Base Tx Preflight for VS Code

com.madebydevx.preflight/preflight

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

client:VS Code transport:streamable-http tools:2

Install Base Tx Preflight in VS Code

.vscode/mcp.json

{
  "servers": {
    "preflight": {
      "type": "http",
      "url": "https://preflight.madebydevx.com/mcp"
    }
  }
}

Requires agent mode. MCP: Open User Configuration puts the same block in every workspace. VS Code docs