{"message":"RAG Document Search API","version":"1.0.0","description":"Upload documents and query them using RAG with LlamaIndex & Pinecone","endpoints":{"GET /":"API information and available endpoints","GET /health":"Health check - verify API and services are running","POST /upload-document":"Upload and process a document (.txt files only)","POST /query":"Query documents with full parameters (non-streaming)","POST /query/stream":"Query documents with SSE streaming response","GET /query/{index_name}":"Simple query with URL parameters (non-streaming)","GET /index/{index_name}/test":"Test if index exists and has content","DELETE /index/{index_name}":"Clear/delete an index"}}