shipapis
StarSubmit an APISubmit API

MarketAux vs The Guardian

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

APIMarketAuxDEAD0The GuardianHEALTHY89
Uptime · 30d
Uptime · 90d0.0%98.0%
Uptime · 30d0.0%98.3%
P50 · ms—742
P95 · ms—2726
AuthapiKeyapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — token requiredFree developer key — registration required
Rate limit100 requests/day on free plan5000 calls/day (developer tier)
In directory since2026-07-052026-07-05
operationalpartialdownno data

MarketAux vs The Guardian: common questions

Which is more reliable, MarketAux or The Guardian?

On our scheduled checks, The Guardian leads on measured uptime — MarketAux at 0.0% versus The Guardian at 98.0% 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 The Guardian need an API key?

Both ask you to authenticate — MarketAux uses an API key and The Guardian 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 The Guardian from the browser?

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

Are MarketAux and The Guardian free for commercial use?

MarketAux has unclear commercial terms, and The Guardian 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.