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Parkleitsystem API vs ViaCep

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

APIParkleitsystem APINEW—ViaCepNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Parkleitsystem API vs ViaCep: common questions

Which is more reliable, Parkleitsystem API or ViaCep?

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

Neither needs a paid key — Parkleitsystem API is callable with no signup, and ViaCep is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Parkleitsystem API and ViaCep from the browser?

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

Are Parkleitsystem API and ViaCep free for commercial use?

Parkleitsystem 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.