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Pendo Feedback API vs ViaCep

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

APIPendo Feedback APIDYING67ViaCepHEALTHY87
Uptime · 30d
Uptime · 90d53.9%98.0%
Uptime · 30d21.7%98.3%
P50 · ms517651
P95 · ms8122277
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Pendo Feedback API vs ViaCep: common questions

Which is more reliable, Pendo Feedback API or ViaCep?

On our scheduled checks, ViaCep leads on measured uptime — Pendo Feedback API at 53.9% versus ViaCep 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.

Which is faster, Pendo Feedback API or ViaCep?

Pendo Feedback API has the lower median latency in our checks — Pendo Feedback API responds in 517 ms versus ViaCep at 651 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Pendo Feedback API and ViaCep need an API key?

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

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

Only ViaCep 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 Pendo Feedback API and ViaCep free for commercial use?

Pendo Feedback API has unclear commercial terms, and ViaCep 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.