How to use kubectl through Access with a Service Token

Hi dear community,
I am trying to configure kubectl to go through Access with a service token.
I didn’t find a good way to pass the custom headers:
CF-Access-Client-ID:
CF-Access-Client-Secret:
to kubectl command.
As showed here https://blog.cloudflare.com/give-your-automated-services-credentials-with-access-service-tokens/

Any advise?
Thanks
Alessandro