MCP.Market

Magic Envelope MCP server

online · 100% uptime
by magic-envelope.com·com.magic-envelope/invitations·v1.0.0
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Create and send invitations and letters in a sealed envelope, one personal link per guest.

B81/100grade B
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Safety scan
B81/100

full report

Adoption
Growing

0 stars

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If you have run it, two minutes of your experience saves the next person an afternoon.

Magic Envelope tools (6, 3 write)

write = sends, deletes, buys or posts
  • create_letterwrite actionFree

    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".

  • delete_letterwrite actionFree

    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_catalogFree

    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.

  • get_letterFree

    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).

  • rate_appFree

    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.

  • update_letterwrite actionFree

    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.

Public scan report

scanner v0.1.10 · 2026-10-14 · same rubric, same numbers if you re-run it

1 high
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 600ms20/20
  • Tool poisoning6 tool descriptions checked15/15
  • Auth qualityopen endpoint exposes 3 write-action tools with no auth3/15
  • Maintenancelast push 7 days ago15/15
  • Maintainer identityendpoint served from the registry-verified namespace domain8/10

Findings (1)

  • highWrite-action tools reachable without authenticationauth.open-write
Overall 81/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Magic Envelope compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
81/100
higher than 62% of 48,255 servers
Tools
6
the typical server has 7
Tools that change things
50%
typical: 0%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote server answers 100%
Response time
164 ms
faster than 70% of 30,031 servers

What its tools let an agent do: 3 read · 1 create · 1 change · 1 delete

Install Magic Envelope in Claude Code, Cursor or VS Code

claude mcp add --transport http invitations https://magic-envelope.com/api/mcp
Add to Cursor

What the publisher says

From the Magic Envelope repository's README, as published. We do not edit it. Read it on GitHub

✉ Magic Envelope

Free invitations and letters: birthdays, weddings, parties, dinners, letters… Pick a ready-made template or build one from typed blocks. Send a link and the guest opens a sealed envelope.

Not an editor. Everything is typed and modular.

Run

pnpm install
pnpm dev          # http://localhost:3000

Locally, without any keys, published cards and uploaded images are saved under .data/. Only AI images need a key.

For agents

Everything the app does is available without a browser:

  • MCP — https://magic-envelope.com/api/mcp (tools: getcatalog, createletter, getletter, updateletter)
  • REST — POST /api/v1/letters, GET|PATCH /api/v1/letters/:id (Authorization: Bearer ), GET /api/v1/catalog
  • Specs — /api/v1/openapi.json, /api/v1/schema, /llms.txt, docs at /developers

The REST and MCP adapters share one service layer (src/lib/api.server.ts) and validate with the same Zod schemas as the editor.

Native apps (Capacitor 8)

The iOS/Android apps are thin shells around the hosted web app (it needs API routes, so no static export). capacitor.config.ts points the WebView at CAPSERVERURL (default https://magic-envelope.com); native-shell/ is only the offline page.

pnpm dev:lan                                   # dev server reachable from your phone
CAP_SERVER_URL=http://192.168.1.20:3000 pnpm cap:android   # or cap:ios (opens Android Studio / Xcode)

src/lib/native.ts is the single bridge: each function uses the Capacitor plugin in the app and the web API in the browser.

Environment

Architecture

src/lib/model.ts        Zod schemas: Card, 15 Block types, kinds, themes, languages
src/lib/blocks.ts       block registry (icons, palette, factories) + 24 templates (8 kinds × 3)
src/lib/ui.ts           app UI copy (always English)
src/lib/styles.ts       letter styles = design-system tokens (fonts, colors, background, frame, control shape, envelope) + per-letter overrides
src/lib/i18n.ts         letter languages es · en · fr · pt · it · de (guest-facing copy + presets)
src/lib/fields.ts       field kinds (phone, email, url, date…): one validator for editor + renderer
src/lib/craft.ts        seal shapes/marks & envelope geometry/palettes (shared by app and OG image)
src/lib/color.ts        opaque shading helpers
src/lib/themes.ts       6 themes (parchment, midnight, rose, forest, sky, ink)
src/lib/actions.ts      calendar (.ics / Google), maps, RSVP deep links, music embeds
src/lib/drafts.ts       drafts in localStorage (no account needed)
src/lib/store.server.ts Vercel Blob storage, or .data/ in local dev

src/components/sketch.tsx         Excalidraw-style rough.js frames and buttons
src/components/card/blocks.tsx    renderer per block type
src/components/craft.tsx          wax s

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Magic Envelope: common questions

Is Magic Envelope MCP server safe?
Mostly: it is graded B (81/100). Read the Magic Envelope safety report
How do I install Magic Envelope?
It runs remotely at magic-envelope.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Magic Envelope need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Magic Envelope maintained?
The last commit was 28 days ago (2026-10-07). The latest release is v1.0.0.
Is Magic Envelope up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
How does Magic Envelope compare with other MCP servers?
safety score 81/100 (higher than 62% of 48,255 servers); tools 6 (the typical server has 7); tools that change things 50% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.