The Optimal Blue Application Programming Interface (API) allows for real time product and pricing quotes. This document describes the Optimal Blue API integration with Capsilon. Capsilon is a Loan Officer platform for lenders that are integrating Optimal Blue content into their system via the Optimal Blue API. Capsilon is a full LOS replacement and currently works for all of our Encompass customers on Azure. The LO can price and lock from the Capsilon integration.