mcpbeat Sign in

Card Mailer MCP Server

answering

Card Mailer is answering right now. Last checked 9 min ago. It exposes 6 tools.

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

Uptime history 4 days of history
4 days agonow
100.0%
Uptime 24h
182 of 182 checks
6
Tools
read from the server
248 ms
Response time
average over 24h
open, no key
Access
streamable-http

What changed 10

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 23 October 2026. No other catalogue keeps this.

25 Oct a tool description was rewritten2 times that day quote_mailing
25 Oct a tool changed the parameters it asks for2 times that day quote_mailing
23 Oct 6 tools changed the parameters they ask for create_mailing, design_card, fix_address and 3 more
and 2 more, back to 23 October 2026

Nothing serious here today

Today is the operative word: we check Card Mailer every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 9 min ago.

run in your terminal
claude mcp add card-mailer --transport http https://cards.onmax.me/mcp
Settings → Connectors → Add custom connector, then paste this address
https://cards.onmax.me/mcp
~/.codex/config.toml
[mcp_servers.card-mailer]
url = "https://cards.onmax.me/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "card-mailer": {
      "url": "https://cards.onmax.me/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "card-mailer": {
      "type": "http",
      "url": "https://cards.onmax.me/mcp"
    }
  }
}

This server publishes 1 more address. The block above uses the one we reach during checks; the full list is under Endpoints below, and the author may intend a particular one for your client.

Available tools 6

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

mailing
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 pays. Nothing is printed, mailed or charged until the user pays on that page. Recipients that still need fixing are left out. Each call creates a separate order link, so call it once per order. Optional sender is printed as the US return address.
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-recipient counts. Does not change the order or track other USPS mail.
design
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 downloaded and stored on cards.onmax.me. Without a photo the front is the greeting on a solid color. Pass design_id to edit a design: given fields replace the old values and omitted fields keep them. Use the message the user wrote or approved, up to 500 characters. Places the user's photo and text in a print template; does not generate images.
fix
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, state and zip together. Re-checks the address with USPS data. remove: true takes the recipient out of the mailing. Rows in a list that belongs to a paid order cannot be changed.
import
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 recipient list. Returns a list_id, how many rows are ready, and the problem for each row that needs fixing. Up to 300 recipients; pass list_id to append rows to an existing list. US addresses only. Not for e-cards or email, addresses outside the US, or advertising mail to purchased or rented lists.
quote
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. For a card preview with the price, first create or edit it with design_card, then pass that exact design_id here. This shows the current saved front and back above the quote. design_id is required: use null only when the user requested a price-only quote without a design. Never claim a preview is shown when preview_included is false. If the cards must arrive by a date, pass arrive_by; the result gives the latest safe send date and whether that date can be met. Does not create an order or charge anything.

Endpoints

URLTransportStateLatencyChecked
https://cards.onmax.me/mcp streamable-http answering 129 ms 9 min ago
https://cards.onmax.me/mcp/claude streamable-http answering 159 ms 9 min ago

Alternatives to Card Mailer

same job, measured the same way
Paper Plane Post
by paperplanepost

Turn a photo into a real printed postcard, mailed anywhere. Returns a link to finish and pay.

1 tools answering
No Errands Cards
by noerrands

Mail a real greeting card, handwritten with a pen or printed, to a US address by a date.

answering
Sendpaper
by ryan-tish

Your agent sends real postcards and letters. You approve; we print and mail.

6 tools answering
PostAgent
by interpretai

Print & mail PDF/HTML/Markdown/text/DOCX/images to US addresses; pay per call in x402 USDC on Base.

14 tools answering
No Errands Prints
by noerrands

Order photo prints, canvas, T-shirts and mugs from photos, made by a lab and posted in the US.

answering
Holiday Photo Plus 2
by holiday-forever

Holiday photo MCP server: list and fetch personal holiday photos inline in Claude chat.

2 tools answering
Holiday Forever
by holiday-forever

Interactive photo gallery widget for a single Airbnb listing with price, rating, and link.

1 tools answering
Lob MCP by usefulapi
by usefulapi

Verify US & international addresses and send physical mail (postcards, letters, checks) via Lob.

18 tools answering

Card Mailer — questions

Answers built from our own checks of this server.

What can Card Mailer do?
It exposes 6 tools, read directly from the server on our last check. Among them: create_mailing, design_card, fix_address, get_mailing_status, import_address_list, quote_mailing. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Card Mailer working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 182 of 182 checks got a reply (100.0%), average response time 248 ms. The bar chart above shows every period we have measured.
How do I connect Card Mailer?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Card Mailer need an API key?
No. Card Mailer completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 6 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Card Mailer?
It answers our handshake in 248 ms on average, which is faster than 67% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.