Probably you can since you are not setting up any cookie on user's device. But most likely you are using some web fonts or CDN which might set some cookie. So f

Probably you can since you are not setting up any cookie on user's device. But most likely you are using some web fonts or CDN which might set some cookie. So for modern web application it will be really hard unless you host everything yourself and rely on server logs for any analytics. You have to be careful though if you are processing API request and capturing personally identifiable information. Your logs also need to be GDPR compliant.