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Abstract API vs Host.io

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

APIAbstract APINEW—Host.ioREACHABLE—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key may be required for productionFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Abstract API vs Host.io: common questions

Which is more reliable, Abstract API or Host.io?

On our scheduled checks, Host.io leads on measured uptime — Abstract API at —% versus Host.io 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 Abstract API and Host.io need an API key?

Both ask you to authenticate — Abstract API uses an API key and Host.io uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call Abstract API and Host.io from the browser?

Yes — both Abstract API and Host.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 Abstract API and Host.io free for commercial use?

Abstract API has unclear commercial terms, and Host.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.