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US Treasury Reporting Rates of Exchange (FX)
x402
US Treasury Reporting Rates of Exchange (FX) is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-19).
Returns official US Treasury quarterly exchange rates for ~170 currencies against the USD, including historical rates per country.
Price / call$0.003
Success—
StatusUnknown
How this service works
Official US Treasury reporting rates of exchange (quarterly) for about 170 currencies against the US dollar, including many the ECB does not publish (Argentine peso, naira, bolivar...), with history per country.
Output
Returns a JSON object with the country name, currency name, the latest quarterly exchange rate (units per USD with date), a source attribution to the US Treasury, and an array of historical quarterly rates (date and units per USD).
Example use cases
Emerging market FX rate lookup
“What's the current official US Treasury exchange rate for the Nigerian naira against the dollar, and what were the rates for the past two quarters?”
Government compliance FX reporting
“I need the official US Treasury quarterly exchange rate for the Venezuelan bolivar — give me the latest rate and the historical series for all available quarters.”
Multi-currency rate survey
“Can you pull the latest US Treasury reporting rates for all available currencies so I can compare which ones have weakened the most against the dollar recently?”
Technical details
Endpoint
POSThttps://api.vextorium.com/v1/us-treasury-fx-rates?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need official, government-sourced quarterly FX rates — especially for currencies not covered by the ECB (e.g. Argentine peso, Nigerian naira, Venezuelan bolivar, Iraqi dinar). Ideal for compliance, government reporting, international accounting, or research requiring authoritative USD exchange rates for ~170 currencies with historical quarterly data.
Side effects
- Unknown country name returns empty or error response
- Currency name mismatch (e.g. incorrect spelling) may return no results
- Quarterly data may lag real-time market rates — not suitable for live trading
- If no country is specified and the response is large, parsing may be slow
- Network or payment failure results in no data returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| country | string | Country in English, e.g. Argentina (omit for all) |
| currency | string | Currency name in English, e.g. Peso (optional) |
Output
Schema · Response
{
"type": "json",
"example": {
"last": {
"date": "2026-06-30",
"units_per_usd": 1495
},
"source": "U.S. Treasury, Treasury Reporting Rates of Exchange (public domain)",
"country": "Argentina",
"currency": "Peso",
"historical": [
{
"date": "2026-06-30",
"units_per_usd": 1495
},
{
"date": "2026-03-31",
"units_per_usd": 1420
}
]
}
}Tags
x402
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