v1

latestOpenAPI 3.0.32026-07-2618063.1 KB

Get Matching Markets for Sports

Find equivalent markets across different prediction market platforms (Polymarket, Kalshi, etc.) for sports events. Provide either one or more Polymarket market slugs or Kalshi event tickers.

get/matching-markets/sports

Query parameters

polymarket_market_slugstring[]

The Polymarket market slug(s) to find matching markets for. To get multiple markets at once, provide the query param multiple times with different slugs. Can not be combined with kalshi_event_ticker.

[
  "nfl-ari-den-2025-08-16",
  "nfl-dal-phi-2025-09-04"
]

kalshi_event_tickerstring[]

The Kalshi event ticker(s) to find matching markets for. To get multiple markets at once, provide the query param multiple times with different tickers. Can not be combined with polymarket_market_slug.

[
  "KXNFLGAME-25AUG16ARIDEN",
  "KXNFLGAME-25SEP04DALPHI"
]

Response

Matching markets response

marketsobject

Example response

{
  "markets": {
    "nfl-ari-den-2025-08-16": [
      {
        "platform": "KALSHI",
        "event_ticker": "KXNFLGAME-25AUG16ARIDEN",
        "market_tickers": [
          "KXNFLGAME-25AUG16ARIDEN-ARI",
          "KXNFLGAME-25AUG16ARIDEN-DEN"
        ]
      },
      {
        "platform": "POLYMARKET",
        "market_slug": "nfl-ari-den-2025-08-16",
        "token_ids": [
          "34541522652444763571858406546623861155130750437169507355470933750634189084033",
          "104612081187206848956763018128517335758189185749897027211060738913329108425255"
        ]
      }
    ],
    "nfl-dal-phi-2025-09-04": [
      {
        "platform": "KALSHI",
        "event_ticker": "KXNFLGAME-25SEP04DALPHI",
        "market_tickers": [
          "KXNFLGAME-25SEP04DALPHI-DAL",
          "KXNFLGAME-25SEP04DALPHI-PHI"
        ]
      }
    ]
  }
}