diff --git a/src/frostfs_testlib/storage/constants.py b/src/frostfs_testlib/storage/constants.py
index 84f8d24..2cffd3a 100644
--- a/src/frostfs_testlib/storage/constants.py
+++ b/src/frostfs_testlib/storage/constants.py
@@ -12,6 +12,7 @@ class ConfigAttributes:
     REMOTE_WALLET_CONFIG = "remote_wallet_config_path"
     ENDPOINT_DATA_0 = "endpoint_data0"
     ENDPOINT_DATA_1 = "endpoint_data1"
+    ENDPOINT_DATA_0_NS = "endpoint_data0_namespace"
     ENDPOINT_INTERNAL = "endpoint_internal0"
     ENDPOINT_PROMETHEUS = "endpoint_prometheus"
     CONTROL_ENDPOINT = "control_endpoint"
diff --git a/src/frostfs_testlib/storage/dataclasses/frostfs_services.py b/src/frostfs_testlib/storage/dataclasses/frostfs_services.py
index 16efd72..1420356 100644
--- a/src/frostfs_testlib/storage/dataclasses/frostfs_services.py
+++ b/src/frostfs_testlib/storage/dataclasses/frostfs_services.py
@@ -45,6 +45,9 @@ class S3Gate(NodeBase):
             self._get_attribute(ConfigAttributes.ENDPOINT_DATA_1),
         ]
 
+    def get_ns_endpoint(self, ns_name: str) -> str:
+        return self._get_attribute(ConfigAttributes.ENDPOINT_DATA_0_NS).format(namespace=ns_name)
+
     def service_healthcheck(self) -> bool:
         health_metric = "frostfs_s3_gw_state_health"
         output = self.host.get_shell().exec(f"curl -s localhost:8086 | grep {health_metric} | sed 1,2d").stdout