diff --git a/griptape/drivers/event_listener/griptape_cloud_event_listener_driver.py b/griptape/drivers/event_listener/griptape_cloud_event_listener_driver.py
index 51b62aeac..7f52b3519 100644
--- a/griptape/drivers/event_listener/griptape_cloud_event_listener_driver.py
+++ b/griptape/drivers/event_listener/griptape_cloud_event_listener_driver.py
@@ -12,7 +12,18 @@
 
 @define
 class GriptapeCloudEventListenerDriver(BaseEventListenerDriver):
-    base_url: str = field(default="https://cloud.griptape.ai", kw_only=True)
+    """Driver for publishing events to Griptape Cloud.
+
+    Attributes:
+        base_url: The base URL of Griptape Cloud. Defaults to the GT_CLOUD_BASE_URL environment variable.
+        api_key: The API key to authenticate with Griptape Cloud.
+        headers: The headers to use when making requests to Griptape Cloud. Defaults to include the Authorization header.
+        run_id: The ID of the Structure Run to publish events to. Defaults to the GT_CLOUD_RUN_ID environment variable.
+    """
+
+    base_url: str = field(
+        default=Factory(lambda: os.getenv("GT_CLOUD_BASE_URL", "https://cloud.griptape.ai")), kw_only=True
+    )
     api_key: str = field(kw_only=True)
     headers: dict = field(
         default=Factory(lambda self: {"Authorization": f"Bearer {self.api_key}"}, takes_self=True), kw_only=True
diff --git a/tests/unit/drivers/event_listener/test_griptape_cloud_event_listener_driver.py b/tests/unit/drivers/event_listener/test_griptape_cloud_event_listener_driver.py
index c459fc8a2..bbffa1059 100644
--- a/tests/unit/drivers/event_listener/test_griptape_cloud_event_listener_driver.py
+++ b/tests/unit/drivers/event_listener/test_griptape_cloud_event_listener_driver.py
@@ -1,8 +1,11 @@
+import os
 from unittest.mock import Mock
-from pytest import fixture
+
 import pytest
-from tests.mocks.mock_event import MockEvent
+from pytest import fixture
+
 from griptape.drivers.event_listener.griptape_cloud_event_listener_driver import GriptapeCloudEventListenerDriver
+from tests.mocks.mock_event import MockEvent
 
 
 class TestGriptapeCloudEventListenerDriver:
@@ -17,17 +20,21 @@ def mock_post(self, mocker):
 
     @fixture()
     def driver(self):
-        return GriptapeCloudEventListenerDriver(api_key="foo bar", run_id="baz")
+        os.environ["GT_CLOUD_BASE_URL"] = "https://cloud123.griptape.ai"
+
+        return GriptapeCloudEventListenerDriver(api_key="foo bar", run_id="bar baz")
 
     def test_init(self, driver):
         assert driver
+        assert driver.api_key == "foo bar"
+        assert driver.run_id == "bar baz"
 
     def test_try_publish_event(self, mock_post, driver):
         event = MockEvent()
         driver.try_publish_event(event=event)
 
         mock_post.assert_called_once_with(
-            url=f"https://cloud.griptape.ai/api/structure-runs/{driver.run_id}/events",
+            url="https://cloud123.griptape.ai/api/structure-runs/bar baz/events",
             json=event.to_dict(),
             headers={"Authorization": "Bearer foo bar"},
         )