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ClinicalTrials.gov vs RacingHub

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

APIClinicalTrials.govNEW—RacingHubNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedCC BY 4.0 (source data from the F1DB project)
Free tierFree — limits not publishedFree — no key required
Rate limitUnpublished100 req/window · 99 remaining · resets 60
In directory since2026-07-052026-07-05
operationalpartialdownno data

ClinicalTrials.gov vs RacingHub: common questions

Which is more reliable, ClinicalTrials.gov or RacingHub?

On our scheduled checks, RacingHub leads on measured uptime — ClinicalTrials.gov at —% versus RacingHub 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 ClinicalTrials.gov and RacingHub need an API key?

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

Can I call ClinicalTrials.gov and RacingHub from the browser?

Yes — both ClinicalTrials.gov and RacingHub 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 ClinicalTrials.gov and RacingHub free for commercial use?

ClinicalTrials.gov has unclear commercial terms, and RacingHub 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.