{
  "error": {
    "type": "permission_error",
    "code": "insufficient_api_credits",
    "message": "API credits exhausted. Purchase more credits to continue.",
    "request_id": "req_123"
  }
}

const response = await fetch('https://api.kallglot.com/v1/sessions', {
  method: 'POST',
  headers: {
    'Authorization': `Bearer ${process.env.KALLGLOT_API_KEY}`,
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    mode: 'bidirectional_translation',
    source_language: 'de',
    target_language: 'en'
  })
});

if (!response.ok) {
  const payload = await response.json();
  const error = payload.error;

  if (response.status === 402 && error.code === 'insufficient_api_credits') {
    console.error('Buy more API credits in the Developer Portal');
  } else if (response.status === 403 && error.code === 'organization_inactive') {
    console.error('Activate a subscription for this organization');
  } else if (response.status === 429) {
    const retryAfter = Number(response.headers.get('Retry-After') || '1');
    await sleep(retryAfter * 1000);
  } else {
    console.error(`${error.code}: ${error.message}`);
  }
}

import requests
import time

response = requests.post(
    'https://api.kallglot.com/v1/sessions',
    headers={
        'Authorization': f'Bearer {API_KEY}',
        'Content-Type': 'application/json'
    },
    json={
        'mode': 'bidirectional_translation',
        'source_language': 'de',
        'target_language': 'en'
    }
)

if response.status_code == 402:
    error = response.json()['error']
    if error['code'] == 'insufficient_api_credits':
        print('Purchase more API credits in the Developer Portal')
elif response.status_code == 429:
    time.sleep(int(response.headers.get('Retry-After', '1')))
elif response.status_code >= 400:
    error = response.json().get('error', {})
    print(f"{error.get('code')}: {error.get('message')}")