curl --request POST \
  --url https://api.iotools.cloud/v1/tool/html-generator/iframe \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "customSource": "https://example.com",
  "customTitle": "",
  "customAllowFullscreen": "",
  "customLoading": "eager",
  "customReferrerPolicy": "no-referrer",
  "customHeight": "",
  "customWidth": "",
  "customClasses": ""
}
'

{
  "tool": "html-generator/iframe",
  "tool_version": "1.0.1",
  "outputs": {
    "code": "<iframe src=\"https://example.com\" title=\"Embedded content\" loading=\"eager\" referrerpolicy=\"no-referrer\"></iframe>"
  },
  "credits_used": 3,
  "credits_remaining": null
}