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x402-factory Prediction Market Resolution Lookup
x402
x402-factory Prediction Market Resolution Lookup is a paid API for AI agents from x402-factory.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-12).
Returns the final resolved outcome of a prediction market question by slug, aggregated across Kalshi and Polymarket, including the resolution timestamp and the 24h-before probability.
Price / call$0.01
Success—
StatusUnknown
How this service works
Paid data APIs for AI agents: prediction-market analytics, weather intelligence, weather×market edge signals, and SEC/gov data. Paid endpoints use the x402 protocol (HTTP 402 + USDC on Base): call without payment to receive requirements, retry with an X-PAYMENT header. Machine-readable catalog: /llms.txt. Per-endpoint docs: /docs/{id}.
Output
A JSON object containing the aggregated resolved outcome (YES/NO), per-venue breakdowns from Kalshi and Polymarket with individual outcomes and resolution timestamps, the authoritative source URL, the overall resolution timestamp, and the market probability 24 hours before resolution. Metadata includes docs link, data sources, version, and request ID.
Example use cases
Verify Fed rate decision market outcome
“Did the prediction market for the June 2026 FOMC rate hike resolve YES or NO? Pull the resolution data for slug 'fed-rate-hike-june-2026' from both Kalshi and Polymarket.”
Check election market final result
“What was the final resolved outcome for the 2026 midterm election prediction market with slug 'us-house-majority-2026'? I need the outcome per venue and when it resolved.”
Audit pre-resolution probability for backtesting
“For the prediction market slug 'recession-q2-2026', what was the market probability 24 hours before it resolved, and what did it ultimately resolve to?”
Technical details
Endpoint
GEThttps://x402-factory.com/v1/resolution/%7Bslug%7DWhen to prefer
Use this endpoint when you need the definitive, multi-venue resolution result for a specific named prediction market event and want cross-platform verification (Kalshi + Polymarket) in a single call. Prefer this over scraping individual venue APIs when you need the 24h-before probability alongside the final outcome for backtesting, auditing, or research. Best for agents that already know the market slug and need a quick, authoritative resolution fact-check.
Side effects
- Unknown or invalid slug returns 404 or empty data
- Market not yet resolved returns partial or null resolution fields
- Payment not included returns HTTP 402 with USDC/Base payment requirements
- Stale data if freshness is marked static and market data has not been updated
- Slug format mismatch causes lookup failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"outcome": "NO",
"per_venue": [
{
"venue": "kalshi",
"outcome": "NO",
"resolved_at": "2026-06-17T20:00:00Z"
},
{
"venue": "polymarket",
"outcome": "NO",
"resolved_at": "2026-06-17T20:00:00Z"
}
],
"source_url": "https://www.federalreserve.gov/monetarypolicy/fomccalendars.htm",
"resolved_at": "2026-06-17T20:00:00Z",
"final_p_24h_before": 0.142
},
"meta": {
"docs": "https://x402-factory.com/docs/probability.resolution",
"sources": [
"kalshi",
"polymarket"
],
"version": "1.0.0",
"endpoint": "/v1/resolution/{slug}",
"data_mode": "live",
"freshness": "static",
"request_id": "req_00000000",
"generated_at": "2026-08-21T03:58:58.157Z"
}
}
}Tags
x402
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