Replied to a tweet by 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:
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.