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CheapShark API vs RSS2JSON

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

APICheapShark APINEW—RSS2JSONNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CheapShark API vs RSS2JSON: common questions

Which is more reliable, CheapShark API or RSS2JSON?

On our scheduled checks, RSS2JSON leads on measured uptime — CheapShark API at —% versus RSS2JSON 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 RSS2JSON need an API key?

Neither needs a paid key — CheapShark API is callable with no signup, and RSS2JSON is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call CheapShark API and RSS2JSON from the browser?

Only RSS2JSON is browser-friendly — it returns CORS headers over HTTPS. CheapShark API needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are CheapShark API and RSS2JSON free for commercial use?

CheapShark API has unclear commercial terms, and RSS2JSON 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.