Documentation/Guides
Leagues and coverage | Baseball Data API
Leagues and coverageWhich leagues are held, and how fully.
/v1/leagues lists every league with its slug, seasons, and how many of its games carry a line score, box score, play by play, pitch data and weather. The slug goes in every league address, such as /v1/kbo/games.
The same figures, country by country, are on the coverage pages. The minor leagues are held as team seasons, not game by game, so they have no game endpoints.