Cowork Structured Multi-File Memory
Advanced memory architecture using `.claude/memory/` directory with indexed files: MEMORY.md as index, individual topic files (user_profile.md, project_context.md, decisions.md). Claude reads relevant files on demand rather than loading everything.
- Organize long-term project knowledge into searchable topic files
- Load only relevant memory files instead of everything at once
- Scale persistent memory across large multi-month projects
Single-file memory hits context limits quickly. The indexed multi-file system scales to thousands of facts while keeping each conversation focused. Claude only loads the memory files relevant to the current task.
Power users with large knowledge bases who need persistent memory across long-term projects
https://x.com/HurynPawel/status/2028867432143429733
By Paweł Huryn
How to Get It
In Claude Cowork: Open the Customize panel in the sidebar → Folder Instructions, and paste the instructions below. Claude will follow them automatically in that folder.
In Claude Code: Add these instructions to your project's CLAUDE.md file, or paste them into your conversation and ask Claude to save them.
## Structured Memory System I use a multi-file memory system in .claude/memory/ Files: - MEMORY.md — master index linking to all memory files - user_profile.md — my role, preferences, working style - feedback.md — corrections and things to remember - project.md — current project context and decisions Rules: - Read MEMORY.md at the start of every conversation - When I correct you or share a preference, save it to the right file - Update MEMORY.md index when adding new memory files - Keep entries concise with dates
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Reviewer notes
Personally Tested review. These are observations, not a security certification.
Personally tested — powers this observatory's own memory system. Scales well beyond single-file limits. Complexity tradeoff is worth it for serious users. No security concerns.
2026-03-29: Pattern from Paweł Huryn's PM guide. File structure: .claude/memory/MEMORY.md (master index with links), .claude/memory/user_profile.md, .claude/memory/project_*.md, .claude/memory/decisions.md. MEMORY.md tells Claude which files are relevant for which tasks. Instructions in CLAUDE.md: 'When you learn something new about me or this project, update the relevant memory file and add a pointer in MEMORY.md if it's a new file.' This is the pattern powering this observatory's own memory system.
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Evaluation
Personally tested — powers this observatory's own memory system. Scales well beyond single-file limits. Complexity tradeoff is worth it for serious users. No security concerns.