diff --git a/__pycache__/mcp_server.cpython-310.pyc b/__pycache__/mcp_server.cpython-310.pyc
new file mode 100644
index 00000000..deadef6f
Binary files /dev/null and b/__pycache__/mcp_server.cpython-310.pyc differ
diff --git a/mcp_server.py b/mcp_server.py
index 54e67c73..5dc2da2e 100644
--- a/mcp_server.py
+++ b/mcp_server.py
@@ -60,8 +60,7 @@ class ToolDefinition(BaseModel):
     """工具定义"""
     name: str
     description: str
-    parameters: Dict[str, Dict[str, Any]]
-    required: List[str] = []
+    parameters: Dict[str, Any]  # 支持完整的 JSON Schema 格式
 
 class ToolCallRequest(BaseModel):
     """工具调用请求"""