That's neat. Since the underlying web site is contacting Let's Encrypt in order to obtain the certificate from Let's Encrypt, maybe you could increase the automation, speed, and reliability by removing the web site middleman? All of the code for the site is publicly available.<p><a href="https://github.com/diafygi/gethttpsforfree" rel="nofollow">https://github.com/diafygi/gethttpsforfree</a><p>(I realize it's not super-simple to just do a port because the site's code is comparatively complex Javascript, so you couldn't just paste it into your code as a library.)