Blog
Sports Odds API Guides & Tutorials
How sportsbook APIs work and how to build with them: live odds over REST, WebSocket and delta streams, odds math, comparison and arbitrage tools, racing and prediction markets.
New here? Start with what a sportsbook API is or make your first request.
- ChangelogCoverage5 min read
New Sports on 32 Bookmakers: Formula 1, Darts, Snooker and More
77 new sport feeds on 32 bookmakers: Formula 1 on BetMGM and Bwin, darts and snooker on Betfred, ice hockey on Kalshi and Polymarket, and netball's debut.
- GuideSportsbook APIOdds Data8 min read
What Is a Sportsbook API? A Developer's Guide
A sportsbook API returns bookmaker odds, markets, live scores and results as JSON. What the data looks like, how it is delivered and why normalization matters.
- GuideOdds APIEvaluation9 min read
How to Choose a Sports Odds API: 10 Things to Check
A practical checklist for evaluating a sports odds API: coverage, market depth, live latency, delivery, schema, racing, results, rate limits, pricing and docs.
- GuideWebSocketStream APIREST7 min read
Live Odds: REST Polling vs WebSocket vs Delta Streams
REST polling, the live WebSocket or the delta Stream API? How PulseScore's three ways to get live odds compare on limits, bandwidth, code and plans.
- TutorialNode.jsOdds Comparison7 min read
How to Build an Odds Comparison Tool with One API
Build an odds comparison tool in Node.js: pull one league from several bookmakers with one API key, match fixtures, show the best price and each book's margin.
- GuideOdds MathPython8 min read
Implied Probability, Overround and No-Vig Odds Explained
Convert odds to implied probability, measure a bookmaker's overround and margin, remove the vig to get fair odds, and run the math in Python on live API data.
- GuidePrediction MarketsPython7 min read
Polymarket and Kalshi Odds API: Prediction Markets Data
Get Polymarket and Kalshi sports prices through one API: odds, last price, bid/ask, volume and open interest in the same schema as sportsbook odds.
- GuideHorse RacingPython5 min read
Horse Racing Odds API: Race Cards, Runners & Each-Way Prices
Horse racing and greyhound odds as JSON: race cards with runners, jockeys, trainers and each-way terms over REST, plus racing streams. Python code included.
- TutorialGetting StartedREST API7 min read
Getting Started with the PulseScore API
Make your first PulseScore API call: get a free key, fetch live and pre-match odds as normalized JSON, page through boards, use the WebSocket and handle 429s.
- TutorialArbitragePython10 min read
Build an Arbitrage Betting Bot Across Bookmakers
Find sure bets across bookmakers in Python: match the same fixture on every book, compare 1X2 and over/under prices, size the stakes, respect rate limits.
- TutorialPythonBet3657 min read
How to Get Real-Time Bet365 Odds in Python
Fetch live and pre-match Bet365 odds in Python: a paced requests client, pagination, market picking, 429 handling and a reconnecting WebSocket for in-play odds.