ask_sourcemed
Ask SourceMed a clinical-evidence question. Calls the library's Ask endpoint, which retrieves only source-verified cards. Returns {"covered": true, "summary": ..., "shelves": [...]} with full shelf records (title, question, balance line, cards with results and sources/PMIDs), or {"covered": false, "shelves": []} when no shelf covers the topic. Carry the shelf citations when you use the numbers.
question必填
