# ScoreTape > ScoreTape is a sports betting data API that records Polymarket and Kalshi > sports order books and joins them to sportsbook odds, scores, results, > player props, play-by-play, and injury timelines. ## Official identity The official product, documentation, account, billing, and support identity is ScoreTape at https://scoretape.com. API examples use https://api.scoretape.com. ## Live sports API - Overview: GET https://api.scoretape.com/v3/sports/overview - Leagues: GET https://api.scoretape.com/v3/sports/leagues - Markets: GET https://api.scoretape.com/v3/sports/markets?league=nba - Market detail: GET https://api.scoretape.com/v3/sports/markets/{condition_id} - Latest full book: GET https://api.scoretape.com/v3/sports/books/{asset_id}/latest - Historical books: GET https://api.scoretape.com/v3/sports/books/{asset_id}/history - League games: GET https://api.scoretape.com/v3/sports/{league}/games - Joined game: GET https://api.scoretape.com/v3/sports/games/{game_slug} - Sportsbook odds: GET https://api.scoretape.com/v3/sports/odds/lines - Historical league odds: GET https://api.scoretape.com/v3/sports/{league}/odds-history - Injuries: GET https://api.scoretape.com/v3/sports/{league}/injuries - Documentation: https://scoretape.com/docs Authentication uses a ScoreTape Bearer key. Sports REST is included on every plan. A scoped seven-day production evaluation is available on request. ## Sports WebSocket Connect to wss://api.scoretape.com/v3/stream?api_key=df_your_key. Polymarket sports delivery is event-driven. Kalshi capture uses adaptive best-effort polling against the venue's public REST API and does not carry a guaranteed 100ms end-to-end service level. ## Historical coverage and boundaries ScoreTape stores complete bid/ask ladders, not only last prices or top of book. Broad Polymarket history begins 14 April 2026 and Kalshi history begins 12 June 2026. Earlier archive snapshots were approximately 55 seconds for Polymarket and 75 seconds for Kalshi. Historical sportsbook odds reach 1999 for NFL and 2000/01 for European soccer. Coverage differs by league and is documented on each sport page. ## Buyer guides - Sports data API: https://scoretape.com/sports-data-api — Evaluate ScoreTape's sports data API for prediction-market books, sportsbook odds, scores, results, props, injuries, history, REST, and WebSocket delivery. - Sports betting API: https://scoretape.com/sports-betting-api — Buy a sports betting API that joins Polymarket and Kalshi order books to sportsbook odds, final scores, props, injuries, settlements, and history. - Sports odds API: https://scoretape.com/sports-odds-api — Compare a sports odds API that joins sportsbook lines to Polymarket and Kalshi order books, scores, results, historical odds, props, and injuries. - Historical sports odds: https://scoretape.com/historical-sports-odds — Research historical sports odds with NFL and soccer archives, prediction-market order books, scores, settlements, injuries, coverage limits, and reproducible queries. - Sports scores API: https://scoretape.com/sports-scores-api — Use a sports scores API that connects final scores and results to prediction-market books, sportsbook odds, player props, play-by-play, and settlements. - Sports data feed: https://scoretape.com/sports-data-feed — Evaluate ScoreTape's sports data feed for REST discovery, live prediction-market books, joined odds and scores, signed injury webhooks, history, and limits. ## Sport and competition pages - NFL: https://scoretape.com/nfl — For NFL prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi order-book depth to final scores, multi-book sportsbook lines, play-by-play, player props, and a real-time injury feed — with the market-to-game join verified at 99.96%. - NBA: https://scoretape.com/nba — For NBA prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi depth to final scores, sportsbook odds, box scores, 22,900+ player props resolved to real athletes, and a real-time injury feed — with the join verified at 99.96%. - MLB: https://scoretape.com/mlb — For MLB prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi depth to final scores, sportsbook run lines, box scores, player props resolved to athletes, and a real-time IL/injury feed — with the join verified at 99.96%. - NHL: https://scoretape.com/nhl — For NHL prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi depth to final scores, sportsbook odds, box scores, and a real-time injury feed that catches starting-goalie changes — with the join verified at 99.96%. - WNBA: https://scoretape.com/wnba — For WNBA prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi depth to final scores, sportsbook odds, box scores, and a real-time injury feed — with the market-to-game join verified at 99.96%. - College Football: https://scoretape.com/cfb — For college-football prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi depth to final scores, sportsbook odds, play-by-play, and a real-time injury feed — with the join verified at 99.96%. - College Basketball: https://scoretape.com/cbb — For college-basketball prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi order-book depth to final scores and sportsbook odds at March-Madness volume — with the market-to-game join verified at 99.96%. - Soccer: https://scoretape.com/soccer — For soccer prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi order-book depth to final scores