{"status":"ok","message":"RAG service is running — Ultimate RAG pipeline active","stats":{"totalDocuments":0,"dateRange":{"earliest":"","latest":""},"sources":[],"categories":[],"lastUpdated":"2026-10-26T16:22:44.142Z"},"endpoints":{"ask":"POST /api/rag - Ask questions (Ultimate RAG)","askAdvanced":"POST /api/rag/ask - Ask with full feature toggles","search":"POST /api/rag/search - Search without generating response","stream":"POST /api/rag/stream - Streaming RAG response","similar":"GET /api/rag/similar/:id - Find similar articles","summary":"GET /api/rag/summary/:crypto - Summarize crypto news","stats":"GET /api/rag/stats - Get vector store statistics","batch":"POST /api/rag/batch - Batch parallel queries (1-10)","feedback":"POST /api/rag/feedback - Submit feedback on responses","metrics":"GET /api/rag/metrics - Observability metrics"}}