---
title: "Official US Treasury quarterly exchange rates (~170 currencies vs USD)"
method: GET
path: "/v1/fx/official"
---

# Official US Treasury quarterly exchange rates (~170 currencies vs USD)

`GET /v1/fx/official`

## Request

- Base URL: `https://data.greeneris.io` (the document declares no server; this is the origin it was published from)
- URL: `https://data.greeneris.io/v1/fx/official`
- Auth: none declared

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.

## Query parameters

- `currencies` string
- `date` string

## Response `200`

Successful response

- unknown

---

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