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Card Mailer

MCP server · hosted · v1.0.0 · me.onmax/card-mailer
Online · tested 1h agoNEW · 2h agoSeen in the registry 1h ago

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

Website ↗How to connect ↓

What it does

Card Mailer is an MCP server, a connector that lets an AI assistant use it as a tool. It is hosted: an assistant connects to it over the internet, nothing to install.

No capability identified yet from its description.

Facts come from the Official MCP Registry, as declared by the publisher. Capabilities are matched automatically (low confidence) and are not a test of the tool.

At a glance

Hosted (remote)YES
Local installNO
Version1.0.0
PriceNot in the registry
First seen22 Oct 2026
Last checked1h ago

How to connect

As declared in the Official MCP Registry · hosted endpoint tested by Electra Index 1h ago (live check)

Hosted endpoint

  • https://cards.onmax.me/mcp streamable-http

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

MCP settings (Claude Desktop, Cursor and other MCP clients)

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

Live check

Electra Index connected to the hosted endpoint 1h ago

ONLINE Card Mailer answered an MCP connection on 22 Oct 2026 and introduced itself as card-mailer 1.0.0 (MCP protocol 2025-06-18).

6 tools offered to AI assistants

  • import_address_list · Use this when the user wants to mail printed cards to people at US postal addresses and gives the addresses as pasted text, a CSV, or an .xlsx spreadsheet. Reads names and addresses, checks each against USPS data, and saves them as a recipi
  • fix_address · Use this to correct or remove one recipient in a list from import_address_list, by row number. Given fields replace the stored values and omitted fields keep theirs; if the row's problem says it could not be read, pass name, line1, city, st
  • design_card · Use this to create or edit the printed 5x7 postcard: a greeting on the front over or under the photo, and a message and sign-off on the back. Pass the photo the user attached as photo, or a public https image URL as photo_url; the image is
  • quote_mailing · Use this when the user asks what mailing a card to an imported list costs or when it will arrive. Returns the price per card (First-Class postage included), the total for the ready recipients, the send date and the expected arrival window.
  • create_mailing · Use this when the user has seen the card and the quote and says they want to order. Creates an unpaid order for the ready recipients in list_id with design_id and returns a link to cards.onmax.me, where the user reviews the recipients and p
  • get_mailing_status · Use this when the user asks whether a Card Mailer order was paid, printed, mailed or delivered. Takes the mailing_id returned by create_mailing (also the last part of the order link). Returns the status, send date, expected arrival and per-

What "online" means: the server answered an MCP connection at the time of the check. It is not a guarantee of security, quality or continuous uptime. How we test: we open an MCP session and ask for the tool list, as an AI assistant would. We never run a tool and never send a key. Checked every few days. Method

Is this your server? Monitoring Pro: a check every 30 minutes and an email within the hour when it stops answering. $9.99/month.

Facts & evidence

Each fact shows where it was seen and when.
FactValueEvidenceSourceLast confirmed
Hosted endpointhttps://cards.onmax.me/mcpDECLAREDSRC-001 Official MCP Registry1h ago
Local install (package)noDECLAREDSRC-001 Official MCP Registry1h ago
Remote access (hosted)yesDECLAREDSRC-001 Official MCP Registry1h ago
Websitehttps://cards.onmax.meDECLAREDSRC-001 Official MCP Registry1h ago
Registry statusactiveDECLAREDSRC-001 Official MCP Registry1h ago
Version1.0.0DECLAREDSRC-001 Official MCP Registry1h ago
MCP serveryesDECLAREDSRC-001 Official MCP Registry1h ago

Change history

  • NEW22 Oct 2026
    first seen in the index

Is this page accurate?

Flag it and our robot re-checks the official source. Reports never change a score.

Questions about Card Mailer

How do I connect Card Mailer?

Use the hosted endpoint https://cards.onmax.me/mcp in your assistant's MCP settings. The exact settings are in "How to connect" above, as declared in the Official MCP Registry.

What tools does Card Mailer offer?

When Electra Index connected on 22 Oct 2026, it listed 6 tools: import_address_list, fix_address, design_card, quote_mailing, create_mailing, get_mailing_status. The full list is in "Live check" above.

Is Card Mailer online?

Yes. Its hosted endpoint answered an MCP connection from Electra Index 1h ago.