diff --git a/openapi/openapiv2.json b/openapi/openapiv2.json
index da89fac56..40bd92a3c 100644
--- a/openapi/openapiv2.json
+++ b/openapi/openapiv2.json
@@ -16739,6 +16739,10 @@
         "workflowUpdateCallbacks": {
           "type": "boolean",
           "title": "True if the namespace supports attaching callbacks on workflow updates"
+        },
+        "pollerAutoscalingAutoEnroll": {
+          "type": "boolean",
+          "description": "When true, workers should use poller autoscaling by default unless explicitly configured otherwise."
         }
       },
       "description": "Namespace capability details. Should contain what features are enabled in a namespace."
diff --git a/openapi/openapiv3.yaml b/openapi/openapiv3.yaml
index 36b02e47c..378cc5d80 100644
--- a/openapi/openapiv3.yaml
+++ b/openapi/openapiv3.yaml
@@ -13141,6 +13141,9 @@ components:
         workflowUpdateCallbacks:
           type: boolean
           description: True if the namespace supports attaching callbacks on workflow updates
+        pollerAutoscalingAutoEnroll:
+          type: boolean
+          description: When true, workers should use poller autoscaling by default unless explicitly configured otherwise.
       description: Namespace capability details. Should contain what features are enabled in a namespace.
     NamespaceInfo_Limits:
       type: object
diff --git a/temporal/api/namespace/v1/message.proto b/temporal/api/namespace/v1/message.proto
index 4b722147d..a8b49dc8c 100644
--- a/temporal/api/namespace/v1/message.proto
+++ b/temporal/api/namespace/v1/message.proto
@@ -56,6 +56,8 @@ message NamespaceInfo {
         bool standalone_nexus_operation = 11;
         // True if the namespace supports attaching callbacks on workflow updates
         bool workflow_update_callbacks = 12;
+        // When true, workers should use poller autoscaling by default unless explicitly configured otherwise.
+        bool poller_autoscaling_auto_enroll = 13;
     }
 
     // Namespace configured limits