Authentication Token Expiry

When using Fluent APIs, an authentication token is required for every request. You can reuse the same token until it expires.

Every token has a limited lifetime and can be invalidated for a number of reasons. It will expire periodically.

Integrations built against the APIs will need to manage re-authentication in the event that the token has expired.

Care should, however be taken not to enter an infinite loop for re-authentication in the case of an error.