CycleCalcs Astronomy for Gemini CLI

com.cyclecalcs/astronomy

Astronomy: sun, moon, planet, eclipse, twilight and star position calculations.

client:Gemini CLI transport:streamable-http tools:11

Install CycleCalcs Astronomy in Gemini CLI

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

{
  "mcpServers": {
    "astronomy": {
      "httpUrl": "https://www.cyclecalcs.com/mcp"
    }
  }
}

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