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mcp/harbor
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Card Mailer MCP

v1.0.0

me.onmax/card-mailer

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

transport:streamable-http tools:6
Website

Target client

run in your project directory 

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

setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok ChatGPT Claude.ai LangChain

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

import_address_list Mutating

import address list

fix_address

fix address

design_card

design card

quote_mailing

quote mailing

create_mailing Mutating

create mailing

get_mailing_status Read-only

get mailing status

All 6 tools, one page each

1 resource you attach as context

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. Check the server's own documentation before granting access.