{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/amplitude/refs/heads/main/json-schema/chart-annotations-api-annotation-schema.json",
  "title": "Annotation",
  "description": "Annotation schema from Amplitude Chart Annotations API",
  "type": "object",
  "properties": {
    "id": {
      "type": "integer",
      "description": "The unique identifier of the annotation."
    },
    "label": {
      "type": "string",
      "description": "The display label for the annotation."
    },
    "date": {
      "type": "string",
      "format": "date",
      "description": "The start date of the annotation in YYYY-MM-DD format."
    },
    "end_date": {
      "type": "string",
      "format": "date",
      "description": "The end date of the annotation for date ranges. Null for point-in-time annotations."
    },
    "details": {
      "type": "string",
      "description": "Additional details or notes for the annotation."
    },
    "category": {
      "type": "string",
      "description": "The category of the annotation for organization purposes."
    },
    "chart_id": {
      "type": "integer",
      "description": "The ID of the chart the annotation is associated with. Null for project-wide annotations."
    },
    "created_at": {
      "type": "string",
      "format": "date-time",
      "description": "The timestamp when the annotation was created."
    },
    "updated_at": {
      "type": "string",
      "format": "date-time",
      "description": "The timestamp when the annotation was last updated."
    }
  }
}