Haka Resource Registry is a tool to produce Haka metadata. IdP and SP administrators are able to manage entities to which they have granted access. Access requires approval from the administrative Haka contact of the registrant organisation. Unauthenticated user is able to add new entries, but can't modify or view them. Authentication is based on Haka. Users without access to Haka-credentials may use Eduuni-Id for authentication. Registration is needed to use Eduuni-Id.