curl -X POST "https://api.mielto.com/api/v1/collections/search" \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "query": "How to configure API authentication",
    "collection_id": "col_123456789",
    "search_type": "hybrid",
    "max_results": 10
  }'

{
  "results": [
    {
      "content": "API authentication can be configured using either API keys or Bearer tokens. To use API keys, include the X-API-Key header in your requests...",
      "score": 0.95,
      "metadata": {
        "document_title": "Authentication Guide",
        "section": "API Keys",
        "page": 1
      },
      "content_id": "content_123456",
      "source": "authentication-guide.pdf"
    },
    {
      "content": "When configuring authentication, ensure you store your API keys securely and never expose them in client-side code...",
      "score": 0.87,
      "metadata": {
        "document_title": "Security Best Practices",
        "section": "API Security",
        "page": 3
      },
      "content_id": "content_789012",
      "source": "security-guide.pdf"
    }
  ],
  "total_results": 2,
  "query": "How to configure API authentication",
  "search_type": "hybrid",
  "collection_id": "col_123456789",
  "execution_time_ms": 45.2
}