Are you referring to the "JavaScript API" or the "Data APIs?" Because the Data APIs are pretty plainly based on the Atom Publishing protocol, with only a few e

Are you referring to the "JavaScript API" or the "Data APIs?" Because the Data APIs are pretty plainly based on the Atom Publishing protocol, with only a few extensions. Yes, many of Google's APIs are now based on Atompub, but that isn't something that Google invented from whole cloth.