curl -X POST https://api.llmgenerator.com/api/v1/accounts \
  -H "Content-Type: application/json" \
  -d '{
    "email": "user@example.com",
    "firstName": "Jane",
    "lastName": "Doe",
    "company": "Acme Inc"
  }'

const response = await fetch(
  'https://api.llmgenerator.com/api/v1/accounts',
  {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({
      email: 'user@example.com',
      firstName: 'Jane',
      lastName: 'Doe',
      company: 'Acme Inc'
    })
  }
);

{
  "success": true,
  "message": "Account created successfully",
  "account": {
    "id": "user_abc123def456",
    "email": "user@example.com",
    "firstName": "Jane",
    "lastName": "Doe",
    "company": "Acme Inc",
    "plan": "free",
    "createdAt": "2026-01-27T10:00:00.000Z"
  },
  "apiKey": "llm_1706345678_initialkeyabc123"
}

{
  "message": "Validation error: Invalid email format"
}

{
  "message": "An account with this email already exists"
}