preflight402 for Gemini CLI

io.ironshell/preflight402

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

client:Gemini CLI transport:streamable-http

Install preflight402 in Gemini CLI

~/.gemini/settings.json · windows: %USERPROFILE%\.gemini\settings.json

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

Gemini expands $VAR and ${VAR} inside env values, so a secret can live in your shell rather than this file. Gemini CLI docs