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Exchangerate.dev vs World Trading Data

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

APIExchangerate.devNEW—World Trading DataNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key may be required for production
Rate limit12 req/window · 11 remaining · resets 1783515720Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Exchangerate.dev vs World Trading Data: common questions

Which is more reliable, Exchangerate.dev or World Trading Data?

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

Exchangerate.dev needs no key, while World Trading Data requires a free API key. If you want to start calling without signup, reach for Exchangerate.dev first.

Can I call Exchangerate.dev and World Trading Data from the browser?

Neither sends browser-friendly CORS headers reliably, so call Exchangerate.dev and World Trading Data from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Exchangerate.dev and World Trading Data free for commercial use?

Exchangerate.dev has unclear commercial terms, and World Trading Data 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.