Crosswire — Polymarket & Kalshi Arbitrage

Last 30 days

Uptime

100%

Response time

270 ms typical, 270 ms slowest 5%

Last check

9 h ago

Next check

any minute now

How to call it

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "crosswire-polymarket-kalshi-arbitrage": {
      "type": "http",
      "url": "https://api.crosswire-api.com/mcp"
    }
  }
}

2 tools

• check_resolution_risk

  Pre-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 -timin

• list_covered_events

  Free discovery of everything check_resolution_risk can audit across both inventories — 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 c

Security scan

• No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

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