Sports & Fitness — entry 030 of 34
TheRundown
TheRundown provides real-time and pre-match sports odds normalized into one schema across 30+ leagues and 18+ regulated/offshore sportsbooks and exchanges (DraftKings, FanDuel, BetMGM, Pinnacle, Kalshi, Polymarket, and more), with WebSocket streaming for sub-second updates and both a legacy flat-line (V1) and newer market-based (V2) data model. The Free plan gives 20,000 data points/day across 3 sportsbooks with no card required; paid Starter/Pro/Ultra tiers add full book coverage and faster refresh, and reference data (`/sports`, `/affiliates`, `/markets`) stays free on every plan. A live probe of the real `therundown.io/api/v2` backend confirmed the reference endpoint is keyless (200) while an events endpoint returns a genuine 401 without a key, and both echoed a wildcard `Access-Control-Allow-Origin`, reconfirming `auth: API Key` and `cors: yes`.
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<a href="https://greatapis.com/api/therundown/"><img src="https://greatapis.com/badge/therundown.svg" alt="Scored 75 on greatapis.com"></a>Auth quickstart
- Sign up with the provider to get an API key.
- Send it on every request as a header
Authorization: <key> - The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.