"You could pretty easily integrate this into the existing Parsely plugin to make it even more seamless for both VIP and self-hosted users (warning: code is untested)":
add_action( 'pre_amp_render_post', 'parsely_amp_add_actions' );
function parsely_add_amp_actions() {
add_filter( 'amp_post_template_analytics', 'parsely_amp_add_analytics' );
}
function parsely_amp_add_analytics( $analytics ) {
global $parsely;
$parsely_options = $parsely->get_options();
if ( empty( $parsely_options['apikey'] ) ) {
return $analytics;
}
$analytics['wp-parsely'] = array(
'type' => 'parsely',
'attributes' => array(),
'config_data' => array(
'vars' => array(
'apikey' => $parsely_options['apikey'],
)
),
);
return $analytics;
}