diff --git a/backend/magic_plan/tests/test_handler.py b/backend/magic_plan/tests/test_handler.py
index 366f3ded..b0365f5b 100644
--- a/backend/magic_plan/tests/test_handler.py
+++ b/backend/magic_plan/tests/test_handler.py
@@ -54,7 +54,7 @@ def test_handler_raises_on_missing_address(mock_plan: MagicMock) -> None:
 
 def test_handler_constructs_client_from_settings(mock_service: MagicMock) -> None:
     # Arrange
-    body = {"address": ADDRESS}
+    body = {"address": ADDRESS, "hubspot_deal_id": "deal-123"}
     with patch("backend.magic_plan.handler.get_settings", return_value=_make_settings(customer_id="cust-xyz", api_key="key-xyz")), \
          patch("backend.magic_plan.handler.MagicPlanClient") as MockClient, \
          patch("backend.magic_plan.handler.MagicPlanService", return_value=mock_service):
@@ -69,31 +69,37 @@ def test_handler_constructs_client_from_settings(mock_service: MagicMock) -> Non
 
 def test_handler_calls_service_run_with_address(mock_service: MagicMock) -> None:
     # Arrange
-    body = {"address": ADDRESS}
+    body = {"address": ADDRESS, "hubspot_deal_id": "deal-123"}
     with patch("backend.magic_plan.handler.get_settings", return_value=_make_settings()), \
          patch("backend.magic_plan.handler.MagicPlanClient"), \
          patch("backend.magic_plan.handler.MagicPlanService", return_value=mock_service):
         # Act
         _call_handler(body)
     # Assert
-    mock_service.run.assert_called_once_with(ADDRESS, None)
+    mock_service.run.assert_called_once()
+    request = mock_service.run.call_args.args[0]
+    assert request.address == ADDRESS
+    assert request.uprn is None
 
 
 def test_handler_passes_uprn_to_service(mock_service: MagicMock) -> None:
     # Arrange
-    body = {"address": ADDRESS, "uprn": "100023336956"}
+    body = {"address": ADDRESS, "uprn": "100023336956", "hubspot_deal_id": "deal-123"}
     with patch("backend.magic_plan.handler.get_settings", return_value=_make_settings()), \
          patch("backend.magic_plan.handler.MagicPlanClient"), \
          patch("backend.magic_plan.handler.MagicPlanService", return_value=mock_service):
         # Act
         _call_handler(body)
     # Assert
-    mock_service.run.assert_called_once_with(ADDRESS, "100023336956")
+    mock_service.run.assert_called_once()
+    request = mock_service.run.call_args.args[0]
+    assert request.address == ADDRESS
+    assert request.uprn == "100023336956"
 
 
 def test_handler_returns_plan_uid(mock_service: MagicMock) -> None:
     # Arrange
-    body = {"address": ADDRESS}
+    body = {"address": ADDRESS, "hubspot_deal_id": "deal-123"}
     with patch("backend.magic_plan.handler.get_settings", return_value=_make_settings()), \
          patch("backend.magic_plan.handler.MagicPlanClient"), \
          patch("backend.magic_plan.handler.MagicPlanService", return_value=mock_service):