AgentDeals vs Userstack
Same instrument, two spec sheets — measured, not claimed.
AgentDeals vs Userstack: common questions
Which is more reliable, AgentDeals or Userstack?
Both are neck-and-neck — AgentDeals and Userstack each measure 99.02% 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.
Which is faster, AgentDeals or Userstack?
AgentDeals has the lower median latency in our checks — AgentDeals responds in 243 ms versus Userstack at 443 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 AgentDeals and Userstack need an API key?
AgentDeals needs no key, while Userstack requires a free API key. If you want to start calling without signup, reach for AgentDeals first.
Can I call AgentDeals and Userstack from the browser?
Only Userstack is browser-friendly — it returns CORS headers over HTTPS. AgentDeals needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are AgentDeals and Userstack free for commercial use?
AgentDeals has unclear commercial terms, and Userstack 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.