CPFHub vs Federal Register
Same instrument, two spec sheets — measured, not claimed.
CPFHub vs Federal Register: common questions
Which is more reliable, CPFHub or Federal Register?
On our scheduled checks, Federal Register leads on measured uptime — CPFHub at —% versus Federal Register 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 CPFHub and Federal Register need an API key?
Federal Register needs no key, while CPFHub requires a free API key. If you want to start calling without signup, reach for Federal Register first.
Can I call CPFHub and Federal Register from the browser?
Yes — both CPFHub and Federal Register 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 CPFHub and Federal Register free for commercial use?
CPFHub has unclear commercial terms, and Federal Register allows commercial use on its free tier. 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.