Best Practices

# Store in environment variables
export CHAT402_API_KEY="pp_your_key_here"

# Never commit to git
echo "CHAT402_API_KEY=*" >> .gitignore

let totalCost = 0;

async function trackedChat(prompt) {
  const result = await chat(prompt);
  totalCost += result.cost;
  console.log(`Session cost: $${totalCost.toFixed(6)}`);
  return result;
}

async function chatWithRetry(prompt, maxRetries = 3) {
  for (let i = 0; i < maxRetries; i++) {
    try {
      return await chat(prompt);
    } catch (error) {
      if (error.response?.status === 402) {
        throw error; // Don't retry payment errors
      }
      if (i === maxRetries - 1) throw error;
      await new Promise(r => setTimeout(r, 1000 * (i + 1)));
    }
  }
}