curl --request POST \
  --url https://api.iotools.cloud/v1/tool/iso-week-number-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "date": "2020-06-15"
}
'

{
  "tool": "iso-week-number-calculator",
  "tool_version": "1.0.1",
  "outputs": {
    "result": [
      {
        "property": "ISO week number",
        "value": "25"
      },
      {
        "property": "ISO week-year",
        "value": "2020"
      },
      {
        "property": "ISO week",
        "value": "2020-W25"
      },
      {
        "property": "Day of week",
        "value": "Monday (ISO day 1)"
      },
      {
        "property": "Week starts (Monday)",
        "value": "2020-06-15"
      },
      {
        "property": "Week ends (Sunday)",
        "value": "2020-06-21"
      },
      {
        "property": "Weeks in ISO year",
        "value": "53 (long year)"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}