How to use [auth.ticket.refresh]

The reference page of auth.ticket.refresh has its arguments, constraints and declaration.

This slot returns a new JWT token from an old existing (and valid) token. However, the new token will have a new expiration date, further into the future, allowing you to create a timer that occasionally invokes the server to create a new token, preventing the user from being logged out due to having his or her JWT token becoming expired.

auth.ticket.refresh

Like all auth related slots, it only makes sense to invoke from within a context of having an authorised user, such as an HTTP endpoint intended to be invoked by an authenticated user.