Xert API and CORS issue

As a personal side project I’m building a UI for the Xert API using ClojureScript. It is browser only with no backend and as such I have an issue with the browser and CORS. I don’t think the Xert API backend is configured to allow this. I have had to use a Chrome extension to “fix” Access Control Allow Origin to allow my local development domain.

Can this be fixed? If so I can host the project for others to look at?