I used to use custom gotify php file to catch Proxmox notification into my central log and notification system but now webhook is available I got it to work directly with my own notification log system. If you have examples of webhook API working for different services post them here.
Mine is: GET:
Mine is: GET:
example.com/notification.php?password=password&title={{ url-encode title }}&message={{ url-encode message }}&priority={{ url-encode severity }}