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Global Shark Attack API vs SEO Score

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

APIGlobal Shark Attack APIHEALTHY91SEO ScoreHEALTHY91
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms719634
P95 · ms17941704
AuthnoneapiKey
CORSyesno
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

Global Shark Attack API vs SEO Score: common questions

Which is more reliable, Global Shark Attack API or SEO Score?

Both are neck-and-neck — Global Shark Attack API and SEO Score each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Global Shark Attack API or SEO Score?

SEO Score has the lower median latency in our checks — Global Shark Attack API responds in 719 ms versus SEO Score at 634 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 SEO Score need an API key?

Global Shark Attack API needs no key, while SEO Score requires a free API key. If you want to start calling without signup, reach for Global Shark Attack API first.

Can I call Global Shark Attack API and SEO Score from the browser?

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

Are Global Shark Attack API and SEO Score free for commercial use?

Global Shark Attack API has unclear commercial terms, and SEO Score 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.