Cerkl Cerkl (pronounced circle) increases audience engagement for organizations of all sizes. Cerkl Success Portal Help Desk Learn about Cerkl here, find articles and training materials to share with your team. Webinars The Cerkl team is here to help you reach your engagement goals. API Documentation Everything you need to integrate Cerkl with your existing CRM, CMS, etc. Cerkl Namespace Use this as a guide to help structure your RSS feeds.