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 FinalEDM0.547FLA0.458MLBNYY0.582LAD0.421WNBANYL0.634LVA0.370MLBCHC0.498ATL0.505Esports prediction-market data, draft to the GG.
ScoreTape records the full order book of every Polymarket and Kalshi esports market — match winners across CS2, Dota 2, League of Legends, and Valorant — then resolves each one to the real match result from bo3.gg. Served over one REST API.
Free tier, no card — every league and endpoint included.
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, both sides, tick by tick.
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 tick by tick
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 Esports prediction-market data
Sports odds APIs don't cover esports at all. Exchange APIs hand you a raw book with no match attached. Only ScoreTape records the Polymarket and Kalshi esports book as a queryable, forward-captured archive and resolves it to the real bo3.gg match 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, both sides, tick by tick. | |||
| 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 esports prediction-market data, ScoreTape records the Polymarket and Kalshi esports order book as a queryable archive and resolves it to the real match result from bo3.gg — winner, map score, and discipline across CS2, Dota 2, League of Legends, and Valorant.
✓ 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 joined Esports data in minutes
Every esports endpoint is open on the free tier — pull a match and read the joined document.
- 01
Grab a key
Free tier, no card — every league and endpoint is open from day one.
- 02
Pull a Esports game
One request returns the joined document: markets, odds, result.
- 03
Walk the season
Page every matched game with cursor pagination and reconcile against settlement.
esports.sh
# One Esports game, one document
$ GAME="esports-navi-faze-2026-06-12"
$ curl -s -H "X-API-Key: $KEY" \
"https://api.scoretape.com/v1/games/$GAME"
# Browse this sport's markets
$ curl -s -H "X-API-Key: $KEY" \
"https://api.scoretape.com/v1/esports/games?matched=true"Clean JSON·Cursor pagination·Per-plan rate limits
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, tick by tick — 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
Pick your window
Every plan gets every league and every endpoint. You're choosing how far back the tape rolls — and how hard you can pull on it.
Free
$0free, no card
Seven days of tape to prove it's real.
- 7-day Kalshi & Polymarket tape
- 7-day scores & sportsbook odds
- All leagues, all endpoints
- Read-only API, 1 req/sec
Pro
Most popular$29per month
The modeler's window — a month of tape.
- 30-day Kalshi & Polymarket tape
- 90 days of scores & sportsbook odds
- Real-time injury webhooks (~60s)
- 25 req/sec, 1,000 req/min
- Settlement-verified winners
Scale
$79per month
Two months of tape, a full year of results.
- Everything in Pro
- 60-day Kalshi & Polymarket tape
- Full year of scores & sportsbook odds
- Live order-book snapshots
- 50 req/sec, 3,000 req/min
Enterprise
$200per month
Dedicated lanes for systematic desks.
- Everything in Scale
- Unlimited tape history
- Full sports archive — odds to 1999
- Dedicated capacity, 100 req/sec
- Priority support
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, odds, results, and injuries — already resolved to the same game. The free tier opens every league and endpoint, no card.