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Historical Odds API Documentation

Requirement

You need an API key to use OddsBlaze. Get access at www.oddsblaze.com.

Description​

This endpoint returns historical odds, including CLV, OLV, and full line movement history.

API Endpoint​

https://historical.oddsblaze.com/

Parameters​

key (required)​

Your OddsBlaze API key.

id (required)​

The odds id (e.g. DraftKings#982ad372-58ac-535b-b92f-cd7b70f9fbb8#Moneyline#Seattle Mariners).

price​

The price format: american (default), decimal, fractional, probability, malaysian, indonesian, or hong_kong.

time_series​

Include line movement history (&time_series).

locked​

Include locked odds in time series (&locked).

Example URLs​

Historical odds, CLV and OLV:

https://historical.oddsblaze.com/?key=your_key&id=DraftKings%23982ad372-58ac-535b-b92f-cd7b70f9fbb8%23Run%20Line%23Baltimore%20Orioles%20%2B5

Historical odds, CLV and OLV, line movement history:

https://historical.oddsblaze.com/?key=your_key&id=DraftKings%23982ad372-58ac-535b-b92f-cd7b70f9fbb8%23Run%20Line%23Baltimore%20Orioles%20%2B5&time_series

Historical odds, CLV and OLV, line movement history, locked odds included:

https://historical.oddsblaze.com/?key=your_key&id=DraftKings%23982ad372-58ac-535b-b92f-cd7b70f9fbb8%23Run%20Line%23Baltimore%20Orioles%20%2B5&time_series&locked

Example Response​

{
    "updated": "2025-08-14T04:42:51.308Z",
    "id": "DraftKings#982ad372-58ac-535b-b92f-cd7b70f9fbb8#Run Line#Baltimore Orioles +5",
    "market": "Run Line",
    "name": "Baltimore Orioles +5",
    "selection": {
        "name": "Baltimore Orioles",
        "line": 5
    },
    "olv": {
        "price": "−770",
        "timestamp": 1755136330682
    },
    "clv": {
        "price": "−800",
        "timestamp": 1755146571308
    },
    "entries": [
        {
            "price": "−770",
            "locked": false,
            "timestamp": 1755136330682
        },
        {
            "price": null,
            "locked": true,
            "timestamp": 1755136997563
        },
        {
            "price": "-780",
            "locked": false,
            "timestamp": 1755137000646
        },
        {
            "price": null,
            "locked": true,
            "timestamp": 1755137417324
        },
        {
            "price": "−800",
            "locked": false,
            "timestamp": 1755137418745
        }
    ]
}