curl --request POST \
  --url https://api.iotools.cloud/v1/tool/macronutrient-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "calories": "2000",
  "preset": "balanced",
  "proteinPercent": "30",
  "carbsPercent": "40",
  "fatPercent": "30",
  "meals": "3"
}
'

{
  "tool": "macronutrient-calculator",
  "tool_version": "1.0.1",
  "outputs": {
    "dailyTable": [
      {
        "macro": "Protein",
        "grams-day": "150 g",
        "calories": "600 kcal",
        "of-calories": "30%"
      },
      {
        "macro": "Carbs",
        "grams-day": "200 g",
        "calories": "800 kcal",
        "of-calories": "40%"
      },
      {
        "macro": "Fat",
        "grams-day": "67 g",
        "calories": "600 kcal",
        "of-calories": "30%"
      },
      {
        "macro": "Total",
        "grams-day": "417 g",
        "calories": "2000 kcal",
        "of-calories": "100%"
      }
    ],
    "mealTable": [
      {
        "macro": "Protein",
        "grams-meal": "50 g",
        "calories-meal": "200 kcal"
      },
      {
        "macro": "Carbs",
        "grams-meal": "67 g",
        "calories-meal": "267 kcal"
      },
      {
        "macro": "Fat",
        "grams-meal": "22 g",
        "calories-meal": "200 kcal"
      },
      {
        "macro": "Total",
        "grams-meal": "139 g",
        "calories-meal": "667 kcal"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}