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Simkl vs Sirv

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

APISimklNEW—SirvNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseSimkl terms — user-contributed dataUnverified
Free tierFree read routes; client_id for searchFree tier — API key required
Rate limit1 req/s documentedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Simkl vs Sirv: common questions

Which is more reliable, Simkl or Sirv?

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

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

Can I call Simkl and Sirv from the browser?

Yes — both Simkl and Sirv 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 Simkl and Sirv free for commercial use?

Simkl has unclear commercial terms, and Sirv 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.