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ChartLyrics vs Sirv

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

APIChartLyricsDEAD0SirvNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSunknownyes
HTTPSnoyes
Card requirednono
Commercial useunclearunclear
Data licenseUnlicensed lyrics dataUnverified
Free tierWas: unlimitedFree tier — API key required
Rate limit—Unpublished
In directory since2026-05-022026-07-05
operationalpartialdownno data

ChartLyrics vs Sirv: common questions

Which is more reliable, ChartLyrics or Sirv?

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

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

Can I call ChartLyrics and Sirv from the browser?

Only Sirv is browser-friendly — it returns CORS headers over HTTPS. ChartLyrics needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are ChartLyrics and Sirv free for commercial use?

ChartLyrics 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.