heade.rs for Gemini CLI

rs.heade/lookup

Look up any domain, IP address or AS number: hosting, DNS, registration, email, TLS and headers.

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

Install heade.rs in Gemini CLI

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

{
  "mcpServers": {
    "lookup": {
      "httpUrl": "https://heade.rs/mcp"
    }
  }
}

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