Turn on auto-memory so Claude keeps project notes across sessions

The problem

You re-explain the same project quirks, preferred package manager, and hard-won debugging lessons every time you open a fresh session.

The hack

Run `/memory`, enable auto-memory, and let Claude (or explicitly tell it to) save preferences into the per-project memory folder. The top of MEMORY.md loads automatically next time.

Why it works

Anthropic documents auto-memory as a built-in system separate from CLAUDE.md: short-term session learnings get consolidated into long-term per-repo notes without bloating the shared team file.

Setup

1. In a session, run `/memory` and confirm auto-memory is enabled. 2. Correct Claude once, then say: `remember: this repo uses Bun, never npm`. 3. Open the auto-memory folder from `/memory` and skim what was saved. 4. Start a new session and ask Claude what package manager the project uses — it should already know.

Source

Related

• → Tell Claude to update CLAUDE.md after every mistake
• → Keep CLAUDE.md under 200 lines so rules actually stick