curl --request POST \
  --url https://api.sandbox.lead.bank/v2/fundings \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --data '
{
  "user_credit_balance_id": "user_credit_balance_1HCpXwx2EK9oYluWbacgeCnFcLf",
  "account_number_id": "account_number_xyz123",
  "currency_code": "USD",
  "amount": 1000000,
  "metadata": {
    "loan_id": "201681646780571"
  }
}
'

import requests

url = "https://api.sandbox.lead.bank/v2/fundings"

payload = {
    "user_credit_balance_id": "user_credit_balance_1HCpXwx2EK9oYluWbacgeCnFcLf",
    "account_number_id": "account_number_xyz123",
    "currency_code": "USD",
    "amount": 1000000,
    "metadata": { "loan_id": "201681646780571" }
}
headers = {
    "Idempotency-Key": "<idempotency-key>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'Idempotency-Key': '<idempotency-key>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    user_credit_balance_id: 'user_credit_balance_1HCpXwx2EK9oYluWbacgeCnFcLf',
    account_number_id: 'account_number_xyz123',
    currency_code: 'USD',
    amount: 1000000,
    metadata: {loan_id: '201681646780571'}
  })
};

fetch('https://api.sandbox.lead.bank/v2/fundings', 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.sandbox.lead.bank/v2/fundings",
  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([
    'user_credit_balance_id' => 'user_credit_balance_1HCpXwx2EK9oYluWbacgeCnFcLf',
    'account_number_id' => 'account_number_xyz123',
    'currency_code' => 'USD',
    'amount' => 1000000,
    'metadata' => [
        'loan_id' => '201681646780571'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "Idempotency-Key: <idempotency-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.sandbox.lead.bank/v2/fundings"

	payload := strings.NewReader("{\n  \"user_credit_balance_id\": \"user_credit_balance_1HCpXwx2EK9oYluWbacgeCnFcLf\",\n  \"account_number_id\": \"account_number_xyz123\",\n  \"currency_code\": \"USD\",\n  \"amount\": 1000000,\n  \"metadata\": {\n    \"loan_id\": \"201681646780571\"\n  }\n}")

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

	req.Header.Add("Idempotency-Key", "<idempotency-key>")
	req.Header.Add("Authorization", "Bearer <token>")
	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.sandbox.lead.bank/v2/fundings")
  .header("Idempotency-Key", "<idempotency-key>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"user_credit_balance_id\": \"user_credit_balance_1HCpXwx2EK9oYluWbacgeCnFcLf\",\n  \"account_number_id\": \"account_number_xyz123\",\n  \"currency_code\": \"USD\",\n  \"amount\": 1000000,\n  \"metadata\": {\n    \"loan_id\": \"201681646780571\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.sandbox.lead.bank/v2/fundings")

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

request = Net::HTTP::Post.new(url)
request["Idempotency-Key"] = '<idempotency-key>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"user_credit_balance_id\": \"user_credit_balance_1HCpXwx2EK9oYluWbacgeCnFcLf\",\n  \"account_number_id\": \"account_number_xyz123\",\n  \"currency_code\": \"USD\",\n  \"amount\": 1000000,\n  \"metadata\": {\n    \"loan_id\": \"201681646780571\"\n  }\n}"

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

{
  "id": "funding_0o5Fs0EELR0fUjHjbCnEtdUwQe3",
  "user_credit_balance_id": "user_credit_balance_1HCpXwx2EK9oYluWbacgeCnFcLf",
  "account_number_id": "account_number_7Kq2Lm9PxR4sTvWyZaBcDeFgHiJk",
  "currency_code": "USD",
  "amount": 1000000,
  "metadata": {
    "loan_id": "201681646780571"
  },
  "core_transaction_id": null,
  "status": "processing",
  "rejection": {
    "reason": "",
    "details": ""
  },
  "created_at": "2026-09-17T11:01:36Z",
  "updated_at": "2026-09-17T11:01:36Z"
}

{
  "code": "request_malformed",
  "message": "The request is invalid and cannot be parsed by the server.",
  "errors": [
    {
      "code": "payload_invalid",
      "message": "The request body is not valid JSON."
    }
  ]
}

{
  "code": "authentication_missing",
  "message": "The request has no authentication credentials. Send your API token in the Authorization header.",
  "errors": [
    {
      "code": "authentication_missing",
      "message": "The Authorization header is missing. Send your API token as a bearer token.",
      "parameters": [
        "Authorization"
      ]
    }
  ]
}

{
  "code": "object_not_found",
  "message": "No object exists at the requested ID, or it is not visible to this caller."
}

{
  "code": "idempotency_key_in_use",
  "message": "A concurrent request using this Idempotency-Key is still in flight."
}

{
  "code": "parameters_invalid",
  "message": "One or more parameters are invalid.",
  "errors": [
    {
      "code": "required",
      "message": "account_number_id is required.",
      "parameters": [
        "account_number_id"
      ]
    },
    {
      "code": "out_of_range",
      "message": "amount must be greater than 0.",
      "parameters": [
        "amount"
      ]
    }
  ]
}

{
  "code": "rate_limit_exceeded",
  "message": "You have exceeded the rate limit for this endpoint. Retry with backoff."
}

{
  "code": "internal_server_error",
  "message": "An unexpected error occurred. Contact support with the Request-Id header value."
}

{
  "code": "endpoint_disabled",
  "message": "This endpoint is temporarily disabled. Retry after the interval given in the Retry-After header."
}

{
  "code": "gateway_timeout",
  "message": "An upstream system did not respond in time. Retry with backoff."
}