New API Version Available
If you added Foursquare after 11/18/21, you automatically have access to the new version (v3) of the API. Please refer to our Places API documentation to ensure you're viewing the correct information to successfully implement Foursquare technology!
For those who are already using the current (v2) version of the API, you may continue to do so or elect to upgrade now. Please contact Foursquare Developer Support for more information.
Allows the acting user to like or unlike a checkin.