diff --git a/dynamiq/nodes/agents/base.py b/dynamiq/nodes/agents/base.py
index bc528aaa1..51151709f 100644
--- a/dynamiq/nodes/agents/base.py
+++ b/dynamiq/nodes/agents/base.py
@@ -541,10 +541,6 @@ def _prepare_metadata(self, input_data: AgentInputSchema) -> dict:
         """
         custom_metadata = input_data.metadata.copy()
 
-        # Add extra fields that were provided (model allows extra fields with ConfigDict extra="allow")
-        if input_data.model_extra:
-            custom_metadata.update(input_data.model_extra)
-
         # Clean up any leaked fields
         if "files" in custom_metadata:
             del custom_metadata["files"]