Changes to Google+ Hangouts API
At the Google Horizon event in September 2016, we previewed a new experience for Hangouts focused on meetings.
In order to streamline our efforts further, we will be retiring the Google+ Hangouts API that enables developers to build apps for the older version of Hangouts video calls. This API was originally intended to support social scenarios for consumer users as part of Google+, whereas Hangouts is now turning to focus on enterprise use cases.
Starting today, no new apps will be allowed, though existing apps will continue to work until April 25th, 2017. Users may continue to access existing apps through current entry points until that date.
We understand this will impact developers who have invested in our platform. We have carefully considered this change and believe that it allows us to give our users a more targeted Hangouts desktop video experience going forward.
We welcome your continued support.
Best regards, The Hangouts team