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WebSocketSports

TheRundown Sports Odds & Scores API (WebSocket)

TheRundown Sports Odds & Scores API (WebSocket) is a websocket from TheRundown providing sports data. TheRundown is a real-time sports odds and scores API that normalizes live betting lines, scores, and schedules from 18+ sportsbooks and prediction markets across 30+ leagues. Its Ultra-tier WebSocket pushes sub-second odds/score updates, letting a Polymarket bot reprice in-game game-outcome models against the live sportsbook consensus.

At a glance

ProviderTheRundown
TypeWebSocket
CategorySports
Real-timeYes — streaming
AuthAPI key
PricingFree tier (20k data points/day, no WebSocket); paid from $49/mo; WebSocket requires Ultra at $399/mo — Free: $0, 20k data points/day, 3 books, 5-min delay, no WebSocket, Starter $49/mo: 5M pts/mo, all 18+ books, 60s delay; Pro $149/mo: 25M pts/mo, 30s delay, +EV/opening-closing lines, Ultra $399/mo: 100M pts/mo, real-time WebSocket push, 90-day history, 10 req/sec, High-volume: Super $649/Mega $999/Max $2,499 mo; Enterprise custom

What data it provides

  • Live betting odds/lines (moneyline, spread, totals) from 18+ sportsbooks incl. DraftKings, FanDuel, BetMGM
  • Live scores and play-by-play / game status updates
  • Game schedules and event info across 30+ leagues (NFL, NBA, MLB, NHL, MLS/soccer, tennis, UFC)
  • Prediction-market odds incl. Kalshi and Polymarket alongside sportsbook lines
  • Opening/closing lines and +EV calculations (Pro tier and above)
  • Team and player statistics; player props on higher tiers

Features

  • Sub-second WebSocket push (wss://therundown.io/api/v2/ws/markets) on Ultra+, with affiliate_id book filtering
  • Tiered data delay: real-time (Ultra) down to 5-min (free); REST polling on lower tiers
  • Usage metered in 'data points' (market x book = 1 pt); 20k/day free up to 2.5B/mo on Max
  • Rate limits scale by tier: 1 req/sec (free) to 50 req/sec (Max)
  • Odds history depth scales by tier: 7-day (Starter) to unlimited (Max)
  • Reference endpoints (/sports, /affiliates, /markets) free; MCP server for AI-agent integration

Links

Use it in a bot

Other sports data sources

Listed, not endorsed. Pricing and capabilities change without notice — check the provider's own documentation before you depend on anything here. Browse the full data resources directory or the strategy database.
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