curl --request POST \
  --url https://api.iotools.cloud/v1/tool/css-keyframe-animation-generator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "animationType": "fadeIn",
  "duration": "1",
  "timingFunction": "ease-in-out",
  "delay": "0",
  "iterationCount": "1",
  "direction": "normal"
}
'

{
  "tool": "css-keyframe-animation-generator",
  "tool_version": "1.0.1",
  "outputs": {
    "cssCode": "@keyframes fadeIn {\n  0% {\n    opacity: 0;\n  }\n  100% {\n    opacity: 1;\n  }\n}\n\n.animated-element {\n  animation: fadeIn 1s ease-in-out 0s 1 normal;\n}"
  },
  "credits_used": 3,
  "credits_remaining": null
}