Prediction Markets API

Real-Time Order Books,
Every Prediction Market,
One Clean API

Stop stitching venues together. Access full order books, top-of-book quotes, traded volume, and fixture-level liquidity from Kalshi, Polymarket, Novig, ProphetX and every major prediction market — all mapped to unified, normalized event, market, and outcome IDs in a single feed.

Book a Demo Docs ↗
LIVE
Lakers ML−257 Chiefs −3.5−112 Dodgers ML−145 Mahomes o274.5 Pass−118 Celtics ML−180 Over 224.5−108 Jokić o11.5 Ast+102 Warriors +6.5−105 Lakers ML−257 Chiefs −3.5−112 Dodgers ML−145 Mahomes o274.5 Pass−118 Celtics ML−180 Over 224.5−108 Jokić o11.5 Ast+102 Warriors +6.5−105
12,480 updates/sec
200+Books & Operators
2,500+Markets
400msMedian Refresh
99.99%Uptime SLA
One Integration

Stop Stitching
Providers Together

One integration replaces a dozen. We ingest every source and hand you a single, consistent schema — so your team builds product instead of plumbing.

  • 200+ sources mapped to one fixture, player, and market model
  • Prediction markets, exchanges, sportsbooks, and DFS & pick'em
  • Deduplicated lines with consistent IDs across every book
Every source, one feed
11Prediction Markets
9Exchanges
191Sportsbooks
31DFS / Pick'em
KalshiPolymarketCrypto.comDraftKings PredictionsFanDuel PredictionsFanatics MarketsRobinhoodCoinbaseNovigProphetXPredictItSporttradeUnderdog PredictBetfair See all feeds
Real-Time

Your Models React First

Sub-second delivery on the books where live edges actually exist. Pull on demand or subscribe to a push stream — no polling, no stale prices.

  • 400ms median refresh, 99.99% uptime SLA
  • Pre-match and in-play across every market
  • Server-Sent Events stream or REST — your choice
LATENCY
420ms
Active
Ingestion
Active
Normalization
Active
Delivery
Depth

Deep Markets, Fully Laddered

Every player prop and alternate line, end to end — not just the headline number. Plus game props, futures, and live odds movement, all timestamped.

  • Player props with full alternate ladders
  • Game props, periods, futures, and same-game data
  • Live odds movement, timestamped to the millisecond
Receiving Yards Ladder · CeeDee Lamb
Alternates, end to end
50+ Receiving Yards−210
60+ Receiving Yards−128
70+ Receiving Yards+120
80+ Receiving Yards+178
Cowboys vs. Eagles
Cowboys ML −165 · Eagles ML +140
62%
Cowboys win prob
One Platform

Everything in One Feed

Consolidate the entire betting data stack — no more juggling providers for each data type.

Pre-Match & In-Play

Real-time main lines, alternates, and props across pre-game and live.

Player Props & Alts

Full prop boards with alternate ladders on every line.

Futures

Season-long, tournament, and award markets, normalized across books.

Schedules & Lineups

Complete schedules and confirmed lineups across leagues.

Automated Bet Grading

Programmatic settlement for SGPs, props, and standard markets.

Deeplinks

Route users to the exact market, book, and line — built for conversion.

Global Reach

Comprehensive
Data Coverage

Every major league and market — with alternate ladders on every line.

Supported Leagues
NFLNCAAFNBAWNBANCAABMLBNHLUFCMLSEPLLa LigaUEFA Champions LeagueSerie ABundesligaLigue 1ATPWTA
Player Prop Markets — NFL example
Passing YardsPassing TDsInterceptionsCompletionsReceiving YardsReceptionsAnytime TDRushing YardsCarriesLongest ReceptionFirst TDTackles + Assists+ 25 more+ alts on every line
Ship in an Afternoon

Built for Developers,
by Developers

Clean, predictable responses. One key, full docs, and SDKs in your language. Live in minutes, not weeks.

GET /api/markets?league=NFL&is_live=true
Copy 
{
  "markets": [
    {
      "id": "0192b4a1-8f13-7c2b-8629-aa3ef295e2f0",
      "odds": 2.10,
      "number": 82.5,
      "side": "Over",
      "bet_type": "Player Prop",
      "prop_name": "Receiving Yards",
      "league": "NFL",
      "is_alt": false,
      "is_live": true,
      "odd_provider_id": 17,
      "fixture_id": "01926d5e-819d-7b33-b7ff-bbe89e134958",
      "player_id": "01923438-08b3-7dac-bd8a-303c95dbb396",
      "move_dir": "up"
    }
  ]
}
● 200 OK · 47msapplication/json
View Full Documentation ↗
REST & Streaming

Pull via REST or subscribe to a real-time Server-Sent Events push stream.

SDK Libraries

Python, JavaScript, Go — typed clients to integrate fast.

Sandbox & Playground

Test endpoints and explore live data right from the docs.

Talk to a Data Expert

One API to Power
Your Entire Stack

Join the sportsbooks, market makers, and betting platforms already building on Betstamp data.

Book a Demo
FAQ

Questions, Answered

What is the Betstamp Prediction Markets API?
A single API that delivers normalized, real-time prediction market data — full order book depth, top-of-book quotes, traded volume, and fixture-level liquidity — from Kalshi, Polymarket, Novig, ProphetX and every other major venue, alongside odds from 200+ sportsbooks and exchanges. One integration, one schema, every source.
Which prediction markets and venues do you cover?
200+ sources: 11 prediction markets, 9 exchanges, 191 sportsbooks, and 31 DFS/pick'em operators. We cover 2,500+ markets across the NFL, NBA, MLB, NHL, college football and basketball, soccer (EPL, La Liga, UCL and more), UFC, tennis, and others — including main lines, player props, game props, alternates, and futures.
How do I get the data — REST or streaming?
Both. Pull on demand via REST, or subscribe to a real-time Server-Sent Events stream for push updates. Median refresh is 400ms with a 99.99% uptime SLA. You can also access everything visually through the PRO Odds Screen.
How fast can we integrate?
Most teams are pulling live data the same day. Grab an API key, hit a single endpoint, and you get a clean, consistent JSON response with stable IDs across every book — plus SDKs and full docs to move fast.