RIFFCADE for Gemini CLI

com.riffcade/arcade

Free, ad-free open-source browser games that open and play right inside the chat.

client:Gemini CLI transport:streamable-http tools:4

Install RIFFCADE in Gemini CLI

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

{
  "mcpServers": {
    "arcade": {
      "httpUrl": "https://mcp.riffcade.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