Fed Treasury vs Helium
Same instrument, two spec sheets — measured, not claimed.
Fed Treasury vs Helium: common questions
Which is more reliable, Fed Treasury or Helium?
Both are neck-and-neck — Fed Treasury and Helium each measure 0.0% 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.
Do Fed Treasury and Helium need an API key?
Neither needs a paid key — Fed Treasury is callable with no signup, and Helium is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Fed Treasury and Helium from the browser?
Neither sends browser-friendly CORS headers reliably, so call Fed Treasury and Helium from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.
Are Fed Treasury and Helium free for commercial use?
Fed Treasury allows commercial use on its free tier, and Helium 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.