Crosswire — Polymarket & Kalshi Arbitrage
Cross-venue Polymarket+Kalshi arbitrage: resolution mismatch, void risk & settlement divergence.
Connect it
Settings → Connectors → Add custom connector
URL: https://api.crosswire-api.com/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://api.crosswire-api.com/mcp{
"mcpServers": {
"crosswire-polymarket-kalshi-arbitrage": {
"url": "https://api.crosswire-api.com/mcp"
}
}
}claude mcp add --transport http crosswire-polymarket-kalshi-arbitrage https://api.crosswire-api.com/mcp{
"servers": {
"crosswire-polymarket-kalshi-arbitrage": {
"type": "http",
"url": "https://api.crosswire-api.com/mcp"
}
}
}2 tools, verified live
check_resolution_riskread-onlyPre-trade safety check for cross-venue event markets (crypto oracle-divergence pairs, metered; World Cup football, free). Flags resolution mismatches, void-rule divergence, scope differences (e.g. 90-minute vs extra-time; matched vs differing strike), settlement-source and -timing gaps, stale data, and thin liquidity between the two Polymarket and Kalshi legs BEFORE you execute both. Returns a mac
list_covered_eventsread-onlyFree discovery of everything check_resolution_risk can audit across both inventories â the free World Cup football pairs and the metered crypto oracle-divergence pairs (the 'crypto:' namespace is the paid surface: $0.02 USDC per call after 3 free calls/day). Returns the covered canonical events, their per-outcome pair ids (â¦#home / #draw / #away for football), the Polymarket conditionIds and K
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