{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "items"
  ],
  "properties": {
    "items": {
      "type": "array",
      "minItems": 1,
      "items": {
        "properties": {
          "label": {
            "type": "string",
            "title": "Label"
          },
          "value": {
            "anyOf": [
              {
                "type": "number"
              },
              {
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "title": "Value"
          },
          "unit": {
            "type": "string",
            "title": "Unit",
            "default": ""
          },
          "detail": {
            "anyOf": [
              {
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "title": "Detail"
          },
          "tone": {
            "type": "string",
            "enum": [
              "neutral",
              "up",
              "down"
            ],
            "title": "Tone",
            "default": "neutral"
          }
        },
        "additionalProperties": false,
        "type": "object",
        "required": [
          "label",
          "value"
        ],
        "title": "Metric"
      }
    }
  }
}