Question: Is there an API call that clears the cache?

Answer: Yes, Comet Cache exposes an API method that makes this possible.

Here is a quick example of how to handle this in PHP code.

<?php
comet_cache::clear();

TIP: If you want to make it possible to call this remotely, you might put together a Must-Use plugin in WordPress, where the MU plugin is just one file that exposes this functionality.

Create the following directory and file: /wp-content/mu-plugins/cc-clear.php

<?php
add_action('init', function()
{
    if(!empty($_GET['cc_clear']) && $_GET['cc_clear'] === 'my-secret-key')
     { comet_cache::clear(); exit('cache cleared'); }
});

Now you would be able to call upon the Comet Cache API remotely by including your secret key. http://example.com/?cc_clear=my-secret-key