Snip from Data.php that determines whether or not the merchant has onboarded

Data.php

 public function getRegistrationRequest()
    {
        $request = new Varien_Object();
        /** @var $fabricAuth Xcom_Xfabric_Model_Authorization */
        $fabricAuth = Mage::helper('xcom_xfabric')->getAuthModel();

        $postData = array();
        $postData['target_capability_name'] = 'Your Extension Name Here';
        $postData['legal_agreement_url'] = self::YOUR_LICENSE_URI;
        $postData['store_instance_name']    = (string)Mage::app()->getConfig()->getNode(
            'default/xfabric/connection_settings/onboarding_store_instance_name'
        );
        $postData['is_registered']          = $fabricAuth->hasAuthorizationData() ? 1 : 0;
        $postData['store_endpoint_url'] = $fabricAuth->getEndpointUrl();

        $jsonData = Zend_Json::encode($postData);
        $request->setOnboardingInfo(urlencode($jsonData));
        return $request;
    }