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{
  "type": "object",
  "properties": {
    "title": {
      "type": "string",
      "minLength": 1,
      "description": "Display title for the new event."
    },
    "start": {
      "type": "string",
      "format": "date-time",
      "description": "Inclusive event start (ISO 8601 with offset). Resolve relative times via calendar_get_context first."
    },
    "end": {
      "type": [
        "string",
        "null"
      ],
      "format": "date-time",
      "description": "Exclusive event end as ISO 8601 date-time with explicit offset, or null for open-ended. Omit on create to use host defaults."
    },
    "allDay": {
      "type": "boolean",
      "description": "Whether the event spans full calendar days without clock times. Defaults to false when omitted."
    }
  },
  "required": [
    "title",
    "start"
  ],
  "additionalProperties": false
}