US Street Address vs VATlayer
Same instrument, two spec sheets — measured, not claimed.
US Street Address vs VATlayer: common questions
Which is more reliable, US Street Address or VATlayer?
On our scheduled checks, VATlayer leads on measured uptime — US Street Address at —% versus VATlayer 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 US Street Address and VATlayer need an API key?
Both ask you to authenticate — US Street Address uses an API key and VATlayer uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.
Can I call US Street Address and VATlayer from the browser?
Only US Street Address is browser-friendly — it returns CORS headers over HTTPS. VATlayer needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are US Street Address and VATlayer free for commercial use?
US Street Address has unclear commercial terms, and VATlayer 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.