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City, Analyze Boston vs REG-Vault

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

APICity, Analyze BostonHEALTHY90REG-VaultHEALTHY91
Uptime · 30d
Uptime · 90d100%93.1%
Uptime · 30d100%88.3%
P50 · ms663260
P95 · ms1410609
AuthapiKeynone
CORSnoyes
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

City, Analyze Boston vs REG-Vault: common questions

Which is more reliable, City, Analyze Boston or REG-Vault?

On our scheduled checks, City, Analyze Boston leads on measured uptime — City, Analyze Boston at 100% versus REG-Vault at 93.1% 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, City, Analyze Boston or REG-Vault?

REG-Vault has the lower median latency in our checks — City, Analyze Boston responds in 663 ms versus REG-Vault at 260 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 City, Analyze Boston and REG-Vault need an API key?

REG-Vault needs no key, while City, Analyze Boston requires a free API key. If you want to start calling without signup, reach for REG-Vault first.

Can I call City, Analyze Boston and REG-Vault from the browser?

Only REG-Vault is browser-friendly — it returns CORS headers over HTTPS. City, Analyze Boston needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are City, Analyze Boston and REG-Vault free for commercial use?

City, Analyze Boston has unclear commercial terms, and REG-Vault 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.