Overview
An FX rate API for live forex rates, in one call: pass two currency codes as parameters to receive the current conversion multiplier and an ISO 8601 timestamp showing when the rate refreshed. The response covers over 170 currencies. Each response names both currencies. Paid plans also return the inverse rate for reverse conversions without a second call, and how far the pair has moved over the last day, 7 days, 30 days and year, measured from the rate's date, so a historical lookup reports the moves leading up to that day. The last 30 daily closes are stored per currency, so paid plans also get the pair's 30-day high, low, average and volatility, and history=true returns the closes themselves. On live lookups, hourly=true adds the rate for each of the last 24 hours.
Endpoint
One host, one path per API. The block below shows this call in four languages; every one of them is the same HTTP request. Making requests covers the timeouts, retries and parameter rules that apply to all of them. The SDKs wrap the same call in a typed client.
curl "https://api.apiverve.com/v1/exchangerate?currency1=USD¤cy2=EUR&date=2025-06-02&history=true&hourly=true" \
-H "x-api-key: your_api_key_here"const res = await fetch('https://api.apiverve.com/v1/exchangerate?currency1=USD¤cy2=EUR&date=2025-06-02&history=true&hourly=true', {
headers: { 'x-api-key': 'your_api_key_here' },
});
if (!res.ok) throw new Error(`${res.status} ${await res.text()}`);
const { data } = await res.json();
console.log(data);import requests
res = requests.get(
"https://api.apiverve.com/v1/exchangerate?currency1=USD¤cy2=EUR&date=2025-06-02&history=true&hourly=true",
headers={"x-api-key": "your_api_key_here"},
timeout=15,
)
res.raise_for_status()
print(res.json()["data"])package main
import (
"fmt"
"io"
"net/http"
)
func main() {
req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/exchangerate?currency1=USD¤cy2=EUR&date=2025-06-02&history=true&hourly=true", nil)
req.Header.Set("x-api-key", "your_api_key_here")
res, err := http.DefaultClient.Do(req)
if err != nil {
panic(err)
}
defer res.Body.Close()
out, _ := io.ReadAll(res.Body)
fmt.Println(string(out))
}Replace your_api_key_here with the key from your dashboard. When the inputs arrive as a list rather than one at a time, batch requests run up to 200 of them through this same API in a single call.
Authentication
Send your key in the x-api-key header. That is the only auth step — there is no token exchange and no per-endpoint scope to configure. Authentication covers creating, rotating and revoking keys.
A 401 means the key is missing, invalid or expired. A 403 means the key is valid but not permitted here — blocked by a key restriction or an IP allow-list. Running out of credits is a 429.
Parameters
Sent in the query string. Premium parameters are accepted on every plan but only take effect on plans that include them.
| Parameter | Type | Description |
|---|---|---|
currency1Required | string | The first currency you want to get the exchange rate for |
currency2Required | string | The second currency you want to get the exchange rate for |
dateOptionalPremium | string | Optional past date (YYYY-MM-DD) to use that day's closing rates instead of live rates. History runs from 1999-01-04 for about 30 major currencies and covers every supported currency from March 2024. A day with no rates, such as a weekend or holiday, uses the last close before it. |
historyOptionalPremium | boolean | Include the pair's daily closing rate for the last 30 days |
hourlyOptionalPremium | boolean | Include the pair's rate for each of the last 24 hours (live rates only, not with date) date |
Response
Every API returns the same three top-level keys, so one response handler covers your whole integration: status, error and data. Only data changes shape. Response format covers the envelope, the other output formats and how premium fields are withheld.
