curl --request POST \
  --url https://api.example.com/cob-hub/v1/collections/duedate \
  --header 'Authorization: Bearer demo-access-token' \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: pix-demo-20260903-000001' \
  --header 'X-Account-Id: 019606a1-3b4c-7d8e-9f01-234567890abc' \
  --data '{
  "abatement": {
    "modality": "PERCENTAGE",
    "value": "5.00"
  },
  "additionalInfo": [
    {
      "key": "orderId",
      "value": "12345"
    }
  ],
  "amount": "100.50",
  "calendar": {
    "dueDate": "2030-09-01",
    "validityAfterDue": 30
  },
  "currency": "BRL",
  "debtor": {
    "document": "39053344705",
    "name": "João da Silva"
  },
  "description": "Fatura de servicos",
  "discount": {
    "modality": "VALUE_PER_CALENDAR_DAY_ADVANCE",
    "value": "3.00"
  },
  "fine": {
    "modality": "FIXED_VALUE",
    "value": "10.00"
  },
  "interest": {
    "modality": "VALUE_CALENDAR_DAYS",
    "value": "1.50"
  },
  "keyType": "EVP",
  "keyValue": "123e4567-e12b-12d1-a456-426655440000",
  "merchantCity": "Goiania",
  "merchantName": "Loja Teste",
  "txId": "TX1234567890123456789012345"
}'

import requests

url = "https://api.example.com/cob-hub/v1/collections/duedate"

payload = {
    "abatement": {
        "modality": "PERCENTAGE",
        "value": "5.00"
    },
    "additionalInfo": [
        {
            "key": "orderId",
            "value": "12345"
        }
    ],
    "amount": "100.50",
    "calendar": {
        "dueDate": "2030-09-01",
        "validityAfterDue": 30
    },
    "currency": "BRL",
    "debtor": {
        "document": "39053344705",
        "name": "João da Silva"
    },
    "description": "Fatura de servicos",
    "discount": {
        "modality": "VALUE_PER_CALENDAR_DAY_ADVANCE",
        "value": "3.00"
    },
    "fine": {
        "modality": "FIXED_VALUE",
        "value": "10.00"
    },
    "interest": {
        "modality": "VALUE_CALENDAR_DAYS",
        "value": "1.50"
    },
    "keyType": "EVP",
    "keyValue": "123e4567-e12b-12d1-a456-426655440000",
    "merchantCity": "Goiania",
    "merchantName": "Loja Teste",
    "txId": "TX1234567890123456789012345"
}
headers = {
    "Idempotency-Key": "<idempotency-key>",
    "X-Account-Id": "<x-account-id>",
    "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>',
    'X-Account-Id': '<x-account-id>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    abatement: {modality: 'PERCENTAGE', value: '5.00'},
    additionalInfo: [{key: 'orderId', value: '12345'}],
    amount: '100.50',
    calendar: {dueDate: '2030-09-01', validityAfterDue: 30},
    currency: 'BRL',
    debtor: {document: '39053344705', name: 'João da Silva'},
    description: 'Fatura de servicos',
    discount: {modality: 'VALUE_PER_CALENDAR_DAY_ADVANCE', value: '3.00'},
    fine: {modality: 'FIXED_VALUE', value: '10.00'},
    interest: {modality: 'VALUE_CALENDAR_DAYS', value: '1.50'},
    keyType: 'EVP',
    keyValue: '123e4567-e12b-12d1-a456-426655440000',
    merchantCity: 'Goiania',
    merchantName: 'Loja Teste',
    txId: 'TX1234567890123456789012345'
  })
};

fetch('https://api.example.com/cob-hub/v1/collections/duedate', 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.example.com/cob-hub/v1/collections/duedate",
  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([
    'abatement' => [
        'modality' => 'PERCENTAGE',
        'value' => '5.00'
    ],
    'additionalInfo' => [
        [
                'key' => 'orderId',
                'value' => '12345'
        ]
    ],
    'amount' => '100.50',
    'calendar' => [
        'dueDate' => '2030-09-01',
        'validityAfterDue' => 30
    ],
    'currency' => 'BRL',
    'debtor' => [
        'document' => '39053344705',
        'name' => 'João da Silva'
    ],
    'description' => 'Fatura de servicos',
    'discount' => [
        'modality' => 'VALUE_PER_CALENDAR_DAY_ADVANCE',
        'value' => '3.00'
    ],
    'fine' => [
        'modality' => 'FIXED_VALUE',
        'value' => '10.00'
    ],
    'interest' => [
        'modality' => 'VALUE_CALENDAR_DAYS',
        'value' => '1.50'
    ],
    'keyType' => 'EVP',
    'keyValue' => '123e4567-e12b-12d1-a456-426655440000',
    'merchantCity' => 'Goiania',
    'merchantName' => 'Loja Teste',
    'txId' => 'TX1234567890123456789012345'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "Idempotency-Key: <idempotency-key>",
    "X-Account-Id: <x-account-id>"
  ],
]);

