DraftKings Predictions Scraper

Scrape prediction markets, odds and implied probabilities from DraftKings Predictions.

Reads DraftKings' own JSON content API rather than rendering the site, so a full sweep of every category completes in seconds and returns the same numbers the site shows.

Features

• Every category, resolved live — sports, crypto, financials, economics, business, culture and more. The category list is fetched from DraftKings at run time, so leagues that come and go (golf tournaments, tennis draws) are always current.
• Implied probabilities — every outcome carries impliedProbability alongside American and decimal odds.
• One row per market, with all of its outcomes attached. Works uniformly for Yes/No prediction markets and Home/Away or Over/Under sports markets.
• Spread and total lines — sports outcomes include the points value.
• Fails loudly — a run that extracts nothing errors with a diagnosis instead of quietly returning an empty dataset.

Input

Parameter	Type	Default	Description
sportsCategory	array	["crypto"]	Categories to scrape. Matches a DraftKings category (crypto, football, financials, …) or a league directly (nfl, bitcoin, …). Empty means everything.
subcategory	string	""	Narrows to one league within the selected categories, matched on name (bitcoin, nba, s&p). Ignored if it matches nothing.
maxResults	integer	20	Maximum market rows. 0 for unlimited.
includeMoreMarkets	boolean	true	Include every market line per event, not just the primary market. Charged per event that has extra lines.
proxyConfiguration	object	none	Optional. Not normally needed — used only as an automatic fallback if DraftKings blocks the request.

Legacy category values from earlier versions (nfl, cfb, cbb, stock-market, commodities, featured, …) still work and are mapped onto the current catalogue.

Example input

Bitcoin prediction markets:

{ "sportsCategory": ["crypto"], "subcategory": "bitcoin", "maxResults": 0 }

Every NFL market:

{ "sportsCategory": ["nfl"], "maxResults": 0 }

Everything DraftKings currently offers:

{ "sportsCategory": [], "maxResults": 0 }

Output

One record per market. outcomes holds every priced side of that market.

{
  "category": "Crypto",
  "subcategory": "Bitcoin",
  "type": "market",
  "sportId": "342",
  "leagueId": "217196",
  "league": "Bitcoin",
  "eventId": "2b692370-18a3-49b7-4e00-08dea7b6bc05",
  "eventName": "Bitcoin",
  "eventStatus": "NOT_STARTED",
  "eventTime": "2026-08-12T14:00:00.0000000Z",
  "participants": [],
  "marketId": "349246184",
  "marketTitle": "When will Bitcoin cross $100k again?",
  "marketType": "Predictions CDNA Crypto FreeStyleName Generic",
  "subcategoryId": 19679,
  "outcomes": [
    {
      "label": "Before January 2027 - Yes",
      "outcomeType": "Yes",
      "participant": "Before January 2027",
      "americanOdds": "+376",
      "decimalOdds": 4.761905,
      "impliedProbability": 0.21,
      "points": null
    }
  ],
  "yesOdds": "+733",
  "noOdds": "-1011",
  "impliedProbability": 0.12,
  "url": "https://predictions.draftkings.com/en",
  "sourceUrl": "https://sportsbook-nash.draftkings.com/api/sportscontent/dkusnj/v1/leagues/217196",
  "scrapedAt": "2026-08-12T01:21:13.170Z",
  "isMoreMarkets": true
}

For a sports market the same shape applies, with team participants and a spread line:

{
  "category": "Basketball",
  "subcategory": "WNBA",
  "marketTitle": "Spread",
  "eventName": "NY Liberty @ IND Fever",
  "participants": [
    { "id": "36125", "name": "IND Fever", "venueRole": "Home" },
    { "id": "36124", "name": "NY Liberty", "venueRole": "Away" }
  ],
  "outcomes": [
    { "label": "NY Liberty", "outcomeType": "Away", "americanOdds": "+105", "impliedProbability": 0.487, "points": 12.5 },
    { "label": "IND Fever", "outcomeType": "Home", "americanOdds": "-135", "impliedProbability": 0.574, "points": -12.5 }
  ]
}

Field notes

• outcomeType is Yes/No on prediction markets and Home/Away/Over/Under on sports markets.
• americanOdds is normalized to an ASCII minus (DraftKings serves a Unicode −).
• impliedProbability is a fraction, so 0.21 means 21%.
• points is the spread or total line; null on prediction markets.
• yesOdds / noOdds are convenience accessors for binary markets; null when the market is not Yes/No.
• url points at the site rather than the specific league, because DraftKings' public league slugs are not derivable from any field the API exposes. sourceUrl is the exact API call the row came from.

Notes

• maxResults counts market rows, not individual outcomes.
• A single run is capped at 80 leagues.
• Extraction technique and API details: docs/draftkings/strategy.md.