Access & modify classic Google Sites content programmatically.

A rebuilt version of Sites was launched on November 22, 2016. The Sites API cannot access or modify Sites made with this version, but can still access classic Sites .
Create new sites or copy existing sites
Retrieve, create, modify, and delete pages, attachments, and other content.
Upload and download attachments and files.
Modify sharing permissions across a site
Review the revision history across the site.