$response = curl_exec($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.example.com/cob-hub/v1/collections/duedate"

	payload := strings.NewReader("{\n  \"abatement\": {\n    \"modality\": \"PERCENTAGE\",\n    \"value\": \"5.00\"\n  },\n  \"additionalInfo\": [\n    {\n      \"key\": \"orderId\",\n      \"value\": \"12345\"\n    }\n  ],\n  \"amount\": \"100.50\",\n  \"calendar\": {\n    \"dueDate\": \"2030-09-01\",\n    \"validityAfterDue\": 30\n  },\n  \"currency\": \"BRL\",\n  \"debtor\": {\n    \"document\": \"39053344705\",\n    \"name\": \"João da Silva\"\n  },\n  \"description\": \"Fatura de servicos\",\n  \"discount\": {\n    \"modality\": \"VALUE_PER_CALENDAR_DAY_ADVANCE\",\n    \"value\": \"3.00\"\n  },\n  \"fine\": {\n    \"modality\": \"FIXED_VALUE\",\n    \"value\": \"10.00\"\n  },\n  \"interest\": {\n    \"modality\": \"VALUE_CALENDAR_DAYS\",\n    \"value\": \"1.50\"\n  },\n  \"keyType\": \"EVP\",\n  \"keyValue\": \"123e4567-e12b-12d1-a456-426655440000\",\n  \"merchantCity\": \"Goiania\",\n  \"merchantName\": \"Loja Teste\",\n  \"txId\": \"TX1234567890123456789012345\"\n}")

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

	req.Header.Add("Idempotency-Key", "<idempotency-key>")
	req.Header.Add("X-Account-Id", "<x-account-id>")
	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.example.com/cob-hub/v1/collections/duedate")
  .header("Idempotency-Key", "<idempotency-key>")
  .header("X-Account-Id", "<x-account-id>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"abatement\": {\n    \"modality\": \"PERCENTAGE\",\n    \"value\": \"5.00\"\n  },\n  \"additionalInfo\": [\n    {\n      \"key\": \"orderId\",\n      \"value\": \"12345\"\n    }\n  ],\n  \"amount\": \"100.50\",\n  \"calendar\": {\n    \"dueDate\": \"2030-09-01\",\n    \"validityAfterDue\": 30\n  },\n  \"currency\": \"BRL\",\n  \"debtor\": {\n    \"document\": \"39053344705\",\n    \"name\": \"João da Silva\"\n  },\n  \"description\": \"Fatura de servicos\",\n  \"discount\": {\n    \"modality\": \"VALUE_PER_CALENDAR_DAY_ADVANCE\",\n    \"value\": \"3.00\"\n  },\n  \"fine\": {\n    \"modality\": \"FIXED_VALUE\",\n    \"value\": \"10.00\"\n  },\n  \"interest\": {\n    \"modality\": \"VALUE_CALENDAR_DAYS\",\n    \"value\": \"1.50\"\n  },\n  \"keyType\": \"EVP\",\n  \"keyValue\": \"123e4567-e12b-12d1-a456-426655440000\",\n  \"merchantCity\": \"Goiania\",\n  \"merchantName\": \"Loja Teste\",\n  \"txId\": \"TX1234567890123456789012345\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.example.com/cob-hub/v1/collections/duedate")