{
"status": "ok",
"error": null,
"data": {
"currency1": "USD",
"currency2": "EUR",
"exchangeRate": "0.895099",
"inverseRate": "1.117195",
"date": "2026-10-27",
"lastUpdated": "2026-10-27T17:41:09.810Z",
"currency1Name": "US Dollar",
"currency2Name": "Euro",
"change1d": 0.4467,
"change7d": 0.5739,
"change30d": 1.9699,
"change1y": 4.1682,
"high30d": 0.895099,
"low30d": 0.878037,
"average30d": 0.889911,
"volatility30d": 0.2427,
"history": [
{
"date": "2026-09-28",
"rate": 0.878037
},
{
"date": "2026-09-29",
"rate": 0.880226
},
{
"date": "2026-09-30",
"rate": 0.882434
},
{
"date": "2026-10-01",
"rate": 0.883652
},
{
"date": "2026-10-02",
"rate": 0.888626
},
{
"date": "2026-10-03",
"rate": 0.888626
},
{
"date": "2026-10-04",
"rate": 0.888246
},
{
"date": "2026-10-05",
"rate": 0.894174
},
{
"date": "2026-10-06",
"rate": 0.891674
},
{
"date": "2026-10-07",
"rate": 0.890419
},
{
"date": "2026-10-08",
"rate": 0.892463
},
{
"date": "2026-10-09",
"rate": 0.889796
},
{
"date": "2026-10-10",
"rate": 0.892716
},
{
"date": "2026-10-11",
"rate": 0.892571
},
{
"date": "2026-10-12",
"rate": 0.892822
},
{
"date": "2026-10-13",
"rate": 0.894845
},
{
"date": "2026-10-14",
"rate": 0.891987
},
{
"date": "2026-10-15",
"rate": 0.890861
},
{
"date": "2026-10-16",
"rate": 0.88987
},
{
"date": "2026-10-17",
"rate": 0.889757
},
{
"date": "2026-10-18",
"rate": 0.889761
},
{
"date": "2026-10-19",
"rate": 0.890515
},
{
"date": "2026-10-20",
"rate": 0.889991
},
{
"date": "2026-10-21",
"rate": 0.890629
},
{
"date": "2026-10-22",
"rate": 0.889437
},
{
"date": "2026-10-23",
"rate": 0.891773
},
{
"date": "2026-10-24",
"rate": 0.892532
},
{
"date": "2026-10-25",
"rate": 0.892668
},
{
"date": "2026-10-26",
"rate": 0.891118
},
{
"date": "2026-10-27",
"rate": 0.895099
}
],
"hourly": [
{
"hour": 18,
"rate": 0.891512,
"timestamp": "2026-10-26T18:41:09.810Z"
},
{
"hour": 19,
"rate": 0.891173,
"timestamp": "2026-10-26T19:41:09.810Z"
},
{
"hour": 20,
"rate": 0.8911,
"timestamp": "2026-10-26T20:41:09.810Z"
},
{
"hour": 21,
"rate": 0.891849,
"timestamp": "2026-10-26T21:41:09.810Z"
},
{
"hour": 22,
"rate": 0.89212,
"timestamp": "2026-10-26T22:41:09.810Z"
},
{
"hour": 23,
"rate": 0.891692,
"timestamp": "2026-10-26T23:41:09.810Z"
},
{
"hour": 0,
"rate": 0.891922,
"timestamp": "2026-10-27T00:41:09.810Z"
},
{
"hour": 1,
"rate": 0.892681,
"timestamp": "2026-10-27T01:41:09.810Z"
},
{
"hour": 2,
"rate": 0.892646,
"timestamp": "2026-10-27T02:41:09.810Z"
},
{
"hour": 3,
"rate": 0.892287,
"timestamp": "2026-10-27T03:41:09.810Z"
},
{
"hour": 4,
"rate": 0.892805,
"timestamp": "2026-10-27T04:41:09.810Z"
},
{
"hour": 5,
"rate": 0.893422,
"timestamp": "2026-10-27T05:41:09.810Z"
},
{
"hour": 6,
"rate": 0.893135,
"timestamp": "2026-10-27T06:41:09.810Z"
},
{
"hour": 7,
"rate": 0.892984,
"timestamp": "2026-10-27T07:41:09.810Z"
},
{
"hour": 8,
"rate": 0.8937,
"timestamp": "2026-10-27T08:41:09.810Z"
},
{
"hour": 9,
"rate": 0.894058,
"timestamp": "2026-10-27T09:41:09.810Z"
},
{
"hour": 10,
"rate": 0.89364,
"timestamp": "2026-10-27T10:41:09.810Z"
},
{
"hour": 11,
"rate": 0.893781,
"timestamp": "2026-10-27T11:41:09.810Z"
},
{
"hour": 12,
"rate": 0.894553,
"timestamp": "2026-10-27T12:41:09.810Z"
},
{
"hour": 13,
"rate": 0.894604,
"timestamp": "2026-10-27T13:41:09.810Z"
},
{
"hour": 14,
"rate": 0.894209,
"timestamp": "2026-10-27T14:41:09.810Z"
},
{
"hour": 15,
"rate": 0.894651,
"timestamp": "2026-10-27T15:41:09.810Z"
},
{
"hour": 16,
"rate": 0.895323,
"timestamp": "2026-10-27T16:41:09.810Z"
},
{
"hour": 17,
"rate": 0.895099,
"timestamp": "2026-10-27T17:41:09.810Z"
}
]
}
}
Response fields
Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.
