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AgentToll Cross-Platform Prediction Market Scanner
x402
AgentToll Cross-Platform Prediction Market Scanner is a paid API for AI agents from agenttoll.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).
Scans Polymarket and Kalshi simultaneously for semantically similar prediction market questions on the same topic, surfacing arbitrage or pricing divergence opportunities.
Price / call$0.1
Success—
StatusUnknown
How this service works
108+ receipt-backed x402 work products for AI agents. Clear prices, spend caps, buyer metadata, and structured results over Base USDC.
Output
Returns a JSON object with the original query, data sources used (Polymarket Gamma API and Kalshi public Trade API), a list of arbitrage 'opportunities' (market pairs with significant net edge), and 'candidate_matches' (semantically similar market pairs with their respective prices and similarity scores).
Example use cases
Bitcoin price prediction arbitrage hunt
“Search Polymarket and Kalshi for prediction markets related to 'bitcoin price above 100k' and find any matching markets where there's at least a 0.08 net edge between the two platforms — show me the top 10 opportunities.”
Election market cross-platform comparison
“Scan both Polymarket and Kalshi for markets about the 2026 midterm elections, return up to 15 matches with a minimum similarity of 0.7, and highlight any pricing discrepancies I could exploit.”
AI regulation market discovery
“Look across Polymarket and Kalshi for any prediction markets mentioning 'AI regulation' or 'artificial intelligence legislation', find matching questions with at least 0.5 similarity, and list the candidate matches with their prices on each platform.”
Technical details
Endpoint
POSThttps://agenttoll.dev/paid/markets/cross-platform-scanWhen to prefer
Use this endpoint when you need to identify semantically equivalent prediction markets listed on both Polymarket and Kalshi simultaneously, especially to find arbitrage opportunities or pricing divergences. Prefer this over checking each platform individually when the goal is cross-platform comparison or finding net-edge trading opportunities. Most useful for agents automating prediction market strategies that require parity analysis across the two largest U.S.-accessible prediction market platforms.
Side effects
- Empty opportunities array if no cross-platform matches meet the similarity or net edge thresholds
- Query too short (under 2 characters) returns validation error
- Rate limiting or API unavailability from Polymarket or Kalshi upstream sources may return partial results
- max_matches exceeding 50 or polymarket_limit below 100 returns schema validation error
- Payment failure via x402 protocol returns 402 status before any market data is returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"query": "bitcoin",
"source": [
"Polymarket Gamma API",
"Kalshi public Trade API"
],
"opportunities": [],
"candidate_matches": []
}
}Tags
x402
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