Answer questions about Letta itself from the official documentation. Use whenever the user asks how Letta works, what Letta (or you) can do, or how to set up or configure providers, models, channels, skills, memory, schedules, permissions, self-hosting, pricing, or billing — any "how do I…" or "can Letta…" question about the Letta product. Fetch the docs before answering; never answer Letta product questions from memory alone.