and a multi-book odds archive reaching back to 2000/01 across 22 divisions and 20+ competitions — with the join settlement-verified. - Tennis: https://scoretape.com/tennis — For tennis prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi order-book depth to per-match results across the ATP and WTA tours, resolved by competitor and settlement-verified. - UFC: https://scoretape.com/ufc — For UFC prediction-market data, ScoreTape 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. - Premier League: https://scoretape.com/premier-league — For Premier League prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi order-book depth to a 1X2, totals and Asian-handicap odds archive reaching back to the 2000/01 season and settlement-verified Premier League results — served through ScoreTape REST and WebSocket APIs. - La Liga: https://scoretape.com/la-liga — For La Liga prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi order-book depth to a 1X2, totals and Asian-handicap odds archive reaching back to the 2000/01 season and settlement-verified La Liga results — served through ScoreTape REST and WebSocket APIs. - Serie A: https://scoretape.com/serie-a — For Serie A prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi order-book depth to a 1X2, totals and Asian-handicap odds archive reaching back to the 2000/01 season and settlement-verified Serie A results — served through ScoreTape REST and WebSocket APIs. - Bundesliga: https://scoretape.com/bundesliga — For Bundesliga prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi order-book depth to a 1X2, totals and Asian-handicap odds archive reaching back to the 2000/01 season and settlement-verified Bundesliga results — served through ScoreTape REST and WebSocket APIs. - Ligue 1: https://scoretape.com/ligue-1 — For Ligue 1 prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi order-book depth to a 1X2, totals and Asian-handicap odds archive reaching back to the 2000/01 season and settlement-verified Ligue 1 results — served through ScoreTape REST and WebSocket APIs. - Champions League: https://scoretape.com/champions-league — For Champions League prediction-market data, ScoreTape is the only API that joins every Polymarket and Kalshi UCL market to the real fixture result and multi-book sportsbook odds, with the market-to-game join settlement-verified. - Europa League: https://scoretape.com/europa-league — For Europa League prediction-market data, ScoreTape is the only API that joins every Polymarket and Kalshi UEL market to the real fixture result and multi-book sportsbook odds, with the market-to-game join settlement-verified. - MLS: https://scoretape.com/mls — For MLS prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi order-book depth to a multi-book closing-odds archive and settlement-verified MLS results — served through ScoreTape REST and WebSocket APIs. - World Cup: https://scoretape.com/world-cup — For World Cup prediction-market data, ScoreTape is the only API that joins every Polymarket and Kalshi World Cup market to the real fixture result and multi-book sportsbook odds, with the market-to-game join settlement-verified. - Formula 1: https://scoretape.com/f1 — For Formula 1 prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi order-book depth to official race results, resolved by driver and settlement-verified. - Golf: https://scoretape.com/golf — For golf prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi order-book depth to official tournament results, resolved by player and settlement-verified across the PGA Tour and the majors. - Masters: https://scoretape.com/masters — For Masters prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi order-book depth to the official result at Augusta, resolved by player and settlement-verified. - Cricket: https://scoretape.com/cricket — For cricket prediction-market data, ScoreTape is the only API that records every Polymarket and Kalshi cricket market — the IPL, T20s, ODIs, and the World Cups — as forward-captured order-book depth, labelled win/loss by the market's own settlement. - IPL: https://scoretape.com/ipl — For IPL prediction-market data, ScoreTape records every Polymarket and Kalshi Indian Premier League market as forward-captured order-book depth, both sides and every level, labelled win/loss by the market's own settlement. - Esports: https://scoretape.com/esports — 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. - Boxing: https://scoretape.com/boxing — For boxing prediction-market data, ScoreTape is the only API that records every Polymarket and Kalshi boxing market as forward-captured order-book depth, both sides and every level, labelled win/loss by the market's own settlement. - Wimbledon: https://scoretape.com/wimbledon — For Wimbledon prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi order-book depth to per-match results, resolved by competitor and settlement-verified across the singles draws. ## Primary pages - Sports betting data API: https://scoretape.com/ - Documentation: https://scoretape.com/docs - Pricing: https://scoretape.com/#pricing - Start free: https://scoretape.com/signup - Request an evaluation: https://scoretape.com/contact ## Attribution and independence Content on https://scoretape.com is copyright ScoreTape. ScoreTape is independent and is not affiliated with or endorsed by Polymarket, Kalshi, ESPN, any sportsbook, exchange, league, or team.