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Global Shark Attack API vs Nationalize.io

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

APIGlobal Shark Attack APIHEALTHY91Nationalize.ioHEALTHY93
Uptime · 30d
Uptime · 90d100%97.1%
Uptime · 30d100%100%
P50 · ms719448
P95 · ms1794985
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedKeyless usage limited (x-rate-limit-limit: 25 observed); 2,500 names/mo with a free key
Rate limitUnpublishedKeyless cap 25 per x-rate-limit-limit header; remaining/reset exposed in response headers
In directory since2026-07-052026-07-05
operationalpartialdownno data

Global Shark Attack API vs Nationalize.io: common questions

Which is more reliable, Global Shark Attack API or Nationalize.io?

On our scheduled checks, Global Shark Attack API leads on measured uptime — Global Shark Attack API at 100% versus Nationalize.io at 97.1% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Global Shark Attack API or Nationalize.io?

Nationalize.io has the lower median latency in our checks — Global Shark Attack API responds in 719 ms versus Nationalize.io at 448 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Global Shark Attack API and Nationalize.io need an API key?

Neither needs a paid key — Global Shark Attack API is callable with no signup, and Nationalize.io is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Global Shark Attack API and Nationalize.io from the browser?

Yes — both Global Shark Attack API and Nationalize.io 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 Global Shark Attack API and Nationalize.io free for commercial use?

Global Shark Attack API has unclear commercial terms, and Nationalize.io 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.