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Saylor Innovations Data Desk – US Treasury FX Rates
x402
Saylor Innovations Data Desk – US Treasury FX Rates is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-16).
Returns US Treasury official quarterly foreign currency exchange rates (foreign currency units per US dollar) for any country or currency, used in federal reporting
Price / call$0.01
Success—
StatusUnknown
How this service works
US Treasury official exchange rates - quarterly foreign currency units per US dollar for any country or currency, used in federal reporting
Output
A JSON object containing an array of exchange rate records keyed by currency code, the quarter-end date the rates are valid as of, the number of results returned, the query as interpreted by the server, the data source attribution, and an optional note providing context or caveats for interpreting the figures.
Example use cases
Federal grant compliance FX conversion
“I need the official US Treasury quarterly exchange rate for the euro so I can convert our EU grant expenditures for the federal compliance report — what's the current figure?”
Government contractor invoice in Brazilian real
“We received an invoice in Brazilian real and need to report it using the official Treasury FX rate — can you look up the quarterly rate for Brazil?”
Comparing Treasury rates across multiple currencies
“Can you pull the US Treasury official quarterly exchange rates for Japan, South Korea, and Australia so I can see what foreign currency units each country's rate gives per dollar?”
Technical details
Endpoint
GEThttps://saylorinnovations.com/api/treasury/fx-rates?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need the official US Treasury quarterly exchange rates specifically for federal reporting, government contracting, or compliance purposes — not for real-time or market FX rates. It is the authoritative source for the rates the US government mandates in official financial reporting and grant administration.
Side effects
- Unrecognized country or currency query returns zero results or an empty rates array
- Ambiguous query text may be misinterpreted, returning rates for the wrong currency
- Data may lag if Treasury has not yet published the current quarter's rates
- Network or payment failure returns a 402 or 5xx error
- Malformed query parameter may result in a server-side error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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