Groups API - Documentation - Facebook for Developers
A collection of Graph API endpoints that let you read and create Facebook Group data on behalf of group members.
The Groups API is a collection of Graph API endpoints that let you read and
create Facebook Group data on behalf of group members. By installing your app
on a group, a group admin can grant your app access to group content, such as
posts, ... about group members who have chosen to share their public information
with ...