Citi Customers API
The Citi Customers API provides authorized access to retail customer profile information, including contact details and demographic data, for use in onboarding, personalization, and Know-Your-Customer (KYC) workflows. It is part of the Citi Developer Hub retail open-banking catalog and is gated behind OAuth 2.0 customer consent. Documentation is HTML-only on the Citi Partner Portal; no machine-readable spec is published.