curl --request POST \
  --url https://api.iotools.cloud/v1/tool/chmod-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "ownerRead": "true",
  "ownerWrite": "true",
  "ownerExecute": "true",
  "groupRead": "true",
  "groupWrite": "",
  "groupExecute": "true",
  "otherRead": "true",
  "otherWrite": "",
  "otherExecute": ""
}
'

{
  "tool": "chmod-calculator",
  "tool_version": "1.0.1",
  "outputs": {
    "numeric": "754",
    "symbolic": "rwxr-xr--",
    "chmodCommand": "chmod 754 filename"
  },
  "credits_used": 3,
  "credits_remaining": null
}