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NPB Win Probability Oracle
x402
NPB Win Probability Oracle is a paid API for AI agents from oracle-api-production-766f.up.railway.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Returns XGBoost-predicted win probabilities, confidence ratings, and pitcher matchups for all NPB games on a given date
Price / call$0.01
Success—
StatusUnknown
How this service works
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.
Output
A JSON object containing the date, league, model_version, generated_at timestamp, and a games array — each game entry includes home_win_prob (float 0-1), predicted_winner (team name), confidence (low/mid/high), and the starting pitcher matchup for that game.
Example use cases
Example prompt
“What are the win probabilities and predicted winners for all NPB games on 2025-07-10, including the starting pitcher matchups and confidence levels?”
Technical details
Endpoint
POSThttps://oracle-api-production-766f.up.railway.app/v1/npb/games/:date/win-probWhen to prefer
Use this endpoint when you need machine-learning-derived win probability scores specifically for NPB (Nippon Professional Baseball) games, incorporating ballpark factors, Asian Handicap data, and pitcher-batter splits from 28,968 historical games. Prefer this over generic sports data APIs when you need confidence-rated predictions suitable for betting bots, fantasy sports agents, or sportsbook arbitrage detection in the Japanese baseball context.
Side effects
- No games scheduled on the requested date — returns empty games array
- Invalid date format (not YYYY-MM-DD) — returns 400 error
- Date outside model coverage range — returns error or empty result
- Payment failure on Solana mainnet — request blocked before model inference
- Future dates beyond schedule availability — limited or no pitcher data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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