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DummyJSON vs serpstack

Same instrument, two spec sheets — measured, not claimed.

APIDummyJSONHEALTHY98serpstackHEALTHY93
Uptime · 30d
Uptime · 90d99.02%99.02%
Uptime · 30d100%98.3%
P50 · ms32492
P95 · ms11131442
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — no keyFree tier — key may be required
Rate limit100 req/window · 99 remaining · resets 1783510243Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

DummyJSON vs serpstack: common questions

Which is more reliable, DummyJSON or serpstack?

Both are neck-and-neck — DummyJSON and serpstack 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, DummyJSON or serpstack?

DummyJSON has the lower median latency in our checks — DummyJSON responds in 32 ms versus serpstack at 492 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 DummyJSON and serpstack need an API key?

DummyJSON needs no key, while serpstack requires a free API key. If you want to start calling without signup, reach for DummyJSON first.

Can I call DummyJSON and serpstack from the browser?

Only DummyJSON is browser-friendly — it returns CORS headers over HTTPS. serpstack needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are DummyJSON and serpstack free for commercial use?

DummyJSON has unclear commercial terms, and serpstack 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.