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HOL Registry Broker vs The Guardian

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

APIHOL Registry BrokerHEALTHY94The GuardianHEALTHY89
Uptime · 30d
Uptime · 90d99.02%98.0%
Uptime · 30d100%98.3%
P50 · ms386742
P95 · ms9132726
AuthapiKeyapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree developer key — registration required
Rate limitUnpublished5000 calls/day (developer tier)
In directory since2026-07-052026-07-05
operationalpartialdownno data

HOL Registry Broker vs The Guardian: common questions

Which is more reliable, HOL Registry Broker or The Guardian?

On our scheduled checks, HOL Registry Broker leads on measured uptime — HOL Registry Broker at 99.02% versus The Guardian at 98.0% 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, HOL Registry Broker or The Guardian?

HOL Registry Broker has the lower median latency in our checks — HOL Registry Broker responds in 386 ms versus The Guardian at 742 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 HOL Registry Broker and The Guardian need an API key?

Both ask you to authenticate — HOL Registry Broker uses an API key and The Guardian 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 HOL Registry Broker and The Guardian from the browser?

Only The Guardian is browser-friendly — it returns CORS headers over HTTPS. HOL Registry Broker needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are HOL Registry Broker and The Guardian free for commercial use?

HOL Registry Broker has unclear commercial terms, and The Guardian 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.