{"message":"RAG Agent API","authentication":{"enabled":true,"method":"Bearer token","header":"Authorization: Bearer <api_key>","note":"Include your API key in the Authorization header for all requests","public_endpoints":["/","/health","/batch-query-login-page"]},"format":"OpenAI compatible","features":{"streaming":"Real-time response streaming via Server-Sent Events (SSE)","citations":"Source citations with page numbers for every answer","token_tracking":"Real token usage from AWS Bedrock","hybrid_search":"Combined vector similarity and keyword search","chat_history":"Persistent conversation history with metadata"},"note":"All requests and responses use OpenAI chat completion format with 'role' and 'content' fields"}