tl;dr;
The status checking URL is gone, your best bet is the API.
Details
There is an API aimed at web developers integrating call functions on their sites. It seems highly restricted, completely missing status-checking and a lot of other functions from the old API:
http://msdn.microsoft.com/en-us/library/office/dn745882.aspx
Microsoft removed support for the old developer API at the end of 2013. A status-checking URL (http://mystatus.skype.com/[username].txt
) was in place until early 2019. It is no longer available.
It required the Skype user to actively enable status checking from the web (it seems to be disabled by default). It could be enabled in Preferences -> Privacy
by ticking Show my status on the web
as of Skype version 6.19. If it was not enabled, the user would be shown as Offline.