Exemplo inicial
$const key = process.env.KAMBA_API_KEY;›if (!key) throw new Error('API key required');›const response = await fetch('https://api.kambasms.ao/credits/balance', {› headers: { 'X-API-Key': key }, redirect: 'error',› signal: AbortSignal.timeout(10000)›});›if (!response.ok) throw new Error('API request failed');