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Fed Treasury vs GOV.UK Pay API

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

APIFed TreasuryDEAD0GOV.UK Pay APIDEAD0
Uptime · 30d
Uptime · 90d0.0%0.0%
Uptime · 30d0.0%0.0%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licenseOpen U.S. Government data (public domain)Unverified
Free tierFree — no API keyFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Fed Treasury vs GOV.UK Pay API: common questions

Which is more reliable, Fed Treasury or GOV.UK Pay API?

Both are neck-and-neck — Fed Treasury and GOV.UK Pay API 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 GOV.UK Pay API need an API key?

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

Can I call Fed Treasury and GOV.UK Pay API from the browser?

Neither sends browser-friendly CORS headers reliably, so call Fed Treasury and GOV.UK Pay API 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 GOV.UK Pay API free for commercial use?

Fed Treasury allows commercial use on its free tier, and GOV.UK Pay API 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.