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Registrum API vs Stytch

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

APIRegistrum APINEW—StytchNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Registrum API vs Stytch: common questions

Which is more reliable, Registrum API or Stytch?

On our scheduled checks, Stytch leads on measured uptime — Registrum API at —% versus Stytch 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 Registrum API and Stytch need an API key?

Both ask you to authenticate — Registrum API uses an API key and Stytch uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call Registrum API and Stytch from the browser?

Neither sends browser-friendly CORS headers reliably, so call Registrum API and Stytch from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Registrum API and Stytch free for commercial use?

Registrum API has unclear commercial terms, and Stytch 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.