Japanese baseball (NPB) win probability oracle. Returns home_win_prob (0-1), predicted_winner (team name), confidence (low/mid/high), and starting pitcher matchup for each game on the given date. XGBoost model trained on 28,968 historical NPB games (2008-2025), incorporating Asian Handicap data, ballpark factors, and pitcher-batter splits. Use cases: betting bots, fantasy baseball agents, sportsbook arbitrage detection, Japanese sports analytics. Input: :date (YYYY-MM-DD, JST). Output: JSON {date, league, model_version, generated_at, games[]}. Pay-per-call $0.01 USDC on Solana mainnet.

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