curl --request POST \
  --url https://api.iotools.cloud/v1/tool/hex-dump-viewer \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "inputText": "Hello, World!",
  "bytesPerRow": "16",
  "byteGrouping": "2",
  "offsetFormat": "hex"
}
'

{
  "tool": "hex-dump-viewer",
  "tool_version": "1.0.1",
  "outputs": {
    "hexDump": "00000000: 4865 6c6c 6f2c 2057 6f72 6c64 21         Hello, World!"
  },
  "credits_used": 3,
  "credits_remaining": null
}