Magic Envelope

com.magic-envelope/invitations

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

Yes, your AI can use this right now.Answered a live MCP handshake in 454 ms with no sign-in needed and exposes 6 tools.

Connect it

Settings → Connectors → Add custom connector
URL: https://magic-envelope.com/api/mcp

6 tools, verified live

Pulled straight from the server with tools/list on 2026-10-17.
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.

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 la

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 anyon

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.

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.

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Try “Notion”, “Stripe”, “create invoice”, “browser”