X-API-Key header for request authentication. API Key in our Cloud Console. We highly recommend using this method only for server-to-server integration to authenticate requests from the code that is not accessible for the user. Anyway, read below what to do if your API Key is compromised or you want to renew it.Obsolete API Key concept for the case when you need to reset your current API Key to prevent integration downtime. Current API Key becomes obsolete after reset and will work until you remove it.