diff --git a/run_agent.py b/run_agent.py
index afce4e923..3e0d9537f 100644
--- a/run_agent.py
+++ b/run_agent.py
@@ -2692,12 +2692,17 @@ class AIAgent:
                 }
                 response = self.client.chat.completions.create(**api_kwargs, timeout=30.0)
 
-            # Extract tool calls from the response, handling both API formats
+            # Extract tool calls from the response, handling all API formats
             tool_calls = []
             if self.api_mode == "codex_responses" and not _aux_available:
                 assistant_msg, _ = self._normalize_codex_response(response)
                 if assistant_msg and assistant_msg.tool_calls:
                     tool_calls = assistant_msg.tool_calls
+            elif self.api_mode == "anthropic_messages" and not _aux_available:
+                from agent.anthropic_adapter import normalize_anthropic_response as _nar_flush
+                _flush_msg, _ = _nar_flush(response)
+                if _flush_msg and _flush_msg.tool_calls:
+                    tool_calls = _flush_msg.tool_calls
             elif hasattr(response, "choices") and response.choices:
                 assistant_message = response.choices[0].message
                 if assistant_message.tool_calls: