see for example <https://www.w3.org/wiki/LinkHeader>
you could probably get an easy RFC writing credit specifying this if that’s something you want on your resume
“The "meta" link header is used to point to a resource which provides metadata about a thing. There are no constraints on the format of this metadata. Implementations MAY use content negotiation to allow clients to request metadata in a particular format.
Security Concerns: None, beyond those present in web linking in general.”