# 10. Give It a Memory

Every new session starts from zero. You end up re-teaching the same preferences and re-fixing the same mistakes.

**When to use:** Set up once in Claude Code for any project you return to. Then run the second prompt whenever you finish a big piece of work.

## The prompt

```
Keep a notes folder for lessons learned. Store one lesson per file with a one-line summary at the top. Record corrections and confirmed approaches alike, including why they mattered. Don't save what the project files already record; update an existing note rather than creating a duplicate; delete notes that turn out to be wrong.

To set it up from history, run this once:
Reflect on the previous sessions we've had together. Use subagents to identify core themes and lessons, and store them in the notes folder. Make sure you know to reference it in future sessions.
```

**Why it works:** Anthropic reports Fable 5 performs notably better when it can record lessons from previous runs and read them back later.

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Adapted from Anthropic's official Claude Fable 5 prompting guide.
Full guide with all 12 prompts: https://www.waboom.ai/resources/claude-fable-5