curl --request POST \
  --url https://api.iotools.cloud/v1/tool/isbn-validator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "isbn": "0-306-40615-2"
}
'

{
  "tool": "isbn-validator",
  "tool_version": "1.0.1",
  "outputs": {
    "result": [
      {
        "property": "Status",
        "value": "Valid ISBN-10"
      },
      {
        "property": "Valid",
        "value": "Yes"
      },
      {
        "property": "Format Detected",
        "value": "ISBN-10"
      },
      {
        "property": "Check Digit",
        "value": "2"
      },
      {
        "property": "Normalized",
        "value": "0306406152"
      },
      {
        "property": "Equivalent ISBN-13",
        "value": "9780306406157"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}