Scott Gruber (Twitter)Does @CraftCMS or @statamic support web mentions? #IndieWeb
— Scott Gruber (@scott_gruber) January 10, 2020
There’s definitely a Webmention plugin for Craft which was written by Matthias Ott, but it’s only compatible with v2 and not v3.
See also: https://twitter.com/search?q=from%3A%40m_ott+webmention+craft
There’s an IndieWeb stub page for Statamic, but no examples of usage yet.
I’m curious to hear what you think of them after playing a bit.