A Claude Magic: The Gathering connector for your own cards

Updated November 9, 2026

Reliquary works as a Claude connector for Magic: The Gathering: you add it to Claude as a custom connector, sign in, and Claude can answer from your own collection instead of from memory.

What Claude can do with it

You ask	Claude, through Reliquary
"Where's my Rhystic Study?"	Names the place the copy is in first, then the decks that claim it
"What do I need to buy for this list?"	Imports the pasted list, claims what you own, lists what is missing with prices
"What can I build tonight?"	Ranks the decks you have in Reliquary by how much of each list you have
"It's built"	Moves the deck's own claimed copies into it, once you say so; borrowed ones stay put

Answers about a deck say when a copy is shared with another deck, and where it physically is, and count its proxies. Deleting a deck or removing cards waits for your yes.

Adding it

Claude's help centre says custom connectors over remote MCP are available on every Claude plan, Free included, and that a free account takes one custom connector. On Team and Enterprise plans an Owner of the organisation adds it. Reliquary's address and the steps are on Connect your assistant.

A Reliquary skill is also offered there for download. It carries the same rules as the connector's instructions, so Claude claims what you own before telling you what to buy.

What it is not

Reliquary is not made by Anthropic. You add it yourself, by its address, as a custom connector.

Questions

Does Claude need my login for Reliquary?

No. Claude opens Reliquary's sign-in page, you sign in there and allow access, and Claude is given access to your cards, not your sign-in.

Does the connector answer card questions without a collection?

Card search and card details work, but the point is your own cards: import your collection first, or start with a decklist.

How do I stop it?

Disconnect Claude on your account's Assistant page in Reliquary, or remove the connector in Claude.

Connect your assistantFree, with Google or GitHub. No card.

Sources

Claude Help Center, Getting started with custom connectors using remote MCP, read November 9, 2026
Model Context Protocol, What is the Model Context Protocol (MCP)?, read November 9, 2026

Related

MTG collection MCP server: your cards in any assistantReliquary is an MCP server for your Magic: The Gathering collection. Connect an assistant and ask where a card is, what a deck misses, what to buy.

What can I build tonight? Your decks ranked by the cards you ownAsk your assistant what you can build tonight: Reliquary ranks the decks you keep in it by how much of each list your cards cover, and what each still lacks.

MTG collection for Cursor / Claude Code: your cards beside your codeAdd Reliquary to Cursor or Claude Code as a remote MCP server and work with your Magic: The Gathering collection, decks and exports from the editor or terminal.

How to paste a decklist into ReliquaryPaste a decklist into Reliquary from another deck site: the line forms it reads, how it finds the commander and the sideboard, and what it leaves out.