PaperAgent — Send Physical Mail for Gemini CLI

dev.paperagent/letters

Mail one-off USPS letters from ChatGPT or Claude after you approve the preview and price. US only.

client:Gemini CLI transport:streamable-http tools:8

Install PaperAgent — Send Physical Mail in Gemini CLI

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

{
  "mcpServers": {
    "letters": {
      "httpUrl": "https://paperagent.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