PennyRail Transaction Router for Windsurf

io.github.clay-swartz/pennyrail

Find and quote agent capabilities, then pay only the selected x402 execution URL.

client:Windsurf transport:streamable-http

Install PennyRail Transaction Router in Windsurf

~/.codeium/windsurf/mcp_config.json · windows: %USERPROFILE%\.codeium\windsurf\mcp_config.json

{
  "mcpServers": {
    "pennyrail": {
      "serverUrl": "https://pennyrail.vercel.app/api/mcp"
    }
  }
}

Global only — Windsurf has no per-project MCP config. Refresh Cascade after saving. Windsurf docs