How can I retrieve the task history of a file based project?

Hello,

Our app takes in Studio projects that have been created manually and needs to find out which tasks have already been run on the project, as well as any task-related information.

I haven't found a way to retrieve these tasks through the Project Automation API. I could achieve this by reading the information in the *.sdlproj file directly, but first I would like to confirm if this is indeed not possible with the API.

Thanks and kind regards,

Trinidad