routes.php

<?php

Route::post('oauth/token', function() {
	$oauth = new OAuth2\Provider();
	return $oauth->tokenRequest();
});

Route::filter('oauth', function() {
	$oauth = new OAuth2\Provider();
	return $oauth->filter();
});

Route::filter('optionalAuth', function() {
	$oauth = new OAuth2\Provider();
	$oauth->verifyAccess();
});

Route::group(array('before' => 'oauth'), function() {
	Route::get('private', function() {
		return Response::json(['private' => 'stuff']);
	});
});