shipapis
StarSubmit an APISubmit API

Marketstack vs Yahoo Finance Chart

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

APIMarketstackNEW—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 — key may be requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Marketstack vs Yahoo Finance Chart: common questions

Which is more reliable, Marketstack or Yahoo Finance Chart?

On our scheduled checks, Yahoo Finance Chart leads on measured uptime — Marketstack 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 Marketstack and Yahoo Finance Chart need an API key?

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

Can I call Marketstack and Yahoo Finance Chart from the browser?

Neither sends browser-friendly CORS headers reliably, so call Marketstack 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 Marketstack and Yahoo Finance Chart free for commercial use?

Marketstack 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.