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Billplz vs Fed Treasury

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

APIBillplzNEW—Fed TreasuryNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
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?

On our scheduled checks, Fed Treasury leads on measured uptime — Billplz at —% versus Fed Treasury 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 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.