Thread:Talk:Requests for comment/API Future/action=sitematrix

Note that this action is WMF-specific, added by Extension:SiteMatrix. It could probably have been put into $wgAPIMetaModules instead of $wgAPIModules easily enough, but it can't really be merged with  unless we put in a hook just for that. And then  would most likely wind up behaving differently on WMF wikis versus other MediaWiki installations, which would probably not be a good thing.