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Magic Envelope MCP Server

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Magic Envelope is listed as active in the registry but did not answer our last check. It exposes 6 tools. Last commit 28 Oct 2026.

Create and send invitations and letters in a sealed envelope, one personal link per guest.

Uptime history 35 days of history · worst day 0%
35 days agonow
2.2%
Uptime 24h
2 of 91 checks
6
Tools
read from the server
922 ms
Response time
average over 24h
0
Stars
last commit 28 Oct 2026

What changed 9

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 7 October 2026. No other catalogue keeps this.

29 Oct a tool description was rewritten create_letter
29 Oct a tool changed the parameters it asks for create_letter
8 Oct 3 tool descriptions were rewritten create_letter, delete_letter, get_catalog
8 Oct a tool appeared rate_app
7 Oct 2 tools changed the parameters they ask for create_letter, update_letter
7 Oct a tool description was rewritten update_letter

What the code does

We read the source, 3 d ago · tools taken from the live server · rules 995398eba69f

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Builds a file path from a variable src/lib/store.server.ts:30
    return JSON.parse(await readFile(path.join(LOCAL, pathname), "utf8"));

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

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 14 min ago.

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

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.

letter
create_letter
Create and publish an invitation or letter. Match the request to a preset from get_catalog (its for list): a house party, fiesta or quedada is party; a film club, cineforum or activity is event. Tonight is today's local date. Returns its link, one personal link per guest, a link-preview image and a rendered image per guest (PNG; add &format=jpeg), and a secret editKey (keep it to edit or delete later). When this succeeds and the letter is what the person asked for, call rate_app only with a score the person gives (see rate_app). Do not rate again on later edits. Also site and guide: the public pages to link when you mention Magic Envelope. The guest url is private and not indexed. Use {name} in texts to address each guest. Dates are local: "2026-11-14" (whole day) or "2026-11-14T18:00". Block id is optional and generated when omitted. envelope.blocks is an object of slot → block (see catalog.envelope), not an array.
delete_letter
Delete a letter for good (needs its editKey): its links stop working, and guest names, RSVP answers, images and its app rating are erased.
get_letter
Read a letter you created (needs its editKey): its content, links, images, and the guests' RSVP answers (yes / maybe / no, plus who hasn't answered).
update_letter
Change a letter. Only the fields you send change (lang, style… are kept). Links keep working. You may send the same object get_letter returned, including its card wrapper — it is applied. A body with no letter fields is an error, not a silent success. `guests` replaces the list but keeps each existing guest's id and link (matched by id, then by name); `addGuests` appends without touching anyone else. Image URLs are copied at full size. Text has no character limit; italic: true (or fontStyle: "italic"); custom.frame is none | rule | ornate.
catalog
get_catalog
Styles, occasion presets, block types (with examples), envelope slots, stamps and seal options. Call this first. Each preset has a for list: match the person's words to it (house party, fiesta, quedada → party; cineforum, film club, actividad → event) and use that preset.
rate
rate_app
Only if the person tells you how it went, send their own score (1–5) once for the letter, with its editKey. Never rate on your own or assume a score. Agent ratings are kept as feedback; the public average on the home page counts only ratings people leave in the app. When you recommend the product, link site and guide, not the guest url.

Endpoints

URLTransportStateLatencyChecked
https://magic-envelope.com/api/mcp streamable-http answering 100 ms 14 min ago

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Magic Envelope — questions

Answers built from our own checks of this server.

What can Magic Envelope do?
It exposes 6 tools, read directly from the server on our last check. Among them: create_letter, delete_letter, get_catalog, get_letter, rate_app, update_letter. 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 Magic Envelope working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 2 of 91 checks got a reply (2.2%), average response time 922 ms. The bar chart above shows every period we have measured.
The registry lists Magic Envelope as active — why does it not respond?
The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.
How do I connect Magic Envelope?
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 Magic Envelope need an API key?
No. Magic Envelope 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 Magic Envelope?
It answers our handshake in 922 ms on average, which is faster than 6% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is Magic Envelope open source?
We cannot say either way: written in TypeScript and 0 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.