diff --git a/examples/agents/rag_as_attachments.py b/examples/agents/rag_as_attachments.py
index 571340f5..0c5bb245 100644
--- a/examples/agents/rag_as_attachments.py
+++ b/examples/agents/rag_as_attachments.py
@@ -58,7 +58,6 @@ def run_main(host: str, port: int, disable_safety: bool = False):
         },
         toolgroups=["builtin::rag"],
         tool_choice="auto",
-        tool_prompt_format="json",
         input_shields=available_shields if available_shields else [],
         output_shields=available_shields if available_shields else [],
         enable_session_persistence=False,
diff --git a/examples/agents/rag_with_vector_db.py b/examples/agents/rag_with_vector_db.py
index d9a289f2..f1ebf528 100644
--- a/examples/agents/rag_with_vector_db.py
+++ b/examples/agents/rag_with_vector_db.py
@@ -88,7 +88,6 @@ def run_main(host: str, port: int, disable_safety: bool = False):
             }
         ],
         tool_choice="auto",
-        tool_prompt_format="json",
         input_shields=available_shields if available_shields else [],
         output_shields=available_shields if available_shields else [],
         enable_session_persistence=False,