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Exchangerate.dev vs PredScope

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

APIExchangerate.devNEW—PredScopeNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limit12 req/window · 11 remaining · resets 1783515720Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Exchangerate.dev vs PredScope: common questions

Which is more reliable, Exchangerate.dev or PredScope?

On our scheduled checks, PredScope leads on measured uptime — Exchangerate.dev at —% versus PredScope 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 Exchangerate.dev and PredScope need an API key?

Neither needs a paid key — Exchangerate.dev is callable with no signup, and PredScope is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Exchangerate.dev and PredScope from the browser?

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

Are Exchangerate.dev and PredScope free for commercial use?

Exchangerate.dev has unclear commercial terms, and PredScope 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.