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 FinalEDM0.547FLA0.458MLBNYY0.582LAD0.421WNBANYL0.634LVA0.370MLBCHC0.498ATL0.505Kalshi Esports data, on the record.
DepthFeed records the full order book of every Kalshi Esports market — every bid, every ask, every level — then joins it to the official result. Available through DepthFeed's REST API and live WebSocket.
Desk includes sports REST + WebSocket · 7-day evaluation available.
ScoreTape
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
bo3.gg
match results
winner, map score & discipline; coverage growing
CS2/Dota
LoL/Valorant
four disciplines recorded on the tape
Settlement
every market
the winning outcome captured on close
The product
One Esports game, one document
Every feed knows the same Esports game by a different name — a slug on Polymarket, an event id at ESPN, a ticker on the exchange. ScoreTape 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.
bo3.gg
Match results — winner, map score, and discipline from bo3.gg. Coverage is growing.
GET /v1/games/esports-navi-faze-2026-06-12200 · matched
{
"match": { "teams": "NAVI vs FaZe", "winner": "NAVI", "maps": "2–1" },
"markets": [ { "kind": "match_winner",
"winner": "NAVI" }, … 6 ],
"source": { "results": "bo3.gg", "discipline": "CS2" }
}
Resolved to the bo3.gg match and settlement-captured — match markets and the series result on one CS2 match.
Market depth
Backtest against the book, not the headline price
A fill has a cost the last trade never shows. ScoreTape 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
Esports coverage — CS2, Dota, LoL, Valorant
Esports carries order-book depth and settlement across CS2, Dota 2, League of Legends, and Valorant, with match results from bo3.gg where coverage exists. Sportsbook odds are not retained upstream, so this is the prediction-market book plus the match result.
CS2
Match-winner markets on tape
Dota / LoL
Best-of series recorded continuously
Valorant
Match markets on the record
Results
Winner, map score & discipline (bo3.gg)
Settlement
Winning outcome captured on close
Why ScoreTape
The best source of Kalshi Esports data
Kalshi's own interface shows you a price. A strategy needs the book behind it — and the game behind the book. DepthFeed records the full Kalshi Esports order book — both sides, every level — and joins it to the real result.
| Capability | ScoreTapethis 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 — ScoreTape 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. | |||
| Final scores & results joined to the market | |||
| 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 Kalshi Esports data, DepthFeed records the full Kalshi Esports order book — both sides, every level — and joins it to the match result.
✓ full · – partial · ✕ not offered. Comparison reflects the standard data products of each category; individual vendors vary. ScoreTape is independent and not affiliated with any exchange, sportsbook, or league.
Quickstart
From key to live Esports depth in minutes
Sports REST is included on every ScoreTape 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 Esports 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.
esports.sh
# Browse live Esports markets
$ curl -s -H "Authorization: Bearer $KEY" \
"https://api.scoretape.com/v3/sports/markets?league=esports&limit=25"
# Pull the latest full book for an outcome asset
$ curl -s -H "Authorization: Bearer $KEY" \
"https://api.scoretape.com/v3/sports/books/<asset_id>/latest"Complete ladders·REST + WebSocket·Desk access
Why joined data
What it takes to model the esports prediction markets
Esports markets move fast on a roster swap, a patch, and live momentum — and resolve on a best-of series. Esports prediction-market data is only useful joined to the match it settled on and the book behind the price.
01
Depth is the whole story
In a clean match-winner market, the book is the truth. ScoreTape records the live esports order book on Polymarket and Kalshi — both sides, every level, continuously — so a backtest fills against the liquidity that actually existed through a best-of-three, not a last price. Depth is forward-captured and cannot be backfilled.
02
Resolved to the match
ScoreTape resolves esports markets to the real match from bo3.gg — winner, map score, and discipline (CS2, Dota 2, League of Legends, Valorant). Results coverage is forward-growing as the worker deepens its paging, and each market also carries its own settlement, so the depth archive is labelled win/loss either way.
03
Settlement on every market
Every esports market's own resolution — the winning outcome on close — is captured, so the order-book tape is labelled end to end even where the external match record is still filling in. The join you can always trust is the market and its settled outcome.
Pricing
Choose capacity, not venues
One account and one API for the complete ScoreTape 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 ScoreTape 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 esports market — match winners across CS2, Dota 2, League of Legends, and Valorant — recorded with full order-book depth and settlement, and resolved to the real match (winner, map score, discipline) from bo3.gg where coverage exists. Match-result coverage is forward-growing.
Something else? Read the docs or ask us directly.
Stop joining sports data by hand
Markets, full ladders, sportsbook odds, scores, and injuries — one ScoreTape account, with a seven-day Desk evaluation available for production benchmarking.