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Fed Treasury vs RBA Exchange Rates API

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

APIFed TreasuryDEAD0RBA Exchange Rates APIDEAD0
Uptime · 30d
Uptime · 90d0.0%0.0%
Uptime · 30d0.0%0.0%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
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 RBA Exchange Rates API: common questions

Which is more reliable, Fed Treasury or RBA Exchange Rates API?

Both are neck-and-neck — Fed Treasury and RBA Exchange Rates 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 RBA Exchange Rates API need an API key?

Fed Treasury needs no key, while RBA Exchange Rates 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 RBA Exchange Rates API from the browser?

Only RBA Exchange Rates API is browser-friendly — it returns CORS headers over HTTPS. Fed Treasury needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Fed Treasury and RBA Exchange Rates API free for commercial use?

Fed Treasury allows commercial use on its free tier, and RBA Exchange Rates 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.