MLB Records and Stats vs Oddsmagnet

This entry documents MLB's own `statsapi.mlb.com` backend -- the same undocumented, keyless JSON API that powers MLB.com and its official apps -- covering teams, rosters, schedules, box scores, standings, and decades of historical stats, reverse-engineered and mirrored in the community `mlb-data-api-docs` reference. There's no official support or SLA since MLB never published it as a public product, but it has stayed stable and free for years. A live probe of the real host returned data with no API key and a wildcard `Access-Control-Allow-Origin`, resolving `cors: unknown -> yes` and correcting `https: false -> true` -- the stored `false` was stale, the host is https-only.

Oddsmagnet is a UK-focused odds-data provider covering football, basketball, baseball and more from 17+ bookmakers (William Hill, Betway, Unibet, and others), aimed at arbitrage comparison and machine-learning models trained on historical odds movement. The free tier only exposes odds aggregated to a daily level; paid Historical Odds Data and Betting Odds API tiers unlock full granularity and low-latency live feeds. A live probe of the real `api.oddsmagnet.com` backend confirmed it's a genuine, live AWS API Gateway service distinct from the bot-protected marketing domain, and reconfirmed a wildcard `Access-Control-Allow-Origin` on every request, keeping `cors: yes`.