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ClickSend REST API v3 vs Parkleitsystem API

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

APIClickSend REST API v3NEW—Parkleitsystem APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limit6000 req/window · 5999 remaining · resets 1Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ClickSend REST API v3 vs Parkleitsystem API: common questions

Which is more reliable, ClickSend REST API v3 or Parkleitsystem API?

On our scheduled checks, Parkleitsystem API leads on measured uptime — ClickSend REST API v3 at —% versus Parkleitsystem 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 ClickSend REST API v3 and Parkleitsystem API need an API key?

Parkleitsystem API needs no key, while ClickSend REST API v3 requires a free API key. If you want to start calling without signup, reach for Parkleitsystem API first.

Can I call ClickSend REST API v3 and Parkleitsystem API from the browser?

Only ClickSend REST API v3 is browser-friendly — it returns CORS headers over HTTPS. Parkleitsystem API needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are ClickSend REST API v3 and Parkleitsystem API free for commercial use?

ClickSend REST API v3 has unclear commercial terms, and Parkleitsystem 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.