HelloSalut vs ViaCep
Same instrument, two spec sheets — measured, not claimed.
HelloSalut vs ViaCep: common questions
Which is more reliable, HelloSalut or ViaCep?
On our scheduled checks, ViaCep leads on measured uptime — HelloSalut at 95.1% 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, HelloSalut or ViaCep?
ViaCep has the lower median latency in our checks — HelloSalut responds in 2362 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 HelloSalut and ViaCep need an API key?
Neither needs a paid key — HelloSalut 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 HelloSalut and ViaCep from the browser?
Yes — both HelloSalut and ViaCep send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are HelloSalut and ViaCep free for commercial use?
HelloSalut 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.