curl --request POST \
  --url https://api.iotools.cloud/v1/tool/color-mixer \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "startColor": "#2563eb",
  "startOpacity": "100",
  "endColor": "#f59e0b",
  "endOpacity": "100",
  "steps": "3",
  "colorSpace": "srgb"
}
'

{
  "tool": "color-mixer",
  "tool_version": "1.0.1",
  "outputs": {
    "mixedColor": "#8D817B",
    "mixTable": [
      {
        "position": "0%",
        "hex": "#2563EB",
        "rgb": "rgb(37, 99, 235)",
        "hsl": "hsl(221, 83%, 53%)"
      },
      {
        "position": "25%",
        "hex": "#5972B3",
        "rgb": "rgb(89, 114, 179)",
        "hsl": "hsl(223, 37%, 53%)"
      },
      {
        "position": "50%",
        "hex": "#8D817B",
        "rgb": "rgb(141, 129, 123)",
        "hsl": "hsl(20, 7%, 52%)"
      },
      {
        "position": "75%",
        "hex": "#C18F43",
        "rgb": "rgb(193, 143, 67)",
        "hsl": "hsl(36, 50%, 51%)"
      },
      {
        "position": "100%",
        "hex": "#F59E0B",
        "rgb": "rgb(245, 158, 11)",
        "hsl": "hsl(38, 92%, 50%)"
      }
    ],
    "gradientCss": "background: linear-gradient(90deg, #2563eb 0%, #5972b3 25%, #8d817b 50%, #c18f43 75%, #f59e0b 100%);"
  },
  "credits_used": 3,
  "credits_remaining": null
}