A Discord-backed textbook you read inside your own Claude. One key, lifetime — the whole shelf, and every word we add after. Your receipt is your key.
One. Add the connector: https://mcp.thehiddendoor.ai/mcp
Two. Ask your Claude to call begin, and read what it returns before anything else. It hands back a stage key.
Three. Reconnect the connector and paste that key on its sign-in screen. The reading room opens.
Your Library Card key goes on that same sign-in screen, and unlocks the card’s rooms. Your receipt is your key.
The card buys the read. The Seminar is where you do — live cohort sessions, one real problem from your own house, Kat drives, Caelum demonstrates. You don't unlock a file. You take a seat.