| Field | Type | Example | Description |
|---|---|---|---|
currency1 | string | "USD" | The first currency code requested for exchange rate |
currency2 | string | "EUR" | The second currency code requested for exchange rate |
exchangeRate | string | "0.895099" | The current exchange rate from currency1 to currency2 |
inverseRatePremium | string | "1.117195" | The inverse exchange rate from currency2 to currency1 |
date | string | "2026-10-27" | UTC date (YYYY-MM-DD) of the rates used: the live rates' date, or the day served for a date request |
lastUpdated | string | "2026-10-27T17:41:09.810Z" | ISO 8601 timestamp of when the exchange rates were last refreshed |
currency1Name | string | "US Dollar" | English name of the first currency (e.g. US Dollar); null for codes without one, such as BTC |
currency2Name | string | "Euro" | English name of the second currency (e.g. Euro); null for codes without one, such as BTC |
change1dPremium | number | 0.4467 | Percent change in the exchange rate over the last day, from stored daily closes; null when no close is recorded for that day |
change7dPremium | number | 0.5739 | Percent change in the exchange rate over the last 7 days, from stored daily closes; null when no close is recorded for that day |
change30dPremium | number | 1.9699 | Percent change in the exchange rate over the last 30 days, from stored daily closes; null when no close is recorded for that day |
change1yPremium | number | 4.1682 | Percent change in the exchange rate over the last year, from stored daily closes; null when no close is recorded for that day |
high30dPremium | number | 0.895099 | Highest daily close over the last 30 days of the pair; null until two days are stored |
low30dPremium | number | 0.878037 | Lowest daily close over the last 30 days of the pair; null until two days are stored |
average30dPremium | number | 0.889911 | Mean daily close over the last 30 days of the pair; null until two days are stored |
volatility30dPremium | number | 0.2427 | Standard deviation of the daily percent changes over the last 30 days (not annualized); null until two days are stored |
historyPremium | array[30] | The pair's daily closing rates for the last 30 days, oldest first, ending with the served rate (when history=true). Dates more than 30 days back have no series, so only the requested day is returned | |
datePremium | string | "2026-09-28" | UTC date of the close (YYYY-MM-DD) |
ratePremium | number | 0.878037 | Units of currency2 per one currency1 at that close |
hourlyPremium | array[24] | The pair's rate for each of the last 24 hours, oldest first (when hourly=true) | |
hourPremium | number | 18 | UTC hour of day (0-23) the rate was recorded in |
ratePremium | number | 0.891512 | Exchange rate from currency1 to currency2 at that hour |
timestampPremium | string | "2026-10-26T18:41:09.810Z" | ISO 8601 time the rate was recorded |
Errors
Read the HTTP status first, then error for the specific reason. The body names the parameter that has to change. Error handling covers the full status list and which of them are worth retrying.
| Status | Meaning | What to do |
|---|---|---|
400 | Input was rejected | Read error; it names the parameter. |
401 | Key missing or invalid | Check the header name and the key value. |
403 | Key valid, but not permitted | A key restriction or IP allow-list; see key scoping. |
429 | Rate limited, or out of credits | Read error to tell them apart; see rate limits. |
Start from a template
A working app built on this API, ready to deploy with your own key. Vercel asks for the key when you deploy; the code is on GitHub to change first.
Use cases
- Multi-Currency Checkout
- Convert product catalog totals into a buyer's local currency at payment time so shoppers review exact prices before charging their cards.
- Cross-Border Invoicing
- When billing foreign clients, SaaS platforms convert base subscription fees into regional currencies to generate accurate invoices.
- Travel Booking Conversion
- Travel booking engines convert hotel and flight rates into the traveler's home currency so customers can compare international costs.
- Remittance Payout Preview
- To eliminate foreign exchange surprises, fintech apps display the converted payout amount before a user confirms an international wire.
Other ways to use Exchange Rate
Set up Exchange Rate on APIVerve, or reach the same source a different way. Your APIVerve account and credits work on all of them — one key, one balance.
Related
Pages that use this API:
- GraphQLPlatform
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