curl --request POST \
  --url https://api.iotools.cloud/v1/tool/code-syntax-highlighter \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "inputCode": "function add(a, b) {\n  return a + b;\n}",
  "language": "javascript"
}
'

{
  "tool": "code-syntax-highlighter",
  "tool_version": "1.0.1",
  "outputs": {
    "outputCode": "function add(a, b) {\n  return a + b;\n}"
  },
  "credits_used": 3,
  "credits_remaining": null
}