{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://mvp-cc.local/docs/architecture/event-envelope.json",
  "title": "EventEnvelope",
  "type": "object",
  "required": [
    "event_id",
    "event_type",
    "event_version",
    "occurred_at",
    "producer",
    "entity_type",
    "entity_id",
    "routing_key",
    "payload"
  ],
  "properties": {
    "event_id": {"type": "string", "minLength": 1},
    "event_type": {"type": "string", "minLength": 1},
    "event_version": {"type": "integer", "minimum": 1},
    "occurred_at": {"type": "string", "format": "date-time"},
    "producer": {"type": "string", "minLength": 1},
    "entity_type": {"type": "string", "minLength": 1},
    "entity_id": {"type": "string", "minLength": 1},
    "correlation_id": {"type": ["string", "null"]},
    "routing_key": {"type": "string", "minLength": 1},
    "payload": {"type": "object"}
  },
  "additionalProperties": true
}