diff --git a/scripts/llm_client.py b/scripts/llm_client.py
index 05a84af..93049ab 100644
--- a/scripts/llm_client.py
+++ b/scripts/llm_client.py
@@ -7,6 +7,7 @@ class LLMClient:
         def __init__(self, msg):
             self.content = msg.get('content', '')
             self.tool_calls = msg.get('tool_calls', None)
+            self.warning = None
 
     def __init__(self, base_url, model, api_key, timeout=600):
         self.base_url = base_url.rstrip('/')
@@ -35,6 +36,15 @@ class LLMClient:
             message = response['choices'][0]['message']
             return self.Message(message)
         except urllib.error.HTTPError as e:
+            if tools and e.code == 404:
+                try:
+                    body = json.loads(e.read().decode('utf-8'))
+                    if 'tool use' in body.get('error', {}).get('message', '').lower():
+                        result = self.chat(messages, tools=None)
+                        result.warning = "Tool calling not supported by this model. Running in chat-only mode."
+                        return result
+                except Exception:
+                    pass
             return self.Message({'content': f"HTTP Error: {e.code} {e.reason}", 'tool_calls': None})
         except Exception as e:
             return self.Message({'content': f"Error: {str(e)}", 'tool_calls': None})
diff --git a/tui/agent.py b/tui/agent.py
index 87646ae..4b6e918 100644
--- a/tui/agent.py
+++ b/tui/agent.py
@@ -59,6 +59,9 @@ def _agent_loop(app):
 
         app.log.pop()
 
+        if response.warning:
+            log(app, "system", f"  {response.warning}")
+
         if response.tool_calls:
             amsg = {
                 "role": "assistant",