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restful-api.dev vs Vercel API

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

APIrestful-api.devNEW—Vercel APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

restful-api.dev vs Vercel API: common questions

Which is more reliable, restful-api.dev or Vercel API?

On our scheduled checks, Vercel API leads on measured uptime — restful-api.dev at —% versus Vercel 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 restful-api.dev and Vercel API need an API key?

restful-api.dev needs no key, while Vercel API requires a free API key. If you want to start calling without signup, reach for restful-api.dev first.

Can I call restful-api.dev and Vercel API from the browser?

Yes — both restful-api.dev and Vercel 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 restful-api.dev and Vercel API free for commercial use?

restful-api.dev has unclear commercial terms, and Vercel 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.