Example plugin for the Auth API.
You can find the source code for the backend of the shoutbox on Github as well.
The following is the most basic example for getting a token to validate with the Openplanet.dev backend API.
// Start the task to get the token from Openplanet
auto tokenTask = Auth::GetToken();
// Wait until the task has finished
while (!tokenTask.Finished()) {
yield();
}
// Get the token
string token = tokenTask.Token();
// Send the token to our server
// ...