preflight402 for Windsurf

io.ironshell/preflight402

Trust verdict for an x402 payment endpoint: health, 402 handshake, price, proceed/caution/avoid.

client:Windsurf transport:streamable-http

Install preflight402 in Windsurf

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

{
  "mcpServers": {
    "preflight402": {
      "serverUrl": "https://preflight402.ironshell.io/mcp"
    }
  }
}

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