Once the Kurodo-dokoro (Board of Archivists) was established in the Heian period, the role of chamberlains rapidly became less important, and eventually, Dainagon (chief councilor of state), Chunagon (vice-councilor of state) or Sangi (councillor) also served as chamberlain.
平安時代に蔵人所が設置されてその役割が急速に縮小され、多くは大納言、中納言、参議が兼任するようになる。