Crosswire — Polymarket & Kalshi Arbitrage

Web APIs Streamable HTTP v0.6.2

Cross-venue Polymarket+Kalshi arbitrage: resolution mismatch, void risk & settlement divergence.

View source ↗ Website ↗ Generate config for multiple servers More servers

Install

Pin version unavailable — hosted endpoints aren’t versioned

Streamable HTTP
https://api.crosswire-api.com/mcp

Setup by client

Pick your client — the config below is generated for this server (hosted endpoint). Copy respects the “Pin version” switch above.

Remote (hosted) endpoint

https://api.crosswire-api.com/mcp

Claude Desktop: Settings → Connectors → Add custom connector, paste this URL.

Format verified against the official Claude Desktop docs ↗.

terminal

claude mcp add --transport http crosswire-polymarket-kalshi-arbitrage https://api.crosswire-api.com/mcp

Format verified against the official Claude Code docs ↗.

.cursor/mcp.json (hosted endpoint)

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

Format verified against the official Cursor docs ↗.

.vscode/mcp.json (hosted endpoint)

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

Format verified against the official VS Code docs ↗.

mcp_config.json (hosted endpoint)

{
  "mcpServers": {
    "crosswire-polymarket-kalshi-arbitrage": {
      "serverUrl": "https://api.crosswire-api.com/mcp"
    }
  }
}

Format verified against the official Windsurf docs ↗.

GitHub

⭐ 1 stars · 最近更新于 130 天前 · MIT license

About this server

Crosswire — MCP server Pre trade resolution risk firewall for cross venue prediction market arbitrage. Before executing a two leg Polymarket + Kalshi position, Crosswire flags resolution mismatch , void risk , and settlement divergence — void rule asymmetry, settlement scope differences (90 minute v…

Summary from the project README — github.com/NicolasDuarte04/crosswire-mcp

Distributed as Streamable HTTP, listed under Web APIs. Review our MCP security guide before granting access to real data.

Frequently asked questions

What does the Crosswire — Polymarket & Kalshi Arbitrage MCP server do?

How do I install Crosswire — Polymarket & Kalshi Arbitrage?

Run the install command shown above, then paste the config for your client (Claude Desktop, Claude Code, Cursor, VS Code or Windsurf) into its MCP settings and restart the client.

Is Crosswire — Polymarket & Kalshi Arbitrage free to use?

The MCP server itself is free to install. The source is public on https://github.com/NicolasDuarte04/crosswire-mcp. Any third-party service it calls may require its own API key and account.

Which clients support Crosswire — Polymarket & Kalshi Arbitrage?

Any MCP-compatible client can use it, including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf and custom agents.

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