Session Memory Layer + PMM - Never Lose Context Again in Claude CoWork
Here's the problem Claude CoWork doesn't solve out of the box: continuity. Every session starts cold. Claude doesn't remember what you worked on last Tuesday, what decision you made and why, or what you told it to follow up on. You either re-explain everything at the start - or you lose the thread entirely. PMM (Poor Man's Memory), originally inspired by Millennial Cat's work (excellent stuff - definitely check out his threads!), solves the first layer. It gives Claude a structured knowledge base to read at session start. Your contacts, your rules, your processes, your decisions - all formatted as typed markdown files Claude loads before doing anything. But PMM solves what Claude knows about you. It doesn't solve what you and Claude worked on together yesterday. Session Memory Layer solves that. Together, they're a complete two-layer memory system. --- What Each Layer Does PMM — Curated domain knowledge - Who your contacts are and what they need - Your rules, decisions, and processes - Your terminology, preferences, and brand context - Loaded by workspace (sales, writing, legal, etc.) based on routing rules in CLAUDE.md Session Memory Layer - Working continuity - What was worked on in the last 10 sessions (rolling log) - What's still open and needs follow-up (persistent thread tracker) - Loaded at *every* session start, regardless of domain - Updated at *every* session end, automatically Think of PMM as your institutional knowledge base. Think of Session Memory as your working memory - the part that remembers "last time we were halfway through that proposal." ------- The Two Files Session Memory Layer lives in two markdown files. That's it. ### session-log.md A rolling 10-session history. Each entry is lean (about 6 fields, roughly 6–8 lines). It captures: - What was worked on - Decisions made - Files created or modified - Contacts touched - Open threads created - Threads closed Newest entry at the top. When you hit 11 sessions, the oldest one drops off.