diff --git a/workers/file_processing/structure_tool_task.py b/workers/file_processing/structure_tool_task.py
index 3fcf1999c4..9b954cadcb 100644
--- a/workers/file_processing/structure_tool_task.py
+++ b/workers/file_processing/structure_tool_task.py
@@ -435,7 +435,7 @@ def _execute_structure_tool_impl(params: dict) -> dict:
         json_structure = at_settings.get("json_structure")
         if isinstance(json_structure, dict):
             json_structure = json.dumps(json_structure)
-        agentic_params = {
+        agentic_params: dict[str, Any] = {
             "llm_adapter_instance_id": at_output["llm"],
             "lite_llm_adapter_instance_id": at_settings.get(
                 "lite_llm_adapter_instance_id", ""
@@ -452,6 +452,9 @@ def _execute_structure_tool_impl(params: dict) -> dict:
             "execution_id": execution_id,
             "PLATFORM_SERVICE_API_KEY": platform_service_api_key,
         }
+        group_key = at_settings.get("group_key", "")
+        if group_key:
+            agentic_params["group_key"] = group_key
         at_ctx = ExecutionContext(
             executor_name="agentic_table",
             operation="table_extract",