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Game Brain vs Scryfall

Same instrument, two spec sheets — measured, not claimed.

APIGame BrainNEW—ScryfallNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedCard data free to use; MTG content © Wizards of the Coast (see docs)
Free tierFree tier — API key requiredFree, no API key required
Rate limitUnpublished~10 requests/second; docs ask for 50-100 ms between requests
In directory since2026-07-052026-07-05
operationalpartialdownno data

Game Brain vs Scryfall: common questions

Which is more reliable, Game Brain or Scryfall?

On our scheduled checks, Scryfall leads on measured uptime — Game Brain at —% versus Scryfall at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Game Brain and Scryfall need an API key?

Scryfall needs no key, while Game Brain requires a free API key. If you want to start calling without signup, reach for Scryfall first.

Can I call Game Brain and Scryfall from the browser?

Yes — both Game Brain and Scryfall send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Game Brain and Scryfall free for commercial use?

Game Brain has unclear commercial terms, and Scryfall has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.