Authentication

sk_live_abc123def456...  # Production key
sk_test_abc123def456...  # Test/sandbox key

import { S4Kit } from 's4kit';

const client = new S4Kit({
  apiKey: 'sk_live_abc123...'
});

const client = new S4Kit({
  apiKey: process.env.S4KIT_API_KEY
});

# .env file
S4KIT_API_KEY=sk_live_abc123...

// Load with dotenv (if not using Bun)
import 'dotenv/config';
import { S4Kit } from 's4kit';

const client = new S4Kit({
  apiKey: process.env.S4KIT_API_KEY
});

// .env is loaded automatically
import { S4Kit } from 's4kit';

const client = new S4Kit({
  apiKey: process.env.S4KIT_API_KEY
});

import { RateLimitError } from 's4kit';

try {
  const data = await client.A_BusinessPartner.list();
} catch (error) {
  if (error instanceof RateLimitError) {
    console.log(`Rate limited. Retry after ${error.retryAfter} seconds`);
  }
}

import { S4Kit } from 's4kit';

const client = new S4Kit({
  apiKey: process.env.S4KIT_API_KEY,
  connection: 'sandbox'
});

try {
  // Make a simple request to verify authentication
  const partners = await client.A_BusinessPartner.list({ top: 1 });
  console.log('Authentication successful!');
} catch (error) {
  console.error('Authentication failed:', error.message);
}