🐛 Bug: Fix the bug when the date plugin does not require parameters.

models.py

@@ -1,4 +1,4 @@
-from pydantic import BaseModel
+from pydantic import BaseModel, Field
 from typing import List, Dict, Optional, Union
 
 class FunctionParameter(BaseModel):
@@ -10,7 +10,7 @@ class FunctionParameter(BaseModel):
 class Function(BaseModel):
     name: str
     description: str
-    parameters: FunctionParameter
+    parameters: Optional[FunctionParameter] = Field(default=None, exclude=None)
 
 # 定义 Tool 模型
 class Tool(BaseModel):

request.py

@@ -255,13 +255,14 @@ async def gpt2claude_tools_json(json_dict):
     for old_key, new_key in keys_to_change.items():
         if old_key in json_dict:
             if new_key:
+                if json_dict[old_key] == None:
+                    json_dict[old_key] = {
+                        "type": "object",
+                        "properties": {}
+                    }
                 json_dict[new_key] = json_dict.pop(old_key)
             else:
                 json_dict.pop(old_key)
-    # if "tools" in json_dict.keys():
-    #     json_dict["tool_choice"] = {
-    #         "type": "auto"
-    #     }
     return json_dict
 
 async def get_claude_payload(request, engine, provider):