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US Treasury Reporting Rates of Exchange API
x402
US Treasury Reporting Rates of Exchange API is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-16).
Returns official US Treasury quarterly exchange rates for ~170 currencies against the USD, including full historical data 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
A JSON object containing the country name, currency name, source attribution (U.S. Treasury), the most recent quarterly rate (date + units per USD), and a full historical array of quarterly rates (date + units per USD). If no country/currency is specified, rates for all ~170 currencies are returned.
Example use cases
Government reporting FX rate lookup
“I need the official US Treasury exchange rate for the Nigerian naira against the dollar — get me the latest quarterly rate and the full historical series for government financial reporting purposes.”
Obscure currency rate check
“What is the US Treasury's official exchange rate for the Venezuelan bolivar? I need the most recent quarterly figure and any historical data available.”
Multi-quarter FX trend analysis
“Pull me the US Treasury's quarterly exchange rates for the Pakistani rupee going back as far as the data allows so I can see how it has moved against the dollar over time.”
Technical details
Endpoint
POSThttps://api.vextorium.com/divisas-tesoro-eeuu-pago?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need official US government (Treasury) FX rates, especially for currencies the ECB does not publish (e.g., Argentine peso, Nigerian naira, Venezuelan bolivar). It is ideal for government financial reporting, compliance, sanctions-related research, or any scenario requiring authoritative, publicly sourced quarterly rates with historical depth across ~170 currencies.
Side effects
- Country or currency name not recognized — returns empty or null result
- Misspelled or non-English country/currency name — no match found
- No historical data available for a very recently added currency
- API returns null fields if the Treasury has not published a rate for the requested period
- Network or payment authorization failure (x402 micropayment not processed)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| pais | string | Country in English, e.g. Argentina (omit for all) |
| moneda | string | Currency name in English, e.g. Peso (optional) |
Output
Schema · Response
{
"type": "json",
"example": {
"pais": "Argentina",
"fuente": "U.S. Treasury, Treasury Reporting Rates of Exchange (dominio público)",
"moneda": "Peso",
"ultimo": {
"fecha": "2026-06-30",
"unidades_por_usd": 1495
},
"historico": [
{
"fecha": "2026-06-30",
"unidades_por_usd": 1495
},
{
"fecha": "2026-03-31",
"unidades_por_usd": 1420
},
{
"fecha": "2025-12-31",
"unidades_por_usd": 1480
},
{
"fecha": "2025-09-30",
"unidades_por_usd": 1380
},
{
"fecha": "2025-06-30",
"unidades_por_usd": 1205
},
{
"fecha": "2025-06-30",
"unidades_por_usd": 1345
},
{
"fecha": "2025-03-31",
"unidades_por_usd": 1093
},
{
"fecha": "2025-03-31",
"unidades_por_usd": 1230
},
{
"fecha": "2024-12-31",
"unidades_por_usd": 1052.5
},
{
"fecha": "2024-09-30",
"unidades_por_usd": 989.5
},
{
"fecha": "2024-06-30",
"unidades_por_usd": 929.5
},
{
"fecha": "2024-03-31",
"unidades_por_usd": 876
}
]
}
}Tags
x402
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