{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "additionalProperties": true,
  "properties": {
    "_slug": {
      "description": "Entry identifier (URL slug / filename without extension)",
      "type": "string"
    },
    "title": {
      "description": "Event title",
      "type": "string"
    },
    "description": {
      "description": "Event description",
      "type": "string"
    },
    "terminZeit": {
      "description": "Event date/time",
      "format": "date-time",
      "type": "string"
    },
    "link": {
      "description": "Optional link (e.g. registration or details page)",
      "type": "string"
    }
  },
  "required": ["_slug", "title", "terminZeit"],
  "type": "object"
}