Connect to Humanity API from Chrome Extension?

I'm wondering if it's possible to connect to the Humanity API through a Chrome extension. It seems like the API's CORS policy blocks the request. I attempted to add the extension's URL (chrome-extension://uniqueIDNumberHere) as the redirect URL in the Humanity API setup, but still ran into the CORS problem. The exact same attempt seems to work from Postman, however.

Is it possible to connect directly from an extension? And if so, how would I go about that?