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x402 Prediction Market Divergence
x402
x402 Prediction Market Divergence is a paid API for AI agents from agentx402pay.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-20).
Finds prediction-market questions priced differently on Polymarket vs. Kalshi, surfacing cross-platform probability divergences as arbitrage signals
Price / call$0.05
Success—
StatusUnknown
How this service works
Find prediction-market questions priced differently on Polymarket vs. Kalshi — a cross-platform divergence signal built from data no single-platform competitor has
Output
A list of matched prediction market questions where Polymarket and Kalshi show divergent pricing, including each platform's current probability/price, the percentage-point divergence, and market identifiers for both platforms. Filtered by optional keyword and minimum divergence threshold, up to the requested result count.
Example use cases
Cross-platform arbitrage opportunity scanner
“Show me the top 20 prediction market questions where Kalshi and Polymarket prices diverge by at least 15 percentage points — I want to see where the two platforms disagree the most.”
Sector-specific divergence research
“Find prediction markets about cryptocurrency outcomes that are priced differently on Polymarket versus Kalshi, showing any divergence greater than 5 percentage points.”
Monitoring narrative vs regulated market agreement
“Pull up to 25 questions where Polymarket and Kalshi show different probabilities on political or economic events — I want to see if the regulated market is pricing things differently than the open market.”
Technical details
Endpoint
GEThttps://agentx402pay.com/api/prediction-arb?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need cross-platform prediction market comparison that requires data from both Polymarket and Kalshi simultaneously — no single-platform API provides this divergence signal. Prefer this over querying each platform's API separately when you want pre-computed, ranked divergence scores and want to avoid the complexity of matching questions across platforms yourself.
Side effects
- No matching markets found for the given keyword filter — returns empty list
- minDivergencePct or limit parameters out of range — may return error or be clamped to bounds
- One or both platform data feeds temporarily unavailable — partial or stale results
- Question text matching may miss semantically equivalent but differently worded markets across platforms
- Rate limiting or payment failure results in 402 or 429 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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