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OpenPLZ API vs Pendo Feedback API

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

APIOpenPLZ APINEW—Pendo Feedback APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

OpenPLZ API vs Pendo Feedback API: common questions

Which is more reliable, OpenPLZ API or Pendo Feedback API?

On our scheduled checks, Pendo Feedback API leads on measured uptime — OpenPLZ API at —% versus Pendo Feedback API 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 OpenPLZ API and Pendo Feedback API need an API key?

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

Can I call OpenPLZ API and Pendo Feedback API from the browser?

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

Are OpenPLZ API and Pendo Feedback API free for commercial use?

OpenPLZ API has unclear commercial terms, and Pendo Feedback API 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.