FXRates API

API ID 14800

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.

API Documentation

Endpoints

Request
convert one amount (from defaults to USD, amount defaults to 1, to is required and must be a single currency). Example response: {"base": "USD", "date": "2026-11-06", "rates": {"EUR": 0.89566}, "source": "Frankfurter (ECB reference rates)", "conversion": {"from": "USD", "to": "EUR", "amount": 100, "rate": 0.89566, "result": 89.566}}
Endpoint ID: 38375
GET https://zylalabs.com/api/14800/fxrates+api/38375/convert+one+amount
INPUT PARAMETERS

Convert one amount — Endpoint Features

Object Description
from Optional Source currency code, defaults to USD
to Required Target currency code, required, must be a single currency
amount Optional Amount to convert, defaults to 1

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

from
to
amount
API EXAMPLE RESPONSE
JSON
{
    "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
    }
}
Convert one amount — CODE SNIPPETS

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' 


    
Request
the latest reference-rate table for the base currency: {base, date, rates, source}.
Endpoint ID: 38376
GET https://zylalabs.com/api/14800/fxrates+api/38376/latest+rate+table
INPUT PARAMETERS

Latest rate table — Endpoint Features

Object Description
base Optional Base currency code

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

base
API EXAMPLE RESPONSE
JSON
{
    "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)"
}
Latest rate table — CODE SNIPPETS

curl --location --request GET 'https://zylalabs.com/api/14800/fxrates+api/38376/latest+rate+table?base=USD' --header 'Authorization: Bearer YOUR_API_KEY' 


    
Request
JSON body {"conversions": [{"from": "USD", "to": "EUR", "amount": 100}, ...]}, up to 100 entries. Example response (real production response, abridged): {"results": [{"index": 0, "from": "USD", "to": "EUR", "amount": 100, "rate": 0.89566, "result": 89.566, "date": "2026-11-06"}, {"index": 1, "from": "USD", "to": "CNY", "amount": 250.5, "rate": 6.6713, "result": 1671.1606, "date": "2026-11-06"}, {"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": 89.566, "CNY": 1671.1606}}, "source": "Frankfurter (ECB reference rates)"} More than 100 entries returns 400 BATCH_TOO_LARGE; an empty array returns 400 EMPTY_BATCH.
Endpoint ID: 38377
POST https://zylalabs.com/api/14800/fxrates+api/38377/batch+convert
INPUT PARAMETERS

Batch convert — Endpoint Features

Object Description
Request Body Required Json

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

API EXAMPLE RESPONSE
JSON
{
    "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)"
}
Batch convert — CODE SNIPPETS

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}]}'

    

API Access Key & Authentication

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.

Headers
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.

Starts at
$10,000/Year


  • Custom Volume
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  • Specialized Customer Support
  • Real-Time API Monitoring

Overview

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.

FXRates API FAQs

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.

General FAQs

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