curl --request POST \
  --url https://api.iotools.cloud/v1/tool/net-promoter-score-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "promoters": "520",
  "passives": "300",
  "detractors": "180"
}
'

{
  "tool": "net-promoter-score-calculator",
  "tool_version": "1.0.2",
  "outputs": {
    "results": [
      {
        "metric": "Total Responses",
        "value": "1,000"
      },
      {
        "metric": "Promoters",
        "value": "520 (52.0%)"
      },
      {
        "metric": "Passives",
        "value": "300 (30.0%)"
      },
      {
        "metric": "Detractors",
        "value": "180 (18.0%)"
      },
      {
        "metric": "Net Promoter Score",
        "value": "34.0"
      },
      {
        "metric": "Rating",
        "value": "Great"
      }
    ]
  },
  "credits_used": 5,
  "credits_remaining": null
}