staffSign vs US Street Address
Same instrument, two spec sheets — measured, not claimed.
staffSign vs US Street Address: common questions
Which is more reliable, staffSign or US Street Address?
Both are neck-and-neck — staffSign and US Street Address each measure 0.0% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.
Do staffSign and US Street Address need an API key?
Both ask you to authenticate — staffSign uses an API key and US Street Address 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 staffSign and US Street Address from the browser?
Only US Street Address is browser-friendly — it returns CORS headers over HTTPS. staffSign needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are staffSign and US Street Address free for commercial use?
staffSign has unclear commercial terms, and US Street Address 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.