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mcp/harbor
Claude Desktop

Card Mailer for Claude Desktop

me.onmax/card-mailer

Print and mail 5x7 holiday and thank-you photo cards to a US address list. $2.49/card incl. postage.

client:Claude Desktop transport:streamable-http tools:6

Install Card Mailer in Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json · windows: %APPDATA%\Claude\claude_desktop_config.json 

{
  "mcpServers": {
    "card-mailer": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://cards.onmax.me/mcp"
      ]
    }
  }
}

Claude Desktop has no remote transport in its config file, so this bridges through mcp-remote. Restart the app after saving. Claude Desktop docs

What Claude Desktop can do once it is connected

Card Mailer in other clients

Card Mailer MCP server