"fix: 修复MCP工具调用参数类型错误问题，无参调用时提供默认空字典"

main/xiaozhi-server/core/handle/intentHandler.py

@@ -84,9 +84,11 @@ async def process_intent_result(conn, intent_result, original_text):
                 if not funcItem:
                     conn.func_handler.function_registry.register_function("play_music")
 
-            function_args = None
+            function_args = {}
             if "arguments" in intent_data["function_call"]:
                 function_args = intent_data["function_call"]["arguments"]
+                if function_args is None:
+                    function_args = {}
             # 确保参数是字符串格式的JSON
             if isinstance(function_args, dict):
                 function_args = json.dumps(function_args)

main/xiaozhi-server/core/providers/intent/intent_llm/intent_llm.py

@@ -76,6 +76,14 @@ class IntentProvider(IntentProviderBase):
             '返回: {"function_call": {"name": "get_battery_level", "arguments": {"response_success": "当前电池电量为{value}%", "response_failure": "无法获取Battery的当前电量百分比"}}}\n'
             "```\n"
             "```\n"
+            "用户: 当前屏幕亮度是多少？\n"
+            '返回: {"function_call": {"name": "self_screen_get_brightness"}}\n'
+            "```\n"
+            "```\n"
+            "用户: 设置屏幕亮度为50%\n"
+            '返回: {"function_call": {"name": "self_screen_set_brightness", "arguments": {"brightness": 50}}}\n'
+            "```\n"
+            "```\n"
             "用户: 我想结束对话\n"
             '返回: {"function_call": {"name": "handle_exit_intent", "arguments": {"say_goodbye": "goodbye"}}}\n'
             "```\n"