Is there already a Google+ API? [closed]

Solution 1:

https://services.google.com/fb/forms/plusdevelopers/ This is the link to sign up for Google+ API access.

Solution 2:

The official Google+ API can be found at: http://developers.google.com/+/api/

Solution 3:

There is an unofficial API, PHP.GooglePlusAPI, that you can use this to fetch public data. It's something to play around with while we're waiting for the full official API from Google:

Update:

I've just added support for feed posts as well. You can use this library in your server-side code to read a public profile, post, and relationship data, cache it in a MySQL database, and serve the data to a front-end as a JSON or JSONP service.

Solution 4:

Google just announced the developer's page

https://developers.google.com/+/