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JSONPlaceholder vs OOPSpam

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

APIJSONPlaceholderNEW—OOPSpamNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limit1000 req/window · 999 remaining · resets 17835093781000 req/window · 999 remaining
In directory since2026-07-052026-07-05
operationalpartialdownno data

JSONPlaceholder vs OOPSpam: common questions

Which is more reliable, JSONPlaceholder or OOPSpam?

On our scheduled checks, OOPSpam leads on measured uptime — JSONPlaceholder at —% versus OOPSpam 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 JSONPlaceholder and OOPSpam need an API key?

Neither needs a paid key — JSONPlaceholder is callable with no signup, and OOPSpam is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call JSONPlaceholder and OOPSpam from the browser?

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

Are JSONPlaceholder and OOPSpam free for commercial use?

JSONPlaceholder has unclear commercial terms, and OOPSpam 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.