Atlas / MCP servers / cryppadotta / Scryfall

ScryfallSAFE

mcp/cryppadotta/scryfall

A mcp server for interacting with the Scryfall Magic The Gathering API

Verdict
SAFE
Grade
B
Trust score
89 /100
Exposed tools
7 7r · 0w · 0d
Transport
sse · stdio
License
—
Stars
36
01

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

A Model Context Protocol (MCP) server for interacting with the Scryfall API. It provides tools to look up Magic: The Gathering card details, card rulings, and price information.

Features

  • search_cards

Perform a text-based search on Scryfall. Returns a list of matching cards.

  • get_card_by_id

Retrieve a card directly via its Scryfall UUID.

  • get_card_by_name

Retrieve a card by exact English name.

  • random_card

Get a random card from the entire Scryfall database.

  • get_rulings

Retrieve official rulings for a card, which may clarify card interactions or rules.

  • get_prices_by_id

Retrieve current pricing information (USD, USD foil, EUR, TIX) for a given card by Scryfall ID.

  • get_prices_by_name

Retrieve current pricing information (USD, USD foil, EUR, TIX) for a given card by exact name.

Usage

The server can be run in two modes:

  1. Standard stdio mode (default)
  2. Server-Sent Events (SSE) mode with HTTP endpoints

Using NPX

If you have Node.js installed locally:

# Stdio mode
npx scryfall-mcp-server

# SSE mode
npx scryfall-mcp-server --sse

Connecting to the Server

Stdio Mode

Your application or environment (like Claude Desktop) can communicate directly via stdio with the server.

SSE Mode

When running in SSE mode (with --sse), you can connect using the MCP CLI:

npx @wong2/mcp-cli --sse http://localhost:3000/sse

The server will be available at:

  • SSE endpoint: http://localhost:3000/sse
  • Message endpoint: http://localhost:3000/messages

Integration in claudedesktopconfig.json

Example snippet for stdio mode:

{
"mcpServers": {
"scryfall": {
"command": "docker",
"args": ["run", "-i", "--rm", "mcp/scryfall"]
}
}
}

Or with npx:

{
"mcpServers": {
"scryfall": {
Read from source at commit 02c2ed916d49OBSERVED · 2026-10-08
02

Connect

Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control.

claude-code
claude mcp add scryfall-mcp-server -- npx -y [email protected]
claude-desktop
{
  "mcpServers": {
    "scryfall-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ]
    }
  }
}
03

Exposed tools (7)

7 read · 0 write · 0 destructive.

ToolRiskDescription
get_card_by_idreadRetrieve a card by its Scryfall ID (a 36-char UUID). Returns the card data in JSON.
get_card_by_namereadRetrieve a card by its exact English name, e.g.
get_prices_by_idreadRetrieve price information for a card by its Scryfall ID. Returns JSON with usd, usd_foil, eur, tix, etc.
get_prices_by_namereadRetrieve price information for a card by its exact name. Returns JSON with usd, usd_foil, eur, tix, etc.
get_rulingsreadRetrieve official rulings for a specified card by Scryfall ID or Oracle ID.
random_cardreadRetrieve a random Magic card from Scryfall. Returns JSON data for that random card.
search_cardsreadSearch for MTG cards by a text query, e.g.
04

Trust audit

SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.

LayerWhat it checksResult
L0Provenance & inventoryPASS
L1Static analysis of the codePASS
L2Instruction surface (what it tells the agent)PASS
L3Class-specific surfacePASS
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
none-observed
Network
declared (5 observation(s))
Shell
none-observed
Dependencies
not all pinned
Secrets in source
none-found

Findings (2)

LOWInventory / provenance · inv.no_license · CWE-1104
Why it matters. no LICENSE file and no repo licence
Fix. add a licence
LOWSupply chain · supply.unpinned · CWE-829, CWE-1357
package.json
node-fetch, yargs, express, @types/node, @types/node-fetch, @types/yargs, @types/express, shx
Why it matters. 10 dependency range(s) float
Fix. pin exact versions or ship a lockfile

Gates applied: no_behavioural_pass, no_license.

Audited 2026-10-08 · audit v0.4.1 · source sha 02c2ed916d49full audit observations/trust-audit/mcp-server/cryppadotta__scryfall.json · Report an issue / request a re-scan
05

Audit history

Every audit this server has had. A grade with a past is a grade somebody is still checking.

DateSourceVerdictGradeScoreChange
2026-10-0802c2ed916d49SAFEB89first audit
06

Questions

What is the Scryfall MCP server?

A mcp server for interacting with the Scryfall Magic The Gathering API

What tools does Scryfall expose?

7 in total: 7 read-only, 0 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.

Is Scryfall safe to connect to an agent?

The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B.

What credentials does Scryfall need?

No credential environment variables were found in its source, so it appears to need none.

How does Scryfall run?

It speaks sse and stdio, so it runs as a local process your client starts. It is published on npm as scryfall-mcp-server at 0.1.0.

How current is this page?

The grade is for one exact copy of the source (02c2ed916d49), read on 2026-10-08. The repository is watched and re-audited when it changes.

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