don't use tools when response_format is included (they're mutually exclusive)

Author: mythz

examples/templates/capitals-response_format.json

@@ -0,0 +1,49 @@
+{
+    "model": "moonshotai/kimi-k2-instruct",
+    "messages": [
+        {
+            "role": "user",
+            "content": [
+                {
+                    "type": "text",
+                    "text": "Return the list of capital cities for the following countries: France, Germany, Italy, Spain, Portugal, Japan, Australia."
+                }
+            ]
+        }
+    ],
+    "response_format": {
+        "type": "json_schema",
+        "json_schema": {
+            "name": "country_capitals",
+            "strict": true,
+            "schema": {
+                "type": "object",
+                "properties": {
+                    "capitals": {
+                        "type": "array",
+                        "items": {
+                            "type": "object",
+                            "properties": {
+                                "country": {
+                                    "type": "string"
+                                },
+                                "capital": {
+                                    "type": "string"
+                                }
+                            },
+                            "required": [
+                                "country",
+                                "capital"
+                            ],
+                            "additionalProperties": false
+                        }
+                    }
+                },
+                "required": [
+                    "capitals"
+                ],
+                "additionalProperties": false
+            }
+        }
+    }
+}

llms/main.py

@@ -1984,7 +1984,9 @@ async def g_chat_completion(chat, context=None):
     raise e
 
 
-async def cli_chat(chat, tools=None, image=None, audio=None, file=None, args=None, raw=False, nohistory=False, nostore=False):
+async def cli_chat(
+    chat, tools=None, image=None, audio=None, file=None, args=None, raw=False, nohistory=False, nostore=False
+):
     if g_default_model:
         chat["model"] = g_default_model
 
@@ -3075,6 +3077,9 @@ def exit(self, exit_code: int = 0):
     def create_chat_with_tools(self, chat: Dict[str, Any], use_tools: str = "all") -> Dict[str, Any]:
         # Inject global tools if present
         current_chat = chat.copy()
+        # Don't inject tools when response_format is set (structured output)
+        if "response_format" in current_chat:
+            return current_chat
         tools = current_chat.get("tools")
         if tools is None:
             tools = current_chat["tools"] = []