SageTube turns YouTube channels into a searchable AI knowledge base. Import a whole channel, ask in plain English, and get answers cited to the exact video timestamp - click any citation to jump to that second on YouTube. Creators can publish a public Expert their audience can ask - and even charge per question (you keep 70%). Product Hunt exclusive: sign up via the launch link for a $20 starting wallet credit + 30% off your first 3 months of any paid plan.