Everyone's been waiting for the Google+ API, and an API that's limited to public data is now out according to the Google+ Platform blog.
The post notes that developers need to register their app before they can make requests for public data.
LAUNCH has asked Google when the API will include all data and what kinds of applications it will not allow.
Right now, these are the guidelines Google has given: "Included in our policies are three simple guidelines that we aspire to in our own products, and that we’d like all applications built on the Google+ platform to follow also: put the user first, be transparent, and respect user data. The goal behind these guidelines, as with all of the features and fine print, is to work together to build products that our users will love."