Federal Register vs REG-Vault
Same instrument, two spec sheets — measured, not claimed.
Federal Register vs REG-Vault: common questions
Which is more reliable, Federal Register or REG-Vault?
On our scheduled checks, REG-Vault leads on measured uptime — Federal Register at —% versus REG-Vault 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 Federal Register and REG-Vault need an API key?
Neither needs a paid key — Federal Register 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 Federal Register and REG-Vault from the browser?
Yes — both Federal Register 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 Federal Register and REG-Vault free for commercial use?
Federal Register allows commercial use on its free tier, 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.