BuddyPress.org

If you simply want to add links to the BuddyBar, then hook into the “bp_adminbar_menus” action.

eg.

function my_custom_adminbar_links() {
echo '<li>Pretend this is a link!</li>';
}
add_action( 'bp_adminbar_menus', 'my_custom_adminbar_links' );

Put this snippet somewhere in your theme’s functions.php.