@ -51,7 +51,7 @@ class File(BaseModel):
# It should be set to `ToolFile.id` when `transfer_method` is `tool_file`.
related_id: Optional[str] = None
filename: Optional[str] = None
extension: Optional[str] = Field(default=None, description="File extension, should contains dot")
extension: Optional[str] = Field(default=None, description="File extension, should contain dot")
mime_type: Optional[str] = None
size: int = -1