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CheapShark API vs Fixer API

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

APICheapShark APINEW—Fixer APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnono
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

CheapShark API vs Fixer API: common questions

Which is more reliable, CheapShark API or Fixer API?

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

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

Can I call CheapShark API and Fixer API from the browser?

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

Are CheapShark API and Fixer API free for commercial use?

CheapShark API has unclear commercial terms, and Fixer 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.