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OpenPLZ API vs GeoJS

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

APIOpenPLZ APIUNMONITORED—GeoJSNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree, no API key required
Rate limitUnpublishedUnpublished (no enforced limit stated)
In directory since2026-07-052026-07-05
operationalpartialdownno data

OpenPLZ API vs GeoJS: common questions

Which is more reliable, OpenPLZ API or GeoJS?

Only GeoJS is on our probe schedule so far (—% uptime over 90 days). The other is catalogued but not yet live-checked, so we can't compare measured reliability head-to-head — check the uncovered API's own status page for now.

Do OpenPLZ API and GeoJS need an API key?

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

Can I call OpenPLZ API and GeoJS from the browser?

Yes — both OpenPLZ API and GeoJS 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 OpenPLZ API and GeoJS free for commercial use?

OpenPLZ API has unclear commercial terms, and GeoJS 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.