{"message":"NL2SQL API Service","version":"2.0.0","endpoints":{"POST /api/process_query":"Process natural language query and persist to Mongo","GET /api/get_sql/{transcript_id}/{chat_id}":"Get generated SQL","GET /api/get_tables/{transcript_id}/{chat_id}":"Get extracted table data","GET /api/get_description/{transcript_id}/{chat_id}":"Get LLM description","GET /api/get_graph/{transcript_id}/{chat_id}":"Get graph payload (Plotly JSON or summary data)","GET /api/query_results/poll":"Poll aggregated assistant response payloads","GET /api/transcripts":"List transcripts","POST /api/transcripts":"Create a new transcript","GET /api/transcripts/{transcript_id}":"Get a transcript","GET /api/transcripts/{transcript_id}/chats/{chat_id}":"Get a chat"},"mongo":true}