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

request = Net::HTTP::Post.new(url)
request["Idempotency-Key"] = '<idempotency-key>'
request["X-Account-Id"] = '<x-account-id>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"abatement\": {\n    \"modality\": \"PERCENTAGE\",\n    \"value\": \"5.00\"\n  },\n  \"additionalInfo\": [\n    {\n      \"key\": \"orderId\",\n      \"value\": \"12345\"\n    }\n  ],\n  \"amount\": \"100.50\",\n  \"calendar\": {\n    \"dueDate\": \"2030-09-01\",\n    \"validityAfterDue\": 30\n  },\n  \"currency\": \"BRL\",\n  \"debtor\": {\n    \"document\": \"39053344705\",\n    \"name\": \"João da Silva\"\n  },\n  \"description\": \"Fatura de servicos\",\n  \"discount\": {\n    \"modality\": \"VALUE_PER_CALENDAR_DAY_ADVANCE\",\n    \"value\": \"3.00\"\n  },\n  \"fine\": {\n    \"modality\": \"FIXED_VALUE\",\n    \"value\": \"10.00\"\n  },\n  \"interest\": {\n    \"modality\": \"VALUE_CALENDAR_DAYS\",\n    \"value\": \"1.50\"\n  },\n  \"keyType\": \"EVP\",\n  \"keyValue\": \"123e4567-e12b-12d1-a456-426655440000\",\n  \"merchantCity\": \"Goiania\",\n  \"merchantName\": \"Loja Teste\",\n  \"txId\": \"TX1234567890123456789012345\"\n}"

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

{
  "abatement": {
    "modality": "PERCENTAGE",
    "value": "5.00"
  },
  "accountId": "019606a1-3b4c-7d8e-9f01-234567890abc",
  "additionalInfo": [
    {
      "key": "orderId",
      "value": "12345"
    }
  ],
  "amount": "100.50",
  "calendar": {
    "dueDate": "2030-09-01",
    "validityAfterDue": 30
  },
  "createdAt": "2030-08-20T10:30:00Z",
  "currency": "BRL",
  "debtor": {
    "document": "39053344705",
    "name": "João da Silva"
  },
  "description": "Fatura de servicos",
  "discount": {
    "modality": "VALUE_PER_CALENDAR_DAY_ADVANCE",
    "value": "3.00"
  },
  "emvPayload": "00020126360014br.gov.bcb.pix2562https://pix.example.com/qr/v2/cobv-abc1235204000053039865802BR5910Loja Teste6007Goiania62070503***63041D3F",
  "expiresAt": "2030-10-01T23:59:59Z",
  "externalId": "0196a7b2-4f60-7172-bd23-4567890abcde",
  "fine": {
    "modality": "FIXED_VALUE",
    "value": "10.00"
  },
  "id": "0196a7b2-1c3d-7e4f-8a90-1234567890ab",
  "interest": {
    "modality": "VALUE_CALENDAR_DAYS",
    "value": "1.50"
  },
  "isExpired": false,
  "keyType": "EVP",
  "keyValue": "123e4567-e12b-12d1-a456-426655440000",
  "locationUrl": "https://pix.example.com/qr/v2/cobv-abc123",
  "merchantCity": "Goiania",
  "merchantDocument": "39053344705",
  "merchantName": "Loja Teste",
  "organizationId": "0196a7b2-2d4e-7f50-9b01-234567890abc",
  "status": "ACTIVE",
  "txId": "TX1234567890123456789012345",
  "type": "DUE_DATE",
  "updatedAt": "2030-08-20T10:30:00Z"
}

{
  "code": "PIX-0030",
  "title": "Idempotency Key Required",
  "message": "The Idempotency-Key header is required for this operation and must be within the accepted length."
}

{
  "type": "https://errors.lerian.studio/v1/PIX-0225",
  "title": "Not Found",
  "status": 404,
  "detail": "The requested collection resource was not found at the provider.",
  "code": "PIX-0225"
}

{
  "type": "https://errors.lerian.studio/v1/PIX-0012",
  "title": "Conflict",
  "status": 409,
  "detail": "The entity already exists or conflicts with an existing resource.",
  "code": "PIX-0012"
}

{
  "code": "PIX-0031",
  "title": "Idempotency Key Conflict",
  "message": "The Idempotency-Key was already used with a different request."
}

{
  "type": "https://errors.lerian.studio/v1/PIX-0000",
  "title": "Internal Server Error",
  "status": 500,
  "detail": "The server encountered an unexpected error. Please try again later.",
  "code": "PIX-0000"
}

{
  "type": "https://errors.lerian.studio/v1/PIX-0223",
  "title": "Bad Gateway",
  "status": 502,
  "detail": "Provider adapter is unreachable.",
  "code": "PIX-0223"
}

{
  "type": "https://errors.lerian.studio/v1/PIX-0054",
  "title": "Gateway Timeout",
  "status": 504,
  "detail": "The request timed out. Please try again later.",
  "code": "PIX-0054"
}

{
  "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"
  }
}