You can try it out here.
You can log on, and see a list of your sites, when each was created and modified.
Here's a screen shot.
How to set up a server
Download the folder.
Throw away everything but the shell folder. In the shell folder you can throw away source.opml.
Move the shell folder to your server.
Edit the config.json file with the credentials you got from WordPress.com.
Check out worknotes
I've been narrating my work in the worknotes.
These docs proved useful at different points in this project.
I am using this site for testing. https://scripting4.wordpress.com/