io.github.coopergwrenn/postals-mcp MCP Server

io.github.coopergwrenn/postals-mcp

Repository Registry

What is the io.github.coopergwrenn/postals-mcp MCP server?

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

How to install io.github.coopergwrenn/postals-mcp

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

POSTALS_API_KEY
required
secret
Your Handwrytten API key (v1.0) or Postals API key (v1.1+).
POSTALS_SENDER_NAME
Default sender full name for return address.
POSTALS_SENDER_ADDRESS
Default sender street address.
POSTALS_SENDER_CITY
Default sender city.
POSTALS_SENDER_STATE
Default sender 2-letter US state code.
POSTALS_SENDER_ZIP
Default sender 5-digit ZIP (or 5+4 format).
POSTALS_DEFAULT_CARD_IMAGE
Default card front image URL (HTTPS, PNG or JPEG, landscape 7x5 preferred).
POSTALS_HANDWRITING_STYLE
Default handwriting font. Default: Joyful Jennifer.
POSTALS_DAILY_LIMIT
Max cards per day (safety net). Default: 50.
POSTALS_TEST_MODE
Set to 'true' for test mode (validates inputs, no cards actually sent).
CLOUDFLARE_ACCOUNT_ID
Optional. Enables AI message generation via Cloudflare Workers AI.
CLOUDFLARE_API_TOKEN
secret
Optional. Required together with CLOUDFLARE_ACCOUNT_ID for AI message generation.

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "postals-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "postals-mcp"
      ],
      "env": {
        "POSTALS_API_KEY": "<YOUR_POSTALS_API_KEY>",
        "POSTALS_SENDER_NAME": "<YOUR_POSTALS_SENDER_NAME>",
        "POSTALS_SENDER_ADDRESS": "<YOUR_POSTALS_SENDER_ADDRESS>",
        "POSTALS_SENDER_CITY": "<YOUR_POSTALS_SENDER_CITY>",
        "POSTALS_SENDER_STATE": "<YOUR_POSTALS_SENDER_STATE>",
        "POSTALS_SENDER_ZIP": "<YOUR_POSTALS_SENDER_ZIP>",
        "POSTALS_DEFAULT_CARD_IMAGE": "<YOUR_POSTALS_DEFAULT_CARD_IMAGE>",
        "POSTALS_HANDWRITING_STYLE": "<YOUR_POSTALS_HANDWRITING_STYLE>",
        "POSTALS_DAILY_LIMIT": "<YOUR_POSTALS_DAILY_LIMIT>",
        "POSTALS_TEST_MODE": "<YOUR_POSTALS_TEST_MODE>",
        "CLOUDFLARE_ACCOUNT_ID": "<YOUR_CLOUDFLARE_ACCOUNT_ID>",
        "CLOUDFLARE_API_TOKEN": "<YOUR_CLOUDFLARE_API_TOKEN>"
      }
    }
  }
}

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