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Acoustid API vs Keyvalue

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

APIAcoustid APINEW—KeyvalueNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key may be required for productionFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Acoustid API vs Keyvalue: common questions

Which is more reliable, Acoustid API or Keyvalue?

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

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

Can I call Acoustid API and Keyvalue from the browser?

Yes — both Acoustid API and Keyvalue 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 Acoustid API and Keyvalue free for commercial use?

Acoustid API has unclear commercial terms, and Keyvalue 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.