The ApiLogger plugin allows random sampling of API requests.
Installation ============ add "addPlugin('ApiLogger');" to the bottom of your config.php
Settings ======== frequency: How often to sample (number between 0.0 and 1.0 representing percentage -- e.g.: 0.1 will check about 10% of hits). Default 1.0
Example ======= addPlugin('ApiLogger', array( 'frequency' => 1.0 ));