Scryfall vs PotterDB
Same instrument, two spec sheets — measured, not claimed.
Scryfall vs PotterDB: common questions
Which is more reliable, Scryfall or PotterDB?
On our scheduled checks, PotterDB leads on measured uptime — Scryfall at —% versus PotterDB 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 Scryfall and PotterDB need an API key?
Neither needs a paid key — Scryfall is callable with no signup, and PotterDB is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Scryfall and PotterDB from the browser?
Yes — both Scryfall and PotterDB 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 Scryfall and PotterDB free for commercial use?
Scryfall has unclear commercial terms, and PotterDB 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.