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Loket.nl API vs OpenPLZ API

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

APILoket.nl APINEW—OpenPLZ APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Loket.nl API vs OpenPLZ API: common questions

Which is more reliable, Loket.nl API or OpenPLZ API?

On our scheduled checks, OpenPLZ API leads on measured uptime — Loket.nl API at —% versus OpenPLZ API 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 Loket.nl API and OpenPLZ API need an API key?

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

Can I call Loket.nl API and OpenPLZ API from the browser?

Yes — both Loket.nl API and OpenPLZ API 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 Loket.nl API and OpenPLZ API free for commercial use?

Loket.nl API has unclear commercial terms, and OpenPLZ API 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.