diff --git a/src/app/endpoints/a2a.py b/src/app/endpoints/a2a.py
index 8b14e5a95..cef33ed47 100644
--- a/src/app/endpoints/a2a.py
+++ b/src/app/endpoints/a2a.py
@@ -372,7 +372,12 @@ async def _process_task_streaming(  # pylint: disable=too-many-locals
             )
             responses_params = compaction.params
 
-            agent = build_agent(client, responses_params, configuration)
+            agent = build_agent(
+                client,
+                responses_params,
+                configuration,
+                shields=query_request.shield_ids,
+            )
         except (AgentRunError, APIStatusError, APIConnectionError, RuntimeError) as e:
             error_response = map_agent_inference_error(e, query_request.model or "")
             logger.error("Error preparing A2A agent: %s", str(e), exc_info=True)