Prune Agent Memory

Audit, classify, and selectively forget stored memories. Memory is infrastructure. Forgetting is policy. This skill defines the policy.

Where manage-memory focuses on organizing and growing memory (what to keep, how to structure it), this skill focuses on the inverse: what to discard, how to detect decay, and how to ensure that forgetting is deliberate rather than accidental. The two skills are complementary and should be used together during periodic maintenance.

When to Use

• Memory files have grown large and no one has audited them for relevance
• Project state has shifted significantly (major refactors, renamed repos, completed milestones) and memories likely reference outdated context
• Retrieval quality has degraded — memories are producing noise instead of signal
• After a burst of activity that generated many memory entries without curation
• As a scheduled maintenance task (e.g., every 10-20 sessions or at project milestones)
• When multiple memory entries cover the same topic with slight variations (duplication drift)
• Before onboarding a new collaborator who will inherit the memory context

Inputs

• Required: Path to the memory directory (typically ~/.claude/projects/<project-path>/memory/)