New fields on Odd model: order_book and source

Order Book

We are now exposing the order books for the exchanges we support that expose it. This can help provide a bigger picture of where users want to place bets.

Source Ids

We are now exposing the source ids for some exchanges to help facilitate matching. This is useful for hyper latency sensitive applications that connect directly to the exchange's apis and don't want to rely on our poll rate for pricing. This way you can make a single call to our api, get the necessary ticker / token / source ids for the exchange of interest and subscribe to the exchange directly or make orders via API.

Example:

These are available on both the /fixtures/odds and the /stream/odds endpoints.

{
                    "id": "40294-35775-2025-11-30:kalshi:moneyline:new_york_knicks",
                    "sportsbook": "Kalshi",
                    "market": "Moneyline",
                    "name": "New York Knicks",
                    "is_main": true,
                    "selection": "New York Knicks",
                    "normalized_selection": "new_york_knicks",
                    "market_id": "moneyline",
                    "selection_line": null,
                    "player_id": null,
                    "team_id": "6A36E386117E",
                    "price": 1.31,
                    "timestamp": 1764536802.4131637,
                    "grouping_key": "default",
                    "points": null,
                    "deep_link": null,
                    "limits": {
                        "max": 108.25
                    },
                    "order_book": [
                        [
                            1.31,
                            108.25
                        ],
                        [
                            1.293,
                            91866.72
                        ],
                        [
                            1.278,
                            25744.13
                        ]
                    ],
                    "source_ids": {
                        "market_id": "KXNBAGAME-25NOV30TORNYK-NYK",
                        "selection_id": "yes"
                    }
                },