curl --request POST \
  --url https://api.centralcart.io/v1/webstore/affiliate/join \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'x-store-domain: <x-store-domain>' \
  --data '
{
  "ref_code": "joao"
}
'

import requests

url = "https://api.centralcart.io/v1/webstore/affiliate/join"

payload = { "ref_code": "joao" }
headers = {
    "x-store-domain": "<x-store-domain>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'x-store-domain': '<x-store-domain>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({ref_code: 'joao'})
};

fetch('https://api.centralcart.io/v1/webstore/affiliate/join', 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.centralcart.io/v1/webstore/affiliate/join",
  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([
    'ref_code' => 'joao'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "x-store-domain: <x-store-domain>"
  ],
]);

$response = curl_exec($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.centralcart.io/v1/webstore/affiliate/join"

	payload := strings.NewReader("{\n  \"ref_code\": \"joao\"\n}")

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

	req.Header.Add("x-store-domain", "<x-store-domain>")
	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.centralcart.io/v1/webstore/affiliate/join")
  .header("x-store-domain", "<x-store-domain>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"ref_code\": \"joao\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.centralcart.io/v1/webstore/affiliate/join")

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

request = Net::HTTP::Post.new(url)
request["x-store-domain"] = '<x-store-domain>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"ref_code\": \"joao\"\n}"

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

{
  "status": "affiliate",
  "id": 123,
  "name": "<string>",
  "email": "<string>",
  "ref_code": "<string>",
  "percent_commission": 123,
  "balance": 123,
  "min_withdraw": 123,
  "withdraw_settings": {
    "full_name": "<string>",
    "pix_key": "<string>",
    "pix_key_type": "CPF",
    "cpf_cnpj": "<string>"
  },
  "stats": {
    "total_sales": 123,
    "total_amount": 123,
    "d7_visits": 123
  },
  "links": [
    {
      "id": 123,
      "name": "<string>",
      "ref_code": "<string>",
      "url": "<string>",
      "sales": 123,
      "revenue": 123,
      "d7_visits": 123
    }
  ]
}

{
  "errors": [
    {
      "message": "Sessão inválida ou expirada.",
      "code": "CUSTOMER_UNAUTHENTICATED"
    }
  ]
}

{
  "errors": [
    {
      "message": "O auto cadastro de afiliados está desativado nesta loja."
    }
  ]
}

{
  "errors": [
    {
      "message": "Este código já está em uso. Escolha outro."
    }
  ]
}

{
  "errors": [
    {
      "message": "O código precisa ter pelo menos 3 caracteres."
    }
  ]
}