Falcon Shield for Gemini CLI

io.github.ygfalcon/falcon-shield

Pre-sign Solana tx guard for agents: ALLOW/WARN/BLOCK verdict, x402 USDC pay-per-call.

client:Gemini CLI transport:streamable-http tools:1

Install Falcon Shield in Gemini CLI

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

{
  "mcpServers": {
    "falcon-shield": {
      "httpUrl": "https://falcon-shield.falcon-sol.workers.dev/mcp"
    }
  }
}

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