curl --request POST \
  --url https://api.iotools.cloud/v1/tool/luhn-algorithm-validator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "mode": "validate",
  "number": "4539 1488 0343 6467"
}
'

{
  "tool": "luhn-algorithm-validator",
  "tool_version": "1.0.1",
  "outputs": {
    "result": [
      {
        "property": "Status",
        "value": "Valid Luhn number"
      },
      {
        "property": "Valid",
        "value": "Yes"
      },
      {
        "property": "Detected Format",
        "value": "Visa"
      },
      {
        "property": "Check Digit",
        "value": "7"
      },
      {
        "property": "Digit Count",
        "value": "16"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}