curl --request GET \
  --url https://api.agg.market/midpoints \
  --header 'x-app-id: <api-key>'

{
  "data": [
    {
      "venueMarketId": "<string>",
      "venue": "<string>",
      "midpoint": 123,
      "spread": 123,
      "timestamp": 123,
      "outcomes": [
        {
          "venueMarketOutcomeId": "<string>",
          "label": "<string>",
          "midpoint": 123
        }
      ],
      "matched": [
        {
          "venueMarketId": "<string>",
          "venue": "<string>",
          "midpoint": 123
        }
      ]
    }
  ]
}