The Open Commerce API (OCAPI) is specifically designed to facilitate external interactions with the B2C Commerce platform. Updating inventory information from a warehouse management software via OCAPI is an appropriate use case because it involves synchronizing external system data with the commerce platform. OCAPI provides a robust set of resources that enable external systems to update inventory levels effectively, ensuring that the inventory data on the commerce site is current and accurate, which is critical for maintaining operational efficiency and customer satisfaction.