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JSONPlaceholder vs Todoist

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

APIJSONPlaceholderHEALTHY95TodoistDEAD0
Uptime · 30d
Uptime · 90d100%0.0%
Uptime · 30d100%0.0%
P50 · ms401—
P95 · ms1096—
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limit1000 req/window · 999 remaining · resets 1783509378Retry-After: 2s
In directory since2026-07-052026-07-05
operationalpartialdownno data

JSONPlaceholder vs Todoist: common questions

Which is more reliable, JSONPlaceholder or Todoist?

On our scheduled checks, JSONPlaceholder leads on measured uptime — JSONPlaceholder 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 JSONPlaceholder and Todoist need an API key?

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

Can I call JSONPlaceholder and Todoist from the browser?

Yes — both JSONPlaceholder and Todoist send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are JSONPlaceholder and Todoist free for commercial use?

JSONPlaceholder 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.