stack

{
  "type": "object",
  "required": [
    "url"
  ],
  "properties": {
    "url": {
      "type": "string",
      "format": "uri",
      "description": "Absolute http or https URL. Only the host matters for the cache; a path is followed but never probed separately."
    },
    "render": {
      "type": "boolean",
      "default": false,
      "description": "Render the page in a headless browser before matching. Off by default: plain delivery is faster, cheaper on the origin and enough for almost every site. Turn it on for pages that build their markup entirely in JavaScript."
    },
    "refresh": {
      "type": "boolean",
      "default": false,
      "description": "Bypass the 24 hour cache and fetch the origin again. Same price."
    }
  }
}