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# dim italics = a comment
Short-term
the running conversation
Long-term
facts saved for later
Schema
a tool's name + description
Route
pick the right tool for a request
Run it right here. Every cell runs in your browser — no install, no key. Run them in order, 1 → 4; they share memory. First Run downloads Python once (~10–15 MB).
Same deal as Week 1: everything here is real Python — the memory, the tool schema, the router. There's no LLM in this file at all; today's ideas (remembering, describing tools) are plumbing that sits around the model. In Colab you'll bolt these onto the Week-1 loop.