Football from 16 leagues incl. Premier League and MLS: lineups, shot maps, xG and odds.
StrikerAPI is a free Sports & Fitness API that requires apiKey authentication, is served over HTTPS and supports CORS, so it can be called from the browser.
Full API reference for StrikerAPI. 19 soccer data endpoints with parameters, example requests, and response shapes.
Details from strikerapi.com.

Unified API suite · now live
Geocode an address, validate an email, track a flight or pull stock data with one account, one dashboard and one API key.
Query sports data, including teams, players, games, scores and statistics
Real-time sports data: odds, scores, stats & prediction markets, 30+ leagues, 18+ sportsbooks
Football score/schedule, news api, tv channels, stats, history, display standing e.g. epl, la liga
The StrikerAPI is provided by StrikerAPI (strikerapi.com). Full API reference for StrikerAPI. 19 soccer data endpoints with parameters, example requests, and response shapes.
Yes. The StrikerAPI is listed in the Sports & Fitness category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Yes. The StrikerAPI uses apiKey authentication, so you need to register for credentials before making requests.
Yes. The StrikerAPI supports CORS, so front-end JavaScript can call it directly.
Yes. The StrikerAPI is served over HTTPS, so it's safe to use in production.