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MarketAux vs RestoSignals

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

APIMarketAuxDEAD0RestoSignalsREACHABLE100
Uptime · 30d
Uptime · 90d0.0%100%
Uptime · 30d0.0%100%
P50 · ms—748
P95 · ms—748
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified
Free tierFree tier — token required
Rate limit100 requests/day on free plan
In directory since2026-07-052026-10-19
operationalpartialdownno data

MarketAux vs RestoSignals: common questions

Which is more reliable, MarketAux or RestoSignals?

On our scheduled checks, RestoSignals leads on measured uptime — MarketAux at 0.0% versus RestoSignals at 100% 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 MarketAux and RestoSignals need an API key?

Both ask you to authenticate — MarketAux uses an API key and RestoSignals uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call MarketAux and RestoSignals from the browser?

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

Are MarketAux and RestoSignals free for commercial use?

MarketAux has unclear commercial terms, and RestoSignals 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.