service_type)
 
@@ -275,3 +278,36 @@ def wait_for_alert_ready(alert_id, service_type: str):
                 AlertDefinition, created.id, service_type
             )
             delete_alert.delete()
+
+
+def test_alert_definition_entities(test_linode_client):
+    """Test listing entities associated with an alert definition.
+
+    This test first retrieves alert definitions for a service type, then lists entities for the first alert definition.
+    It asserts that the returned entities have expected fields.
+    """
+    client = test_linode_client
+    service_type = "dbaas"
+
+    alert_definitions = client.monitor.alert_definitions(
+        service_type=service_type
+    )
+
+    if len(alert_definitions) == 0:
+        pytest.fail("No alert definitions available for dbaas service type")
+
+    assert getattr(alert_definitions[0], "entities", None) is not None
+
+    alert_def = alert_definitions[0]
+    entities = client.monitor.alert_definition_entities(
+        service_type, alert_def.id
+    )
+
+    assert isinstance(entities, PaginatedList)
+    if len(entities) > 0:
+        entity = entities[0]
+        assert isinstance(entity, AlertDefinitionEntity)
+        assert entity.id
+        assert entity.label
+        assert entity.url
+        assert entity._type == service_type