Builds a simple MARC authority record based on Wikidata properties. This demo can use the Wikidata QID number to locate an Item or a named_as (P1810) literal. This literal must be on the record’s P244 (LCCN) as a qualifier or as a primary statement and represents the authorized direct order string heading.

Based on this mapping. Very few properties are currently mapped, more work is needed to cover all the possibilities. This API can create a textual MARC display, MARC XML and MARC binary.

Source code
Information about PCC Wikidata Pilot
And Library of Congress Pilot group