Postals MCP Server: Install & Setup

Install Postals in Claude Code

Claude Code

claude mcp add postals -e POSTALS_API_KEY=... -- npx -y postals-mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "postals": {
      "command": "npx",
      "args": [
        "-y",
        "postals-mcp"
      ],
      "env": {
        "POSTALS_API_KEY": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Postals MCP server do?

Send physical handwritten postcards from any AI agent. Real pen & ink, USPS, $4.99/card.

Is the Postals MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Postals run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Postals to Claude Code?

Run: claude mcp add postals -e POSTALS_API_KEY=... -- npx -y postals-mcp

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