MusicBrainz vs Sirv

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

Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms
P95 · ms
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licenseCore data CC0; some supplementary data CC BY-NC-SA 3.0Unverified
Free tierFree — no key requiredFree tier — API key required
Rate limit~1 request/second per IP; descriptive User-Agent requiredUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

MusicBrainz vs Sirv: common questions

Which is more reliable, MusicBrainz or Sirv?

On our scheduled checks, Sirv leads on measured uptime — MusicBrainz 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 MusicBrainz and Sirv need an API key?

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

Can I call MusicBrainz and Sirv from the browser?

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

MusicBrainz allows commercial use on its free tier, 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.