Checkout webhooks use `event_type`

Checkout webhooks now send the event name in event_type, like every other Atlas webhook. The eventType field introduced on 22 May 2026 is no longer sent.

{
  "event_type": "CHECKOUT_COMPLETED",
  "data": { "...": "..." }
}

What you need to do

Read event_type from checkout webhooks. If you read eventType, switch to event_type.

See the webhooks guide.