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Mavrin Divergence Signals API
x402
Mavrin Divergence Signals API is a paid API for AI agents from api.mavrin.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).
Returns cross-venue arbitrage and divergence signals between Kalshi and Polymarket prediction markets, including edge, confidence, price, and side for each signal.
Price / call$0.05
Success—
StatusUnknown
How this service works
Kalshi and Polymarket US research data for agents. Free market search and coverage, odds from 0.004 USDC, and x402 payments on Base.
Output
Returns a JSON object with a count and an array of signal objects. Each signal includes a unix timestamp, edge size, signal kind (e.g. cross-venue-lock), yes/no side, position size, price in USDC, category, basis risk (nullable), market ID, and a confidence score between 0 and 1.
Example use cases
Sports market arbitrage scanning
“Show me the most recent divergence signals for sports prediction markets on Mavrin — up to 100 results — and flag any with an edge above 0.01.”
Crypto prediction market monitoring
“Check Mavrin for any cross-venue divergence signals in crypto prediction markets since 48 hours ago, and tell me the confidence and edge on each one.”
Real-time arbitrage alert for agents
“Scan Mavrin's divergence signals right now with no category filter and a limit of 500 — I want to see every cross-venue lock opportunity currently available across all markets.”
Technical details
Endpoint
GEThttps://api.mavrin.app/api/v1/divergence/signalsWhen to prefer
Choose this endpoint when you need structured, machine-readable arbitrage or divergence signals between Kalshi and Polymarket, rather than raw market data or odds. It is ideal for agents that need to identify mispricing, execute cross-venue strategies, or monitor prediction market inefficiencies programmatically. Use it over general market search endpoints when you specifically want pre-computed edge and confidence metrics per signal.
Side effects
- Invalid or missing 'type' or 'method' in input object returns a 400 validation error
- 'limit' exceeding 500 is silently clamped or rejected
- 'since' timestamp in wrong format returns no results or an error
- No signals found for the requested category or time range returns an empty signals array
- x402 payment failure results in a 402 response requiring USDC payment on Base
- Rate limiting or quota exceeded returns a 429 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 1,
"signals": [
{
"ts": 1787960682.01,
"edge": 0.006,
"kind": "cross-venue-lock",
"side": "yes",
"size": 3,
"price": 0.994,
"category": "sports",
"basisRisk": null,
"market_id": "mlb-champ-2026-yankees",
"confidence": 0.3
}
]
}
}Tags
x402
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