{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://api.sentinel-hub.com/schemas/CatalogStacExtensions",
  "title": "STAC extensions",
  "type": "array",
  "uniqueItems": true,
  "items": {
    "anyOf": [
      {
        "title": "Reference to a JSON Schema",
        "type": "string",
        "format": "uri"
      },
      {
        "title": "Reference to a core extension",
        "type": "string"
      }
    ]
  }
}