Markets & depth
Polymarket + Kalshi order books, both sides
Live
NBA Finals
NYK0.612
SAS0.391NHL Cup Final
EDM0.547
FLA0.458MLB
NYY0.582
LAD0.421WNBA
NYL0.634
LVA0.370MLB
CHC0.498
ATL0.505
NYK0.612SAS0.391NHL Cup FinalEDM0.547FLA0.458MLBNYY0.582LAD0.421WNBANYL0.634LVA0.370MLBCHC0.498ATL0.505Boxing prediction-market data, on the record.
DepthFeed records the full order book of every Polymarket and Kalshi boxing market — fight winners, method, and rounds — both sides, every level, continuously, and captures each market's settled outcome on close. Available through DepthFeed's REST API and live WebSocket.
Desk includes sports REST + WebSocket · 7-day evaluation available.
DepthFeed
Jun 12 · liveNBAMLBNHLWNBAEPL
MoneylineSpreadTotalProps
Settlement-verifiedTimeTeamPolymarketKalshiDKFDBest
20:30Knicks0.612▲0.609-135-1380.612
Knicks0.612▲0.609-135-1380.612Spurs0.391▼0.394+115+1180.39420:00Oilers0.5470.551-120-1180.551
Oilers0.5470.551-120-1180.551Panthers0.458▲0.452+102+1000.45819:05Yankees0.582▲0.578-142-1400.582
Yankees0.582▲0.578-142-1400.582Dodgers0.4210.426+120+1220.42619:00Liberty0.6340.630-170-1720.634
Liberty0.6340.630-170-1720.634Aces0.370▼0.374+145+1480.374369,412 markets on tapeorder books streaming
369,000 markets across 13 leagues — every one resolved to its real-world game
NFL
NBA
MLB
NHL
WNBA
UFC
Premier League
Champions League
La LigaCFBCFBCBBCBBATPTennis2
venues on tape
every Polymarket & Kalshi market, both sides of the book
Settlement
every market
the winning outcome captured on close
Forward
captured tape
depth archived as it traded — cannot be backfilled
Title fights
on the record
main events recorded continuously
The product
One Boxing game, one document
Every feed knows the same Boxing game by a different name — a slug on Polymarket, an event id at ESPN, a ticker on the exchange. 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.
Settlement
Each market's own resolution — the winning outcome captured on close.
GET /v1/games/boxing-usyk-dubois-2026-05-30200 · matched
{
"market": { "fight": "Usyk vs Dubois", "kind": "fight_winner" },
"depth": { "levels": 14, "both_sides": true },
"settlement": { "winner": "Usyk", "resolved": true }
}
Forward-captured depth and settlement-labelled — the fight market and its settled outcome on one bout.
Market depth
Backtest against the book, not the headline price
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.
- Every level, both sides — not a last price or a mid nobody could trade
- Forward-captured continuously; order-book history cannot be backfilled
- Replayable: snapshot time-series per outcome token via one endpoint
Knicks
SpursBest bid
0.612
Mid
0.6135
Best ask
0.615
Spread
0.003
Cumulative depthBidsAsks
Imbalance
54 / 46
Coverage
Boxing coverage
Boxing carries order-book depth and settlement on every Polymarket and Kalshi market — fight winner, method, and rounds — recorded continuously and labelled by what settled. There is no external sportsbook-odds or per-bout results layer here.
Fight winner
Binary markets recorded continuously
Method & rounds
Derived markets on the tape
Title fights
Main events on the record
Settlement
Winning outcome captured on close
Forward tape
Depth archived as it traded
Why DepthFeed
The best source of Boxing prediction-market data
Sports odds APIs give you a fight line at best, and exchange APIs hand you a raw live book with nothing archived. Only DepthFeed records every Polymarket and Kalshi boxing market as forward-captured order-book depth and labels it by the market's own settlement.
| Capability | DepthFeedthis API | Sports odds APIsthe-odds-api, SportsDataIO | Exchange APIsPolymarket / Kalshi direct |
|---|---|---|---|
| Prediction-market order-book depth (both sides, every level)Exchange APIs expose a raw live book — DepthFeed records every level on both sides as complete ladders. | |||
| Forward-captured as a queryable history, not just liveDepth cannot be backfilled once the game is over — the archive only exists because it was recorded live. | |||
| Settlement captured for every market (winner on close)Each market's own resolution is recorded so the depth archive is labelled win/loss, end to end. | |||
| One request returns the whole game as one documentMarkets, depth, settlement — and odds, result and injuries where the sport carries them — in a single record. |
The bottom line. For boxing prediction-market data, DepthFeed is the only API that records every Polymarket and Kalshi boxing market as forward-captured order-book depth, both sides and every level, labelled win/loss by the market's own settlement.
