curl --request POST \
  --url https://api.iotools.cloud/v1/tool/regex-converter \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "regexPattern": "(?P<name>\\w+)\\s+(?P=name)",
  "flags": "i",
  "sourceFlavor": "pcre",
  "targetFlavor": "javascript"
}
'

{
  "tool": "regex-converter",
  "tool_version": "1.0.1",
  "outputs": {
    "convertedRegex": "(?<name>\\w+)\\s+\\k<name>",
    "convertedFlags": "i",
    "conversionNotes": [
      {
        "status": "Success",
        "note": "Named group syntax changed: (?P<name>) → (?<name>)"
      },
      {
        "status": "Success",
        "note": "Named backreference syntax changed: (?P=name) → \\k<name>"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}