Card Mailer

Connect Remote server

claude mcp add --transport http card-mailer https://cards.onmax.me/mcp/claude

{
  "mcpServers": {
    "card-mailer": {
      "url": "https://cards.onmax.me/mcp/claude"
    }
  }
}

{
  "servers": {
    "card-mailer": {
      "type": "http",
      "url": "https://cards.onmax.me/mcp/claude"
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://cards.onmax.me/mcp/claude

Tools 6 found in our last check

• import_address_list

  Imports US postal recipients from pasted text, CSV or XLSX into a saved list. Checks required fields and US address format; USPS verification runs only when configured, and usps_checked reports whether it ran. Format checks do not confirm deliverability. Returns list_id, ready c…

• fix_address

  Corrects or removes a recipient in a saved list by row number. Supplied fields replace stored values; omitted fields remain unchanged. An unreadable row needs name, line1, city, state and zip. Rechecks required fields and US address format, plus USPS verification when configured…

• design_card

  Creates or edits a printed 5x7 postcard with a front greeting, optional photo, back message and sign-off. Downloads an attached photo or public HTTPS photo URL to cards.onmax.me. Without a photo, the greeting appears on a solid color. An existing design_id edits that design; omi…

• quote_mailing

  Calculates the unit price including First-Class postage, total for ready recipients, send date and estimated arrival window for a saved US recipient list. A saved design_id includes that design's current front and back preview. Null design_id produces a price-only quote with pre…

• create_mailing

  Creates an unpaid order for the ready recipients in a saved list and the selected saved card design. Returns a cards.onmax.me link for the user to review recipients and pay. Nothing is printed, mailed or charged until the user pays on that page. Rows needing fixes are excluded.…

• get_mailing_status

  Returns a Card Mailer order's payment, printing, mailing or delivery status, send date, estimated arrival and per-recipient counts. The mailing_id is the last part of the order link. Does not change the order or track other USPS mail.

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