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 FinalEDM0.547FLA0.458MLBNYY0.582LAD0.421WNBANYL0.634LVA0.370MLBCHC0.498ATL0.505UFC prediction-market data, fight to the result.
DepthFeed records the full order book of every Polymarket and Kalshi UFC market, then joins each fight to the official result and the per-fight moneylines. 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
per-fight
moneylines
the one individual sport ESPN retains odds for
99.96%
verified settlements
settled market winners checked against the real final score
fighter
resolution
every market resolved to the official result by fighter
The product
One UFC game, one document
Every feed knows the same UFC 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.
ESPN
Official result by fighter — plus the per-fight moneyline, the one individual sport ESPN retains odds for.
GET /v1/games/ufc-313-jones-aspinall-2026-05-31200 · matched
{
"competitors": [ { "name": "Aspinall", "winner": true },
{ "name": "Jones", "winner": false } ],
"odds": [ { "fight": "main", "aspinall": -150,
"jones": +130 } ],
"markets": [ { "kind": "fight_winner",
"winner": "Aspinall" }, … ]
}
Resolved by fighter and settlement-verified — fight markets, per-fight moneylines, and the result 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
UFC & MMA coverage
UFC carries order-book depth, settlement, official results by fighter, and per-fight moneylines — the one individual sport ESPN retains odds for.
Fight moneylines
Per-fight odds from ESPN
Results
Official result by fighter, winner flags
Title fights
Main events recorded continuously
Settlement
Verified against the official result
Resolution
Matched to the bout by fighter names
Why DepthFeed
The best source of UFC prediction-market data
Sports odds APIs give you a fight moneyline at best. Exchange APIs hand you a raw Polymarket book with no bout attached. Only DepthFeed welds the prediction-market depth, the per-fight moneyline, and the official result into one verified UFC record.
| 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. | |||
| Sportsbook odds in the same recordOdds APIs serve lines only — no prediction-market book beside them. | |||
| Final scores & results joined to the market | |||
| Settlement-verified market-to-game join (99.96%)No other source cross-checks settled market winners against the real result. | |||
| 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 UFC prediction-market data, DepthFeed is the only API that joins Polymarket and Kalshi order-book depth to official results and per-fight moneylines, resolved by fighter and settlement-verified.
✓ 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 UFC 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 UFC 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.
ufc.sh
# Browse live UFC markets
$ curl -s -H "Authorization: Bearer $KEY" \
"https://api.depthfeed.com/v3/sports/markets?league=ufc&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 UFC prediction markets
A fight market is a clean binary that can swing on a weigh-in or a late replacement. UFC prediction-market data is only useful joined to the bout it settled on and the moneyline behind the price.
01
Resolved by fighter
DepthFeed resolves every Polymarket and Kalshi UFC market to its real bout by fighter names, with per-fighter winner flags, and verifies the result against settlement. One request returns the market, the per-fight moneyline, and the official result as one document.
02
Depth on the binary
In a two-outcome fight market, the book is the whole story. DepthFeed records the live UFC order book on Polymarket and Kalshi — both sides, every level — 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.
03
The only individual sport with odds
UFC is the one individual sport ESPN retains odds for — DepthFeed carries per-fight moneylines beside the prediction-market book, so you can measure the market against the closing line fight by fight.
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 UFC market — recorded with full order-book depth and settlement, resolved to the real bout by fighter names with per-fighter winner flags, and joined to ESPN's per-fight moneylines. UFC is the one individual sport ESPN retains pre-fight odds for.
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.