Wordpressさんnodeinfoの現行全バージョンに対応してるんだー
$ curl -s https://wordpress.example.com/.well-known/nodeinfo | jq -r '.links | .[] | .rel'
http://nodeinfo.diaspora.software/ns/schema/2.1
http://nodeinfo.diaspora.software/ns/schema/2.0
http://nodeinfo.diaspora.software/ns/schema/1.1
http://nodeinfo.diaspora.software/ns/schema/1.0