Filter the Publicize details form.
publicize_form
publicize_form-
filter -
filter publicize_checkbox_defaultFilter the checkbox state of each Publicize connection appearing in the post editor.
-
filter publicize_checkbox_global_defaultFilters the checkboxes for global connections with non-prilvedged users.
-
action pre_admin_screen_sharingFires at the top of the admin sharing settings screen.
-
filter publicize_api_urlFilters the API URL used to interact with WordPress.com.
-
action publicize_save_metaFires right before the post is processed for Publicize. Users may hook in here and do anything else they need to after meta is written, and before the post is processed for Publicize.
-
filter wpas_submit_post?Filter whether a post should be publicized to a given service.
-
filter jetpack_publicize_global_connections_capFilter the capability to change global Publicize connection options. All users with this cap can un-globalize all other global connections, and globalize any of their own Globalized connections cannot be unselected by users without this capability when publishing.
-
filter wpas_default_suffixFilter the message appended to the Publicize custom message.
-
filter wpas_default_prefixFilter the message prepended to the Publicize custom message.
Jetpack Developer Resources 