diff --git a/api/services/workflow_service.py b/api/services/workflow_service.py
index 97168c462b..359fdb85fd 100644
--- a/api/services/workflow_service.py
+++ b/api/services/workflow_service.py
@@ -450,7 +450,8 @@ class WorkflowService:
             )
 
             if not default_provider:
-                raise ValueError("No default credential found")
+                # plugin does not require credentials, skip
+                return
 
             # Check credential policy compliance using the default credential ID
             from core.helper.credential_utils import check_credential_policy_compliance