9.2. Authorization Server Metadata Registration
Per this specification, the following values have been registered in the IANA "OAuth Authorization Server Metadata" registry [IANA.OAuth.Parameters] established by [RFC8414].
Metadata Name: tls_client_certificate_bound_access_tokens
Metadata Description: Indicates authorization server support for mutual-TLS client certificate-bound access tokens.
Change Controller: IESG
Specification Document(s): Section 3.3 of RFC 8705
Metadata Name: mtls_endpoint_aliases
Metadata Description: JSON object containing alternative authorization server endpoints, which a client intending to do mutual TLS will use in preference to the conventional endpoints.
Change Controller: IESG
Specification Document(s): Section 5 of RFC 8705