diff --git a/src/osw/utils/workflow.py b/src/osw/utils/workflow.py
index b628599..5a8c3f4 100644
--- a/src/osw/utils/workflow.py
+++ b/src/osw/utils/workflow.py
@@ -24,9 +24,15 @@
 import osw.model.entity as model
 from osw.auth import CredentialManager
 from osw.core import OSW
+from osw.utils._httpx_gateway import _install as _install_gateway_hook
 from osw.utils.wiki import get_full_title
 from osw.wtsite import WtSite
 
+# Auto-patch httpx at import time if PREFECT_API_URL is an ApiGateway URL.
+# This ensures the transport is active for ALL Prefect API calls, not just
+# those inside deploy(). The patch is lazy — no MW login until first request.
+_install_gateway_hook()
+
 
 # ------------------------------ CONNECTION ---------------------
 class ConnectionSettings(BaseModel):