event object for the pre-user-registration Actions trigger provides contextual information about the trigger execution.
event.authentication
Details about authentication obtained during the pre user registration flow.
event.client
Information about the Client with which this transaction was initiated.
event.connection
Details about the Connection that was used to register the user.
event.custom_domain
Details about the custom domain associated with the current transaction.
event.request
Details about the request that initiated the transaction.
event.security_context
An object containing fingerprint signatures. This will be available only if the client is using cloudflare. The JA3/JA4 fingerprint can be null or empty in some cases. The most common case is for HTTP requests because JA3 and JA4 are calculated in TLS. It can also be empty due to the Worker sending requests within the same zone or to a zone that is not proxied (or a third party).
event.tenant
Details about the Tenant associated with the current transaction.
event.transaction
Details about the current transaction.
event.user
An object describing the user who is attempting to register.
event.secrets
Secret values securely associated with this Action.