NYK0.612
SAS0.391NHL Cup Final
EDM0.547
FLA0.458MLB
NYY0.582
LAD0.421WNBA
NYL0.634
LVA0.370MLB
CHC0.498
ATL0.505DepthFeed records the full order book of every Polymarket sports market — every price, every bid, every ask, every level — then welds it to the final score, the sportsbook lines, and the injury report as it stood before tip-off. Available through DepthFeed's REST API and live WebSocket.
Desk includes sports REST + WebSocket · 7-day evaluation available.
Knicks0.612▲0.609-135-1380.612Spurs0.391▼0.394+115+1180.394Oilers0.5470.551-120-1180.551Panthers0.458▲0.452+102+1000.458Yankees0.582▲0.578-142-1400.582Dodgers0.4210.426+120+1220.426Liberty0.6340.630-170-1720.634Aces0.370▼0.374+145+1480.374369,000 markets across 13 leagues — every one resolved to its real-world game
NFL
NBA
MLB
NHL
WNBA
UFC
Premier League
Champions League
La LigaCFBCFBCBBCBBATPTennisevery Polymarket & Kalshi sports book on record
markets, odds, results & injuries in one document
settled winners checked against final scores
every status change pushed to your webhook, signed
Every feed in sports knows the same game by a different name — a slug on Polymarket, an event id at ESPN, a rotation number at the book. DepthFeed resolves them to one record and answers a single request with everything that game was.
PolymarketOrder-book depth — every level on both sides, captured as complete ladders.
KalshiYes/no books and settlement for every sports market.
Final scores, box scores, play-by-play — plus multi-book moneyline, spread, and total odds.
League-wide injury reports, swept every 60 seconds.
A fill has a cost the last trade never shows. DepthFeed records the live order book for sports markets on Polymarket and Kalshi, so your strategy sizes against the liquidity that actually existed at that moment.
Knicks
Spurs
M. Carter · PGQuestionable → Out
D. Alvarez · WRLimited → Questionable
T. Okafor · SPDay-to-day → 15-day IL
R. Lindqvist · GProbable → Confirmed
A. Reyes · FOut → AvailableEvery big pre-game move starts in the injury report. DepthFeed watches the report for you — across NFL, NBA, MLB, NHL, WNBA, and the college leagues — and fires a signed webhook the moment a status flips.
Each tile shows exactly which layers that league carries — the US majors run the full stack down to play-by-play and player props resolved to real athletes; soccer adds two decades of normalized multi-book historical odds, and extends past these tiles to 20+ competitions.
Use a paid key or request a seven-day production evaluation.
Filter the live catalog by league and venue, then select an outcome asset.
Receive complete ladders over WebSocket as the underlying book changes.
# What is trading now, across both venues
$ curl -s -H "Authorization: Bearer $KEY" \
"https://api.depthfeed.com/v3/sports/overview"
# Discover live NBA markets
$ curl -s -H "Authorization: Bearer $KEY" \
"https://api.depthfeed.com/v3/sports/markets?league=nba&limit=25"
# Stream a full Polymarket sports ladder
$ wscat -c "wss://api.depthfeed.com/v3/stream?api_key=$KEY"
> {"op":"subscribe","channels":["book:sports:polymarket:<token_id>"]}Polymarket's own interface shows you a price. A strategy needs the book behind it — and the game behind the book. Polymarket sports price data is only useful joined to the result that settled it, the sportsbook line it traded against, and the injury report that moved it.
Polymarket names a moneyline with a slug; ESPN files the same game under an event id. DepthFeed's entity-resolution layer welds the two — and keeps proving the weld by checking every settled market's winner against the real final score, with 99.96% agreement. One request, and the market, the multi-sportsbook line, the result, and the injury report arrive as one document.
A last price hides the spread and the size sitting at every level. DepthFeed records the live Polymarket order book — both sides, every level — so a backtest fills against the liquidity that actually existed, not a mid-price nobody could have traded. Depth cannot be backfilled: the tape only exists because someone was recording.
Polymarket lines move on injury news before most feeds publish it. DepthFeed sweeps league-wide reports every 60 seconds across the US majors and pushes each status change to your webhook — HMAC-signed, filterable by league and status. The change-log is archived forward, so you can replay the report exactly as it stood at any minute before tip-off.
One account and one API for the complete DepthFeed lineup. Polymarket and Kalshi sports coverage ships together; tiers change history, throughput, and live-book concurrency.
A limited sample of the complete DepthFeed API.
Start freeEvery venue, with room to build.
Get Quant3× the history, 2× the throughput of Quant.
Get Desk LiteDedicated capacity for systematic desks.
Get DeskThe short version of what people ask before they pull their first game document.
The order books, prices, and settlements of sports markets on prediction exchanges like Polymarket and Kalshi — moneylines, spreads, totals, and props traded as binary contracts. DepthFeed records those markets continuously and, crucially, entity-resolves each one to the real-world game: final score, multi-sportsbook odds, and the injury report as it stood before tip-off. In short, it is Kalshi and Polymarket sports price data — every price at every level — tied to the game that settles it.
Something else? Read the docs or ask us directly.
Markets, full ladders, sportsbook odds, scores, and injuries — one DepthFeed account, with a seven-day Desk evaluation available for production benchmarking.