A 3-layer temporal RAG memory library for Python. Zero external dependencies. just stdlib + sqlite3. 43KB installed. Core idea: a self-growing tag dictionary. Day 1, every tag extraction calls your AI. Day 90, ~90% resolve from a local keyword map instantly. Cost goes down over time. L1: 3-day Markdown logs. L2: 30-day AI summaries. L3: SQLite FTS5 permanent archive (~1ms search). Works with any AI, OpenAI, Claude, Gemini, or local models. pip install sandclaw-memory