Perimeter Watch for Gemini CLI

io.github.entradox/perimeter-watch-scanner

Passive domain-perimeter checks — cert expiry, subdomain takeover, lookalikes — as agent tools

client:Gemini CLI transport:streamable-http tools:6

Install Perimeter Watch in Gemini CLI

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

{
  "mcpServers": {
    "perimeter-watch-scanner": {
      "httpUrl": "https://perimeter-watch-api-production.up.railway.app/mcp/"
    }
  }
}

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