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To turn chat history into useful CLAUDE.md rules, find the preferences and corrections you have had to repeat, rewrite the durable ones as short, checkable instructions, and save them at the scope that fits their audience. This is a manual distillation method—not an automatic Claude Code feature that mines every conversation.
What belongs in CLAUDE.md?
Claude Code describes CLAUDE.md as a place for instructions you would otherwise need to explain again. Anthropic’s documentation puts it plainly: “Treat CLAUDE.md as the place you write down what you’d otherwise re-explain.” The file provides context to guide Claude’s behavior; it is not an enforced configuration or security control.
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Repeated corrections can be useful clues: they may expose a project convention or stable preference that deserves to be recorded. The official guidance does not say Claude Code automatically extracts rules from chat history. You decide what to keep, turn it into an instruction, and maintain the file.
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How to distill chat history into rules
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Gather conversations about recurring work
Start with sessions about the project and the kinds of tasks you regularly ask Claude to do. In Claude Code’s CLI,
claude -ccontinues the most recent conversation in the current directory, whileclaude -r "<session>"resumes a conversation by session ID or name. These commands provide ways back to particular Claude Code sessions; they do not establish that every Claude conversation can be searched or exported the same way. -
Look for repetition, especially corrections
Notice preferences you have stated more than once, corrections that changed a later answer, or steps you repeatedly have to add to a request. A single task-specific instruction is less likely to be a durable rule than a pattern across similar work.
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Keep durable project knowledge
Prioritize information that will still matter on the next task: coding standards, architecture, naming conventions, common commands, and workflows. Leave out one-off requests and details Claude can readily derive from the current files.
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Rewrite each candidate as an action
Make the instruction specific enough to follow and verify. For example, replace “keep tests consistent” with the actual test command or the precise convention the project uses. Prefer an exact format, command, or file location when one is known.
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Add context or an example only when it clarifies
A short reason can help explain why a preference matters, and a representative example can resolve an ambiguity. Keep both selective: the goal is a usable instruction file, not a transcript of the conversations that inspired it. Anthropic’s prompting guidance favors clear, direct instructions and relevant examples and context.
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Put the rule at the right scope
Decide who should follow each rule before choosing where it belongs. Use project guidance for shared conventions, personal guidance for your own workflow preferences, and managed organization guidance for policies intended to apply across an organization.
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Review rules as the project changes
Remove instructions that have become obsolete and adjust rules when the codebase or workflow changes. Keep the file short, organized, and consistent so that durable guidance remains useful.
Choose a scope that matches the audience
Claude Code documents three relevant scopes. Project instructions can be shared with teammates; personal instructions are for your own use; managed instructions are for organization-level guidance.
| Scope | Intended audience | Documented location | Shared with project team? |
|---|---|---|---|
| Project | People and Claude working in a project | ./CLAUDE.md or ./.claude/CLAUDE.md |
Yes, when the file is included in the shared project |
| Personal | Your own Claude Code workflow | ~/.claude/CLAUDE.md |
No; it is user-level guidance |
| Organization | Organization-wide policy or guidance | Managed policy locations; consult the official documentation for the applicable setup | Intended for organization-level use |
Claude Code loads instruction files in the current directory and its ancestors at session start; files in subdirectories load on demand. That makes scope and placement practical choices: put team conventions where project collaborators can use them, and avoid putting a personal preference in shared instructions unless it is genuinely a project rule.
Best Value
What makes a rule useful?
- It is durable: likely to matter across future tasks, not just the request that prompted it.
- It is specific: says what to do, rather than expressing an aspiration such as “write better code.”
- It is verifiable: a reader can tell whether the instruction was followed.
- It has the right audience: team conventions, individual preferences, and organization policies are not mixed indiscriminately.
- It is concise: a rule gives enough context to guide work without copying the original conversation.
For example, a recurring request to use a project’s established naming pattern is a candidate for a rule if it applies across future work. Record the actual pattern rather than a vague instruction to “use good names.” If the pattern is ambiguous, add one short example that demonstrates it.
Keep manual instructions distinct from auto memory
Claude Code’s documentation distinguishes CLAUDE.md files you write to guide behavior from auto memory, which Claude maintains for learnings and patterns such as user corrections. They are related ways of carrying context forward, but they are not the same feature: manually distilling a repeated preference into CLAUDE.md remains your choice.
Quick Recap
Further guidance
- Claude Code memory documentation explains instruction files, scopes, placement, and loading behavior.
- Anthropic prompting guidance covers clear instructions, context, and examples.
- Claude Code CLI reference documents session continuation and resumption commands.
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