curl --request GET \
  --url https://api.arbiterapi.com/v1/matching-markets \
  --header 'X-API-Key: <api-key>'

{
  "matches": [
    {
      "polymarket": {},
      "kalshi": {},
      "score": 123,
      "confidence": "<string>"
    }
  ],
  "total": 123
}