✓ full · – partial · ✕ not offered. Comparison reflects the standard data products of each category; individual vendors vary. DepthFeed is independent and not affiliated with any exchange, sportsbook, or league.
Quickstart
From key to live Boxing depth in minutes
Sports REST is included on every DepthFeed tier; Quant, Desk Lite, and Desk add one, two, and three live sports books.
- 01
Get a Desk key
Use a paid key or request a seven-day production evaluation.
- 02
Browse Boxing markets
Filter the live catalog, then choose the outcome asset you want to follow.
- 03
Pull or stream depth
Fetch the latest complete ladder over REST, or subscribe to the same book over WebSocket.
boxing.sh
# Browse live Boxing markets
$ curl -s -H "Authorization: Bearer $KEY" \
"https://api.depthfeed.com/v3/sports/markets?league=boxing&limit=25"
# Pull the latest full book for an outcome asset
$ curl -s -H "Authorization: Bearer $KEY" \
"https://api.depthfeed.com/v3/sports/books/<asset_id>/latest"Complete ladders·REST + WebSocket·Desk access
Why joined data
What it takes to model the boxing prediction markets
A fight market is a clean binary that can swing on a weigh-in, a late pull-out, or a single round. Boxing prediction-market data is only useful as the book behind the price — recorded as it traded and labelled by what settled.
01
Depth is the truth
In a two-outcome fight market, the book is the whole story. DepthFeed records the live boxing order book on Polymarket and Kalshi — both sides, every level, continuously — so a backtest fills against the liquidity that actually existed into the walk-out, not a last price. Depth is forward-captured and cannot be backfilled.
02
Settlement on every market
Each boxing market's own resolution — the winning outcome on close — is captured, so the depth archive is labelled win/loss end to end. You can backtest a price against what actually settled, fight after fight.
03
An honest scope
ESPN does not retain a structured pre-fight odds line or a per-bout results feed for boxing the way it does for the team sports, so DepthFeed's boxing coverage is the prediction-market book and its settlement — not a sportsbook-odds or external-result join. For combat sports with a full result join, see the UFC coverage.
Pricing
Choose capacity, not venues
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.
Explorer
$0free, no card
A limited sample of the complete DepthFeed API.
Start free- 7-day unified history
- Sports REST: Polymarket + Kalshi
- Read-only API, 1 req/sec
- Sub-second event-driven snapshots
- BTC markets (latest, capped)
- Live WebSocket stream: 1 BTC subscription
- Backtest Lab + 1 paper-trading strategy
Quant
Most popular$29per month
Every venue, with room to build.
Get Quant- 30-day unified history, all assets
- Every supported venue — no add-ons
- Sports REST + injury webhooks + 1 live sports book
- Full bid/ask book depth
- Any interval: 1m, 5m, 1h… or raw ticks
- API 25 req/sec, 1,000 req/min
- Underlying price stamped per snapshot
- Live WebSocket stream: 5 subscriptions, 1 connection, every venue
- Backtest Lab + 5 paper-trading strategies (webhook signals)
Desk Lite
$79per month
3× the history, 2× the throughput of Quant.
Get Desk Lite- 90-day unified history (3× Quant)
- API 50 req/sec, 3,000 req/min
- Everything in Quant
- Every supported venue — no add-ons
- Sports REST + 2 live sports books
- Live WebSocket: 25 subscriptions, 2 connections
- 15 paper-trading strategies
Desk
Full archive$200per month
Dedicated capacity for systematic desks.
Get Desk- Full historical archive — our deepest window
- Sports full archive across every supported league
- Dedicated capacity, 100 req/sec
- 6,000 req/min sustained
- Everything in Desk Lite
- Priority backfill requests
- Live WebSocket: 100 subscriptions, 5 connections, wildcards + 3 sports books
- 7-day production-latency evaluation available on request
- 40 paper-trading strategies
FAQ
Common questions
The short version of what people ask before they pull their first game document.
Every Polymarket and Kalshi boxing market — fight winner, method, and round markets — recorded with full order-book depth (both sides, every level, continuously) and each market's settled outcome captured on close. Coverage is the prediction-market book and its settlement, not a sportsbook-odds or external-results join.
Something else? Read the docs or ask us directly.
Stop joining sports data by hand
Markets, full ladders, sportsbook odds, scores, and injuries — one DepthFeed account, with a seven-day Desk evaluation available for production benchmarking.