OpenMercantil vs REG-Vault

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

Uptime · 30d
Uptime · 90d93.1%93.1%
Uptime · 30d98.3%88.3%
P50 · ms116260
P95 · ms3973609
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — anonymous, no keyFree — limits not published
Rate limit60 req/min, 200 req/day per IP (anonymous)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

OpenMercantil vs REG-Vault: common questions

Which is more reliable, OpenMercantil or REG-Vault?

Both are neck-and-neck — OpenMercantil and REG-Vault each measure 93.1% 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, OpenMercantil or REG-Vault?

OpenMercantil has the lower median latency in our checks — OpenMercantil responds in 116 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 OpenMercantil and REG-Vault need an API key?

Neither needs a paid key — OpenMercantil is callable with no signup, and REG-Vault is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call OpenMercantil and REG-Vault from the browser?

Yes — both OpenMercantil and REG-Vault 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 OpenMercantil and REG-Vault free for commercial use?

OpenMercantil 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.