The answer
Crosswire — Polymarket & Kalshi Arbitrage
Top verified match: it matches your intent, it is the official vendor server.
fresh · published 89d ago · verified 2026-08-08tested · static-verifiedsigned passport ✓score 47/100
Runners-up
- Kalshi MCP47/100 · weaker match
- io.github.9crusher/mcp-server-kalshi41/100 · weaker match
- Kalshi Prediction Markets41/100 · weaker match