Бэкенд вызова инструментов (function calling): изолированные HTTP-обработчики для LLM

{
  "type": "function",
  "function": {
    "name": "search_customer",
    "description": "Look up a customer by ID or email",
    "parameters": {
      "type": "object",
      "properties": {
        "query": { "type": "string", "description": "Customer ID or email" }
      },
      "required": ["query"]
    }
  }
}

export async function handler(event) {
  // Auth enforced at gateway — API key checked before this code runs
  const { query } = JSON.parse(event.body || '{}');
  if (!query) return { statusCode: 400, body: JSON.stringify({ error: 'query required' }) };
  const results = await db.customers.search(query); // DB_URL from workspace secrets
  return { statusCode: 200, body: JSON.stringify({ customers: results }) };
}