I am currently developing a website which helps to post directly on social networks. But I couldn't post to a Google plus profile. I searched the whole Google+ API developer document, but I couldn't find out any api to post in a Google plus profile.
I even tried Google Domains API for posting, but that was too domain restricted. I know some types of Google plus APIs are only available for their partners. I can post to a google plus page, since I have access to that APIs. But how to post in a profile. Is there any other API which is restricted to public for profile posting. I think many applications such as Buffer and Hootsuite can post to Google plus profile.
The Google+ API is currently read only. Which means you cant post to it google+ programmaticly. There is probably a private API that Google allows some sites to use. This is not public and i have never seen anyone get access to it.
The only option you have is the Google+ sharing button here which is not a believe what you are looking for.