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OpenQR vs Wahlumfragen Datenbank API

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

APIOpenQRNEW—Wahlumfragen Datenbank APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

OpenQR vs Wahlumfragen Datenbank API: common questions

Which is more reliable, OpenQR or Wahlumfragen Datenbank API?

On our scheduled checks, Wahlumfragen Datenbank API leads on measured uptime — OpenQR at —% versus Wahlumfragen Datenbank 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 OpenQR and Wahlumfragen Datenbank API need an API key?

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

Can I call OpenQR and Wahlumfragen Datenbank API from the browser?

Yes — both OpenQR and Wahlumfragen Datenbank 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 OpenQR and Wahlumfragen Datenbank API free for commercial use?

OpenQR has unclear commercial terms, and Wahlumfragen Datenbank 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.