User Agent Lookup API vs Yes No
Same instrument, two spec sheets — measured, not claimed.
User Agent Lookup API vs Yes No: common questions
Which is more reliable, User Agent Lookup API or Yes No?
On our scheduled checks, Yes No leads on measured uptime — User Agent Lookup API at —% versus Yes No 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 User Agent Lookup API and Yes No need an API key?
Neither needs a paid key — User Agent Lookup API is callable with no signup, and Yes No is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call User Agent Lookup API and Yes No from the browser?
Only Yes No is browser-friendly — it returns CORS headers over HTTPS. User Agent Lookup API needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are User Agent Lookup API and Yes No free for commercial use?
User Agent Lookup API has unclear commercial terms, and Yes No 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.