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ConvertHub API vs RSQ API

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

APIConvertHub APINEW—RSQ APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ConvertHub API vs RSQ API: common questions

Which is more reliable, ConvertHub API or RSQ API?

On our scheduled checks, RSQ API leads on measured uptime — ConvertHub API at —% versus RSQ 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 ConvertHub API and RSQ API need an API key?

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

Can I call ConvertHub API and RSQ API from the browser?

Neither sends browser-friendly CORS headers reliably, so call ConvertHub API and RSQ API from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are ConvertHub API and RSQ API free for commercial use?

ConvertHub API has unclear commercial terms, and RSQ 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.