{
"base": "USD",
"date": "2026-11-09",
"rates": {
"EUR": 0.89342
},
"source": "Frankfurter (ECB reference rates)",
"conversion": {
"from": "USD",
"to": "EUR",
"amount": 100,
"rate": 0.89342,
"result": 89.342
}
}
curl --location --request GET 'https://zylalabs.com/api/14800/fxrates+api/38375/convert+one+amount?from=USD&to=EUR&amount=100' --header 'Authorization: Bearer YOUR_API_KEY'
{
"base": "USD",
"date": "2026-11-09",
"rates": {
"AUD": 1.4505,
"BRL": 5.5167,
"CAD": 1.4103,
"CHF": 0.81873,
"CNY": 6.6728,
"CZK": 21.768,
"DKK": 6.6785,
"EUR": 0.89342,
"GBP": 0.74538,
"HKD": 7.8417,
"HUF": 324.3,
"IDR": 18077,
"ILS": 3.1707,
"INR": 93.93,
"ISK": 122.22,
"JPY": 157.95,
"KRW": 1346.79,
"MXN": 18.6134,
"MYR": 4.059,
"NOK": 9.4099,
"NZD": 1.7816,
"PHP": 63.175,
"PLN": 3.917,
"RON": 4.7735,
"SEK": 9.824,
"SGD": 1.2801,
"THB": 33.49,
"TRY": 50.138,
"ZAR": 16.4482
},
"source": "Frankfurter (ECB reference rates)"
}
curl --location --request GET 'https://zylalabs.com/api/14800/fxrates+api/38376/latest+rate+table?base=USD' --header 'Authorization: Bearer YOUR_API_KEY'
{
"results": [
{
"index": 0,
"from": "USD",
"to": "EUR",
"amount": 100,
"rate": 0.89342,
"result": 89.342,
"date": "2026-11-09"
},
{
"index": 1,
"from": "USD",
"to": "CNY",
"amount": 250.5,
"rate": 6.6728,
"result": 1671.5364,
"date": "2026-11-09"
},
{
"index": 2,
"from": "USD",
"to": "XXX",
"amount": 50,
"code": "INVALID_CURRENCY",
"error": "Currency 'XXX' is not in the ECB reference rate set."
}
],
"summary": {
"total": 3,
"succeeded": 2,
"failed": 1,
"totalsByTarget": {
"EUR": 89.342,
"CNY": 1671.5364
}
},
"source": "Frankfurter (ECB reference rates)"
}
curl --location --request POST 'https://zylalabs.com/api/14800/fxrates+api/38377/batch+convert' --header 'Authorization: Bearer YOUR_API_KEY'
--data-raw '{"conversions": [{"from": "USD", "to": "EUR", "amount": 100}, {"from": "USD", "to": "CNY", "amount": 250.5}, {"from": "USD", "to": "XXX", "amount": 50}]}'
After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the FXRates API simply include your bearer token in the Authorization header.
| Header | Description |
|---|---|
Authorization
|
Required
Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.
|
No long-term commitment. Upgrade, downgrade, or cancel anytime.
Currency conversion API using ECB reference rates via Frankfurter: single conversion, full rate tables and batch conversion of up to 100 amounts in one call.
The European Central Bank's daily reference rates, via Frankfurter. Every response carries the reference date of the rates used, so you can see exactly which day's rates a conversion used.
No. ECB reference rates are published for information; they are not interbank quotes and no bank is obliged to honour them. Use them for accounting, display and estimation, not as a settlement guarantee.
Only that entry fails, with a named error code such as INVALID_CURRENCY; the rest of the batch converts normally and the summary counts successes and failures.
Up to 100 entries per call. More than 100 entries returns 400 BATCH_TOO_LARGE and an empty array returns 400 EMPTY_BATCH, so split larger runs into chunks of 100.
The ECB reference currency set. A code outside that set returns a named INVALID_CURRENCY error rather than a made-up rate, and every response names its source and the reference date of the rates used.
To obtain your API key, first sign in to your account and navigate to the API you want to use. From the API's Pricing section, choose a plan and complete the subscription process. Once subscribed, return to the API page and you will see your API Access Key displayed at the top of the documentation page. You can use this key to authenticate your requests.
You can’t switch APIs during the free trial. If you subscribe to a different API, your trial will end and the new subscription will start as a paid plan.
The free trial lasts for 7 days and allows you to make up to 50 API requests.
No, the free trial is available only once, so we recommend using it on the API that interests you the most. Most of our APIs offer a free trial, but some may not include this option.
Yes. If the API offers a free trial, you will see a "Free 7-Day Trial" option in its Pricing section. The trial lasts for 7 days and allows up to 50 API requests, enabling you to evaluate the API before subscribing to a paid plan.
Zyla API Hub is like a big store for APIs, where you can find thousands of them all in one place. We also offer dedicated support and real-time monitoring of all APIs. Once you sign up, you can pick and choose which APIs you want to use. Just remember, each API needs its own subscription. But if you subscribe to multiple ones, you'll use the same key for all of them, making things easier for you.
You can monitor your API usage through the response headers included with every request:
x-zyla-api-calls-monthly-used: Shows the total number of API requests you have used during the current billing period.
x-zyla-api-calls-monthly-remaining: Shows the number of API requests you have remaining for the current billing period.
Yes, you can cancel your subscription at any time. Simply go to the Pricing section of the API you're subscribed to and click the "Unsubscribe" button.
Please note that upgrades, downgrades, and cancellations take effect immediately. Once your subscription is canceled, access to the service will end immediately, regardless of any remaining API calls in your quota.
Please have a look at our Refund Policy: https://zylalabs.com/terms#refund