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Acoustid API vs Rendex

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

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

Acoustid API vs Rendex: common questions

Which is more reliable, Acoustid API or Rendex?

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

Both ask you to authenticate — Acoustid API uses an API key and Rendex 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 Acoustid API and Rendex from the browser?

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

Acoustid API has unclear commercial terms, and Rendex 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.