curl --request POST \
  --url https://api.balansas.com/functions/v1/customer-api/fiat-accounts \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "accountName": "<string>",
  "umbrellaLinkId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "linkedBusinessId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
'

import requests

url = "https://api.balansas.com/functions/v1/customer-api/fiat-accounts"

payload = {
    "accountName": "<string>",
    "umbrellaLinkId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "linkedBusinessId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    accountName: '<string>',
    umbrellaLinkId: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    linkedBusinessId: '3c90c3cc-0d44-4b50-8888-8dd25736052a'
  })
};

fetch('https://api.balansas.com/functions/v1/customer-api/fiat-accounts', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.balansas.com/functions/v1/customer-api/fiat-accounts",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'accountName' => '<string>',
    'umbrellaLinkId' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    'linkedBusinessId' => '3c90c3cc-0d44-4b50-8888-8dd25736052a'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.balansas.com/functions/v1/customer-api/fiat-accounts"

	payload := strings.NewReader("{\n  \"accountName\": \"<string>\",\n  \"umbrellaLinkId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"linkedBusinessId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("x-api-key", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.balansas.com/functions/v1/customer-api/fiat-accounts")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"accountName\": \"<string>\",\n  \"umbrellaLinkId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"linkedBusinessId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.balansas.com/functions/v1/customer-api/fiat-accounts")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"accountName\": \"<string>\",\n  \"umbrellaLinkId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"linkedBusinessId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\n}"

response = http.request(request)
puts response.read_body

{
  "data": {
    "id": "a3f1c2e4-5b6d-7e8f-9a0b-1c2d3e4f5a6b",
    "fr_account_id": "facc_3kZ9xQ2mLpV",
    "account_name": "EUR Operating",
    "currency": "EUR",
    "balance": 1250.75,
    "status": "active",
    "is_master": true,
    "linked_business_id": null,
    "fr_owner_business_id": "busi_8Jh2KdLm5Qx",
    "iban": "GB29NWBK60161331926819",
    "account_number": "31926819",
    "sort_code": "601613",
    "routing_number": "026073150",
    "created_at": "2026-05-28T11:02:09.456Z",
    "updated_at": "2026-05-28T11:02:09.456Z"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "details": "<unknown>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "details": "<unknown>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "details": "<unknown>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "details": "<unknown>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "details": "<unknown>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "details": "<unknown>"
  }
}