Memory
4-Layer Memory Guide
Four files, a write step, and a read step that give Claude layered memory so session 50 knows everything from session 1.
Published June 2026
Look inside
One sticky note is not memory. Memory is layered. Four files, a write step that runs at session end, and a read step that runs at session start. That is the whole system. WORKING.md holds the current session, EPISODIC.md is append-only history, SEMANTIC.md stores durable facts, and IDENTITY.md defines who the agent is. Session 50 knows everything from session 1.
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