Map to CiviCRM plugin?

Sorry for the delay — you can map this plugin to any URL endpoint (including internal files), or you can capture the post values with the hook *service_filter_post_* as explained in the “Other Notes: Hooks” section (and shown in the plugin admin at the bottom).

If you have to write a hook anyway, I would also suggest looking at how my plugin hooks to GF (specifically, in /plugins/gravityforms.php) — you could then just do the same and write a direct mapping to CiviCRM yourself rather than use my plugin.