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Host.io vs Serialif Color

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

APIHost.ioREACHABLE—Serialif ColorNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Host.io vs Serialif Color: common questions

Which is more reliable, Host.io or Serialif Color?

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

Serialif Color needs no key, while Host.io requires a free API key. If you want to start calling without signup, reach for Serialif Color first.

Can I call Host.io and Serialif Color from the browser?

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

Are Host.io and Serialif Color free for commercial use?

Host.io has unclear commercial terms, and Serialif Color 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.