shipapis
StarSubmit an APISubmit API

PostStack vs Disify

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

APIPostStackNEW—DisifyNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
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

PostStack vs Disify: common questions

Which is more reliable, PostStack or Disify?

On our scheduled checks, Disify leads on measured uptime — PostStack at —% versus Disify 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 PostStack and Disify need an API key?

Disify needs no key, while PostStack requires a free API key. If you want to start calling without signup, reach for Disify first.

Can I call PostStack and Disify from the browser?

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

Are PostStack and Disify free for commercial use?

PostStack has unclear commercial terms, and Disify 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.