Overview

Published when a contract reaches REGISTERED. It is the fan-out point of the whole landscape: scoring reacts to it, and arch-hub’s model curator reacts to it to keep the API landscape panel truthful.

Carries the contract identity and version, not the contract body — consumers that need the document fetch it from the registry. That keeps the event small and stops a schema change from becoming a breaking event change.

Payload

{
  "contractId": "orders-api",
  "version": "2.1.0",
  "registeredAt": "2026-08-14T18:02:11Z",
  "registeredBy": "team:orders"
}