jetpack_connection_bypass_error_reporting_gateWhether to bypass the gate for the error handling By default, we only process errors once an hour for each error code. This is done to avoid overflows. If you need to disable this gate, you can set this variable to true. This filter is useful for unit testing
jetpack_device_detection_get_infoFilter the value of Device_Detection::get_info.
grunion_after_feedback_post_insertedFires after the feedback post for the contact form submission has been inserted.
jetpack_sso_login_form_below_wpcomAllow extension below Jetpack’s SSO form.
jetpack_sso_login_form_above_wpcomAllow extension above Jetpack’s SSO form.
jetpack_sync_non_blockingFilters the option to enable non-blocking sync. Default value is false, filter to true to enable non-blocking mode which will have WP.com return early and use the sync/close endpoint to check-in processed items.
jetpack_publicize_optionsFilters the options for Publicize. As of Jetpack 8.5, the array keys could be: attach_media bool If Publicize should send the image to the social media platform. Default false.
jetpack_show_setup_wizardDetermines if the Setup Wizard is displayed or not.
jetpack_constant_default_valueFilters the value of the constant.
Jetpack Developer Resources 