curl --request POST \
  --url https://api.iotools.cloud/v1/tool/polygon-diagonals-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "sides": "6"
}'

{
  "tool": "polygon-diagonals-calculator",
  "tool_version": "1.0.2",
  "outputs": {
    "results": [
      {
        "metric": "Total Diagonals",
        "value": "9"
      },
      {
        "metric": "Diagonals per Vertex",
        "value": "3"
      },
      {
        "metric": "Triangles (from one vertex)",
        "value": "4"
      },
      {
        "metric": "Sum of Interior Angles",
        "value": "720°"
      }
    ],
    "diagonals": "1-3, 1-4, 1-5, 2-4, 2-5, 2-6, 3-5, 3-6, 4-6"
  },
  "credits_used": 5,
  "credits_remaining": null
}