Memory & persistence · Question 4
What's the difference between creating a tone.md file, saving preferences to Claude's memory, and using a Project in Claude Chat?
| Mechanism | Where | Scope | Best for |
|---|---|---|---|
| Claude Memory | Anthropic-hosted | Across Chat | Light preferences ("bullets, not paragraphs"). |
| Chat Project | Anthropic-hosted | Inside one Project | Browser-side context for a client or initiative. |
tone.md / CLAUDE.md | Your disk | Per folder | Exact, reviewable instructions you run often. |
Use Memory for small habits; use Projects for browser-bound context; use Claude Code files when precision and ownership matter.