online interactions, content, and account settings on a large communications platform on the same terms as a user. (b) Authentication Not later than 180 days after the date of enactment of this Act, the Commission shall establish rules and procedures to facilitate a custodial third-party agent’s ability to obtain access pursuant to subsection (a) in a way that ensures that a request for access on behalf of a user is a verifiable request. (c) Registration with the Commission A custodial third-party agent shall register with the Commission as a condition of, and prior to, accessing an interface described in subsection (a). (d) Deregistration by the Commission The Commission shall establish rules and procedures to deregister a custodial third-party agent that the Commission determines has violated the duties established in this section. (e) Revocation of access rights A large communications platform provider may revoke or deny access for any custodial third-party agent that— (1) fails to register with the Commission