Rules of Acquisition vs ChartLyrics

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

Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms
P95 · ms
Authnonenone
CORSyesunknown
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnlicensed lyrics data
Free tierFree — limits not publishedWas: unlimited
Rate limitUnpublished
In directory since2026-07-052026-05-02
operationalpartialdownno data

Rules of Acquisition vs ChartLyrics: common questions

Which is more reliable, Rules of Acquisition 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 Rules of Acquisition and ChartLyrics need an API key?

Neither needs a paid key — Rules of Acquisition is callable with no signup, and ChartLyrics is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Rules of Acquisition and ChartLyrics from the browser?

Only Rules of Acquisition 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 Rules of Acquisition and ChartLyrics free for commercial use?

Rules of Acquisition 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.