Base Tx Preflight for Cursor

com.madebydevx.preflight/preflight

Simulate a Base tx before signing: revert reason, gas limit, full fee in ETH/USD. Paid x402.

client:Cursor transport:streamable-http tools:2

Install Base Tx Preflight in Cursor

~/.cursor/mcp.json · windows: %USERPROFILE%\.cursor\mcp.json

{
  "mcpServers": {
    "preflight": {
      "url": "https://preflight.madebydevx.com/mcp"
    }
  }
}

Use .cursor/mcp.json in a project root instead to scope it to that project. Cursor merges both. Cursor docs