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Registrum API vs Stytch

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

APIRegistrum APIHEALTHY96StytchHEALTHY92
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms246577
P95 · ms15531314
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?

Both are neck-and-neck — Registrum API and Stytch each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Registrum API or Stytch?

Registrum API has the lower median latency in our checks — Registrum API responds in 246 ms versus Stytch at 577 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

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.