Direct Respan gateway example that populates Customer email / name / ID, filterable metadata, native custom properties, and model / token / cost on the request log.
Not persisted. This field is used first; otherwise routes use RESPAN_API_KEY from Vercel or .env.local.
Direct Respan gateway request with top-level customer_params, metadata, and properties. Populates customer columns, filterable metadata, native custom properties, and keeps model / tokens / cost intact.
Sent as customer_params.email.
Sent as customer_params.name.
Sent as customer_params.customer_identifier.