user_skype_name requiredThe Skype name (login) of the user. With an empty value the whole command expands to nothing. The value is URL-encoded, so spaces and special characters are safe.
action optional default userinfoWhat the Skype link does when clicked, appended to the skype: URL (skype:name?action). Passed through to the URL unchanged (only URL-encoded); the engine does not validate it. The documented values are add, call, chat and userinfo.
style optional default smalliconWhich status-image variant to request from the (now retired) mystatus.skype.com service; it becomes part of the image URL. Passed through unchanged (only URL-encoded), not validated. The documented values are smallicon, mediumicon, balloon, bigclassic, smallclassic (plus add, call, chat).
message optional default Skype meText used for the image alt and title attributes (the tooltip). It is HTML-escaped, so quotes and angle brackets are safe to include.
{skype:johndoe}
{skype:johndoe:chat}
{skype:johndoe:call:mediumicon}
{skype:johndoe:userinfo:balloon:Talk to John}
[{skype:}]
{skype:john doe:call:balloon:Call "John" <now>}