curl --request POST \
  --url https://api.banka.pro/v1/companies \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "data": {
    "taxId": "1234567890",
    "title": "Örnek Ticaret A.Ş."
  }
}
'

import requests

url = "https://api.banka.pro/v1/companies"

payload = { "data": {
        "taxId": "1234567890",
        "title": "Örnek Ticaret A.Ş."
    } }
headers = {
    "Authorization": "Basic <encoded-value>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Basic <encoded-value>', 'Content-Type': 'application/json'},
  body: JSON.stringify({data: {taxId: '1234567890', title: 'Örnek Ticaret A.Ş.'}})
};

fetch('https://api.banka.pro/v1/companies', 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.banka.pro/v1/companies",
  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([
    'data' => [
        'taxId' => '1234567890',
        'title' => 'Örnek Ticaret A.Ş.'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Basic <encoded-value>",
    "Content-Type: application/json"
  ],
]);

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

curl_close($curl);

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

{
  "success": true,
  "data": {
    "id": "64f000000000000000000001",
    "taxId": "1234567890",
    "title": "Örnek Ticaret A.Ş.",
    "status": "active",
    "bankCodes": [],
    "creditCount": 0,
    "createdAt": "2026-10-17T09:00:00.000Z",
    "updatedAt": "2026-10-17T09:00:00.000Z"
  },
  "meta": {
    "requestId": "9cc0d3d1-1e63-4c90-b08f-90b6332e70ca",
    "timestamp": "2026-10-17T09:00:00.000Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_FAILED",
    "message": "pageSize 1-100 araliginda olmalidir.",
    "details": [
      {
        "field": "pageSize",
        "rule": "min:1,max:100"
      }
    ]
  },
  "traceId": "9cc0d3d1-1e63-4c90-b08f-90b6332e70ca"
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_FAILED",
    "message": "İstek doğrulanamadı.",
    "details": [
      {
        "field": "pageSize",
        "rule": "min:1,max:100"
      }
    ]
  },
  "traceId": "9cc0d3d1-1e63-4c90-b08f-90b6332e70ca"
}

{
  "success": false,
  "error": {
    "code": "FORBIDDEN",
    "message": "Bu islem icin yetkiniz bulunmuyor.",
    "details": []
  },
  "traceId": "9cc0d3d1-1e63-4c90-b08f-90b6332e70ca"
}

{
  "success": false,
  "error": {
    "code": "RESOURCE_NOT_FOUND",
    "message": "Banka hareketi bulunamadi.",
    "details": []
  },
  "traceId": "9cc0d3d1-1e63-4c90-b08f-90b6332e70ca"
}

{
  "success": false,
  "error": {
    "code": "COMPANY_EXISTS",
    "message": "Bu VKN ile kayitli bir firma zaten var.",
    "details": [
      {
        "field": "taxId",
        "rule": "unique"
      }
    ]
  },
  "traceId": "9cc0d3d1-1e63-4c90-b08f-90b6332e70ca"
}

{
  "success": false,
  "error": {
    "code": "PAYLOAD_TOO_LARGE",
    "message": "Istek govdesi izin verilen boyutu asiyor.",
    "details": []
  },
  "traceId": "9cc0d3d1-1e63-4c90-b08f-90b6332e70ca"
}

{
  "success": false,
  "error": {
    "code": "RATE_LIMITED",
    "message": "Istek limiti asildi. Daha sonra tekrar deneyin.",
    "details": []
  },
  "traceId": "9cc0d3d1-1e63-4c90-b08f-90b6332e70ca"
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_FAILED",
    "message": "İstek doğrulanamadı.",
    "details": [
      {
        "field": "pageSize",
        "rule": "min:1,max:100"
      }
    ]
  },
  "traceId": "9cc0d3d1-1e63-4c90-b08f-90b6332e70ca"
}