{
  "type": "object",
  "description": "A variable on a catalog item form.",
  "name": "CatalogVariable",
  "properties": {
    "name": {
      "type": "string",
      "description": "The internal name of the variable."
    },
    "label": {
      "type": "string",
      "description": "The display label."
    },
    "type": {
      "type": "string",
      "description": "The variable type."
    },
    "mandatory": {
      "type": "boolean",
      "description": "Whether the variable is required."
    },
    "default_value": {
      "type": "string",
      "description": "The default value."
    },
    "choices": {
      "type": "array",
      "description": "Available choices for select-type variables.",
      "items": {
        "type": "object",
        "properties": {
          "label": {
            "type": "string"
          },
          "value": {
            "type": "string"
          }
        }
      }
    }
  },
  "$schema": "https://json-structure.org/draft/2020-12/schema"
}