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World Trading Data vs Yahoo Finance Chart

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

APIWorld Trading DataNEW—Yahoo Finance ChartNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key may be required for productionFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

World Trading Data vs Yahoo Finance Chart: common questions

Which is more reliable, World Trading Data or Yahoo Finance Chart?

On our scheduled checks, Yahoo Finance Chart leads on measured uptime — World Trading Data at —% versus Yahoo Finance Chart 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 World Trading Data and Yahoo Finance Chart need an API key?

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

Can I call World Trading Data and Yahoo Finance Chart from the browser?

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

Are World Trading Data and Yahoo Finance Chart free for commercial use?

World Trading Data has unclear commercial terms, and Yahoo Finance Chart 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.