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Greeneris FX Official Rates
x402
Greeneris FX Official Rates is a paid API for AI agents from data.greeneris.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Retrieves official US Treasury quarterly foreign exchange rates (rate per USD) for one or more currencies, optionally filtered by date
Price / call$0.005
Success—
StatusUnknown
How this service works
Official US Treasury Reporting Rates of Exchange: the legal USD conversion rates required for FBAR/8938 filings and US federal accounting, covering ~170 currencies including exotics absent from ECB feeds. Query: ?currencies=Euro Zone-Euro,Japan-Yen (optional, all if omitted) and ?date=YYYY-MM-DD (latest quarterly rate at or before that date, default today). Returns units of foreign currency per 1 USD. Source updates quarterly; served with a 7-day cache.
Output
Returns a JSON object with the as-of date, count of results, and an array of rate records each containing country, currency, country_currency descriptor, record_date, effective_date, and rate_per_usd. Source is US Treasury FiscalData quarterly official rates.
Example use cases
Example prompt
“What is the official US Treasury exchange rate for Euro Zone-Euro as of 2025-06-30?”
Technical details
Endpoint
GEThttps://data.greeneris.io/v1/fx/officialWhen to prefer
Use this endpoint when you need official, government-authoritative USD exchange rates (US Treasury quarterly rates) rather than real-time market rates — ideal for compliance, invoicing, financial reporting, or any scenario requiring a defensible official rate source. Prefer this over market FX feeds when audit-readiness or official sourcing matters.
Side effects
- Invalid date format returns an error — must be YYYY-MM-DD
- Unknown or misspelled Country-Currency descriptor returns empty or error
- No rate available before the requested date returns empty result set
- Requesting more than 30 currencies in one call may be rejected
- HTTP 402 returned if payment not provided — must pay 0.005 USDC on Base via x402 protocol before retrying
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"as_of": "2026-06-30",
"count": 2,
"rates": [
{
"country": "Euro Zone",
"currency": "Euro",
"record_date": "2026-06-30",
"rate_per_usd": 0.877,
"effective_date": "2026-06-30",
"country_currency": "Euro Zone-Euro"
}
],
"source": "US Treasury FiscalData, Reporting Rates of Exchange (quarterly official rates, public domain)"
}
}Tags
x402
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