Schema.org ItemList

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://schema.org/schemas/item-list.json",
  "title": "Schema.org ItemList",
  "description": "A list of items of any sort, for example, Top 10 Restaurants, Recommended Products, or a list of music tracks.",
  "type": "object",
  "required": ["@type", "itemListElement"],
  "properties": {
    "@type": {
      "type": "string",
      "description": "The Schema.org type.",
      "enum": ["ItemList", "BreadcrumbList", "HowToSection", "HowToStep", "OfferCatalog"]
    },
    "@context": {
      "type": "string",
      "default": "https://schema.org"
    },
    "name": {
      "type": "string",
      "description": "The name of the list."
    },
    "description": {
      "type": "string",
      "description": "A description of the list."
    },
    "url": {
      "type": "string",
      "format": "uri",
      "description": "URL of the list."
    },
    "itemListElement": {
      "type": "array",
      "description": "The items in the list.",
      "items": {
        "oneOf": [
          { "$ref": "#/$defs/ListItem" },
          { "type": "object" },
          { "type": "string" }
        ]
      }
    },
    "itemListOrder": {
      "type": "string",
      "enum": ["ItemListOrderAscending", "ItemListOrderDescending", "ItemListUnordered"],
      "description": "Type of ordering."
    },
    "numberOfItems": {
      "type": "integer",
      "description": "The number of items in an ItemList."
    }
  },
  "$defs": {
    "ListItem": {
      "type": "object",
      "description": "An item in a list.",
      "properties": {
        "@type": { "type": "string", "const": "ListItem" },
        "position": { "type": "integer", "description": "The position of an item in a series." },
        "name": { "type": "string", "description": "The name of the item." },
        "url": { "type": "string", "format": "uri", "description": "URL of the item." },
        "item": {
          "type": "object",
          "description": "The item represented by this list item.",
          "properties": {
            "@type": { "type": "string" },
            "name": { "type": "string" },
            "url": { "type": "string", "format": "uri" }
          }
        }
      }
    }
  }
}