A small FastAPI service behind nginx, SQLite (WAL mode, no ORM) for storage, and a single-admin auth model — a signed cookie for the browser, a bearer token for agents. One generic entries table anchors most of the data model; a handful of dedicated tables (Places, Shopping, Calendar) exist where the relations outgrew a JSON blob.

It's also the MCP tool server this site's Claude agent connects through. The same store that holds Places, Inventory, transcripts, and the software queue is what an agent reads and writes when it works on this codebase — there's no separate "agent database."