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x402-factory World Series Winner Probability (Evergreen)
x402
x402-factory World Series Winner Probability (Evergreen) is a paid API for AI agents from x402-factory.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-18).
Returns the current consensus probability for who will win the next World Series, auto-rolling to the next season's market upon resolution.
Price / call$0.02
Success—
StatusUnknown
How this service works
Live probability: Who wins the next World Series? — Stable evergreen URL for a recurring question: Who wins the next World Series? Auto-resolves to the current market instance and rolls forward on resolution, so the answer is always about the next occurrence. Response adds current_slug and rolls_to_next_at to the standard probability shape.
Output
Returns a JSON object with: aggregate consensus probability (0-1) for the leading team or market, per-venue breakdown from Kalshi and Polymarket (implied probability, 24h volume, liquidity score), divergence between venues, last 1-hour probability move, resolution date, resolution criteria summary, the current market slug, and a rolls_to_next_at timestamp indicating when this evergreen URL will advance to the next World Series market.
Example use cases
Pre-season World Series betting research
“What do prediction markets currently say about who will win the next World Series? I want to see the consensus probability and how Kalshi and Polymarket compare.”
Breaking news impact on World Series odds
“A big trade just happened in MLB — can you check how the World Series winner probability has moved in the last hour on prediction markets?”
Automated sports odds monitoring
“Every morning I want to know the latest World Series winner probability and whether there's a meaningful divergence between Kalshi and Polymarket — pull that for me now.”
Technical details
Endpoint
GEThttps://x402-factory.com/v1/evergreen/world-series-winner?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a stable, evergreen URL for World Series winner odds that automatically points to the current season's market without needing to update slugs or track resolution events. Prefer this over raw Kalshi/Polymarket APIs when you want a single aggregated probability across venues with built-in roll-forward behavior and divergence signals.
Side effects
- No active market found if MLB season is off-cycle or market hasn't opened yet
- Stale data if underlying Kalshi/Polymarket markets have low liquidity
- Payment failure (402) if USDC balance is insufficient
- Resolution lag where rolls_to_next_at has passed but new market hasn't been instantiated yet
- Divergence field may be 0 if only one venue has an active market
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"slug": "dodgers-win-world-series-2026",
"topic": "world-series-winner",
"category": "sports",
"question": "Will the Dodgers win the 2026 World Series?",
"per_venue": [
{
"venue": "kalshi",
"implied_p": 0.2228,
"market_id": "KXDODGERSWINWORL",
"volume_24h_usd": 276650.13,
"liquidity_score": 0.947
},
{
"venue": "polymarket",
"implied_p": 0.2536,
"market_id": "dodgers-win-world-series-2026",
"volume_24h_usd": 93103.56,
"liquidity_score": 0.926
}
],
"divergence": 0.0308,
"probability": 0.2359,
"current_slug": "dodgers-win-world-series-2026",
"last_move_1h": 0.0029,
"topic_question": "Who wins the next World Series?",
"resolution_date": "2026-11-01",
"rolls_to_next_at": "2026-11-01",
"resolution_criteria_summary": "Resolves YES if Los Angeles wins the 2026 World Series."
},
"meta": {
"docs": "https://x402-factory.com/docs/probability.evergreen.world-series-winner",
"sources": [
"kalshi",
"polymarket"
],
"version": "1.0.0",
"endpoint": "/v1/evergreen/world-series-winner",
"data_mode": "live",
"freshness": "realtime",
"request_id": "req_00000000",
"generated_at": "2026-08-21T03:58:58.100Z"
}
}
}Tags
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