curl --request POST \
  --url https://lender.sandbox.lerian.net/api/v1/loan-applications/preview-schedule \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "annualInterestRate": "0.12000000",
  "dayCountConvention": "ACT/365",
  "jurisdictionCode": "BR",
  "principalAmount": "50000.00",
  "startDate": "2026-06-14T00:00:00Z",
  "termMonths": 24,
  "gracePeriodDays": 30
}
'

import requests

url = "https://lender.sandbox.lerian.net/api/v1/loan-applications/preview-schedule"

payload = {
    "annualInterestRate": "0.12000000",
    "dayCountConvention": "ACT/365",
    "jurisdictionCode": "BR",
    "principalAmount": "50000.00",
    "startDate": "2026-06-14T00:00:00Z",
    "termMonths": 24,
    "gracePeriodDays": 30
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    annualInterestRate: '0.12000000',
    dayCountConvention: 'ACT/365',
    jurisdictionCode: 'BR',
    principalAmount: '50000.00',
    startDate: '2026-06-14T00:00:00Z',
    termMonths: 24,
    gracePeriodDays: 30
  })
};

fetch('https://lender.sandbox.lerian.net/api/v1/loan-applications/preview-schedule', 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://lender.sandbox.lerian.net/api/v1/loan-applications/preview-schedule",
  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([
    'annualInterestRate' => '0.12000000',
    'dayCountConvention' => 'ACT/365',
    'jurisdictionCode' => 'BR',
    'principalAmount' => '50000.00',
    'startDate' => '2026-06-14T00:00:00Z',
    'termMonths' => 24,
    'gracePeriodDays' => 30
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($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://lender.sandbox.lerian.net/api/v1/loan-applications/preview-schedule"

	payload := strings.NewReader("{\n  \"annualInterestRate\": \"0.12000000\",\n  \"dayCountConvention\": \"ACT/365\",\n  \"jurisdictionCode\": \"BR\",\n  \"principalAmount\": \"50000.00\",\n  \"startDate\": \"2026-06-14T00:00:00Z\",\n  \"termMonths\": 24,\n  \"gracePeriodDays\": 30\n}")

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

	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://lender.sandbox.lerian.net/api/v1/loan-applications/preview-schedule")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"annualInterestRate\": \"0.12000000\",\n  \"dayCountConvention\": \"ACT/365\",\n  \"jurisdictionCode\": \"BR\",\n  \"principalAmount\": \"50000.00\",\n  \"startDate\": \"2026-06-14T00:00:00Z\",\n  \"termMonths\": 24,\n  \"gracePeriodDays\": 30\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://lender.sandbox.lerian.net/api/v1/loan-applications/preview-schedule")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"annualInterestRate\": \"0.12000000\",\n  \"dayCountConvention\": \"ACT/365\",\n  \"jurisdictionCode\": \"BR\",\n  \"principalAmount\": \"50000.00\",\n  \"startDate\": \"2026-06-14T00:00:00Z\",\n  \"termMonths\": 24,\n  \"gracePeriodDays\": 30\n}"

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

{
  "calendarReference": "<string>",
  "dayCountConvention": "ACT/365",
  "installments": [
    {
      "dueDate": "2026-06-14",
      "interestAmount": "234.56",
      "number": 1,
      "principalAmount": "1000.00",
      "remainingBalance": "49000.00",
      "totalAmount": "1234.56"
    }
  ],
  "jurisdictionCode": "BR",
  "profileVersion": "1.0.0",
  "totalInterest": "4321.00",
  "totalPrincipal": "50000.00",
  "effectiveCostPreview": {
    "effectiveCostAnnualPct": "12.00000000",
    "effectiveCostMonthlyPct": "0.94888100",
    "memoryOfCalculation": {},
    "methodId": "<string>",
    "rateTableSnapshot": {}
  },
  "jurisdictionExtensions": {
    "body": {},
    "overlayKey": "<string>"
  }
}

{
  "code": "ERR-0001",
  "detail": "Property foo is required but is missing.",
  "errors": [
    {
      "location": "<string>",
      "message": "<string>",
      "value": "<unknown>"
    }
  ],
  "instance": "https://example.com/error-log/abc123",
  "status": 400,
  "title": "Bad Request",
  "type": "https://example.com/errors/example",
  "upstream": {
    "code": "E4001",
    "message": "account not found at provider"
  }
}