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OOPSpam vs Todoist

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

APIOOPSpamHEALTHY98TodoistDEAD0
Uptime · 30d
Uptime · 90d100%0.0%
Uptime · 30d100%0.0%
P50 · ms217—
P95 · ms360—
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limit1000 req/window · 999 remainingRetry-After: 2s
In directory since2026-07-052026-07-05
operationalpartialdownno data

OOPSpam vs Todoist: common questions

Which is more reliable, OOPSpam or Todoist?

On our scheduled checks, OOPSpam leads on measured uptime — OOPSpam at 100% versus Todoist at 0.0% 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 OOPSpam and Todoist need an API key?

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

Can I call OOPSpam and Todoist from the browser?

Only Todoist 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 OOPSpam and Todoist free for commercial use?

OOPSpam has unclear commercial terms, and Todoist 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.