Source code available at github. Search for alexa-web-check. When you say "check amazon", it will check http://amazon.com and https://amazon.com and respond "website is up on HTTP only", "website is up on HTTPS only", "website is up on HTTP and HTTPS", or "website is down". When you say "check my sites", it will get your site list you entered via https://alexa.agilesalt.com, and check them.
“Alexa, ask Web Check to see if google is running”