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Billplz vs Fed Treasury

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

APIBillplzDEAD0Fed TreasuryDEAD0
Uptime · 30d
Uptime · 90d0.0%0.0%
Uptime · 30d0.0%0.0%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedOpen U.S. Government data (public domain)
Free tierFree tier — API key requiredFree — no API key
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Billplz vs Fed Treasury: common questions

Which is more reliable, Billplz or Fed Treasury?

Both are neck-and-neck — Billplz and Fed Treasury 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 Billplz and Fed Treasury need an API key?

Fed Treasury needs no key, while Billplz requires a free API key. If you want to start calling without signup, reach for Fed Treasury first.

Can I call Billplz and Fed Treasury from the browser?

Neither sends browser-friendly CORS headers reliably, so call Billplz and Fed Treasury from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Billplz and Fed Treasury free for commercial use?

Billplz has unclear commercial terms, and Fed Treasury 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.