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Sirv vs ChartLyrics

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

APISirvUNMONITORED—ChartLyricsDEAD0
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesunknown
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnlicensed lyrics data
Free tierFree tier — API key requiredWas: unlimited
Rate limitUnpublished—
In directory since2026-07-052026-05-02
operationalpartialdownno data

Sirv vs ChartLyrics: common questions

Which is more reliable, Sirv or ChartLyrics?

Only ChartLyrics is on our probe schedule so far (—% uptime over 90 days). The other is catalogued but not yet live-checked, so we can't compare measured reliability head-to-head — check the uncovered API's own status page for now.

Do Sirv and ChartLyrics 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 Sirv and ChartLyrics 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 Sirv and ChartLyrics free for commercial use?

Sirv has unclear commercial terms, and ChartLyrics 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.