{"service":"Question Answering Service","version":"1.0.0","endpoints":{"/signup":"POST endpoint to create a new user account","/login":"POST endpoint to authenticate and get token","/logout":"POST endpoint to invalidate session","/me":"GET endpoint to get current user profile (requires auth)","/ask":"POST endpoint to ask a question (requires auth)","/departments":"GET endpoint to list available departments (public)","/health":"GET health check endpoint"}}