Memory Defragmentation Skill

Requires Memory Filesystem (memfs)

This skill works by directly editing memory files on disk. It requires the memory filesystem feature to be enabled.

To check: Look for a memory_filesystem block in your system prompt. If it shows a tree structure starting with /memory/ including a system/ directory, memfs is enabled.

To enable: Ask the user to run /memfs enable, then reload the CLI.

This skill helps you maintain clean, well-organized memory blocks by spawning a subagent to decompose and reorganize memory files in-place.

The focus is on decomposition—splitting large, multi-purpose blocks into focused, single-purpose components—rather than consolidation.

Memory files live at ~/.letta/agents/$LETTA_AGENT_ID/memory/ and are synced to API blocks automatically by memfs sync on CLI startup.

When to Use