Project Memory

Project memory generator

Create CLAUDE.md files that transfer institutional knowledge, not obvious information. Think like a senior journalist onboarding a competent colleague, you don't explain how journalism works, you explain YOUR project's quirks.

CLAUDE.md is advisory, not enforced

Anthropic is explicit on this point: CLAUDE.md content is delivered as a user message after the system prompt. Claude reads it and tries to follow it, but there's no guarantee of strict compliance, especially with vague or conflicting instructions. Source: https://code.claude.com/docs/en/memory

This affects how you write a CLAUDE.md and what you put elsewhere:

If an instruction is "block writes to published/" or "run accessibility check before commit," that belongs in a hook, not CLAUDE.md. If it's "fact-check workflow" or "FOIA-letter drafting," that's a skill. CLAUDE.md is the place for things Claude must hold in every session.

What belongs in CLAUDE.md

Anthropic publishes an explicit include/exclude table for what makes an effective CLAUDE.md. Source: https://code.claude.com/docs/en/best-practices

For journalism projects, translate to:

• Include: AP-style preferences that override defaults, "always cite source URLs," byline policy, embargo handling, source-protection invariants, CMS quirks (e.g., "story slugs must be unique across ALL desks, not just metro").
• Exclude: "We verify facts before publishing" (every journalist knows this), "use AP Style" without specifics (every journalism stack does this), framework documentation, generic git commands.

The deletion test

For every line you write, ask: "Would removing this cause Claude to make mistakes?" If not, cut it.

Size guidance: target under 200 lines

Anthropic's explicit guidance as of 2026: target under 200 lines per CLAUDE.md file. Longer files consume more context and reduce adherence. Bloated CLAUDE.md files cause Claude to ignore the actual rules. Source: https://code.claude.com/docs/en/best-practices

Going over 200 lines is a signal to use one of these instead:

• .claude/rules/ with paths: frontmatter, file-pattern-scoped rules that load only when Claude works with matching files. Replaces @import chains as the size-management mechanism. (Note: @imports no longer help with context size, Anthropic explicitly notes that imports load fully at launch.)
• Skills, for multi-step procedures that don't need to be in every session.
• Hooks, for deterministic enforcement.

Where to put CLAUDE.md files

CLAUDE.md location precedence (more specific wins). Source: https://code.claude.com/docs/en/memory

The ./.claude/CLAUDE.md location and managed-policy tier are 2026 additions to Anthropic's documented locations. Templates that say "put this at project root" should mention ./.claude/CLAUDE.md as an equally valid location.

AGENTS.md interop

If your repo already has AGENTS.md for other coding agents (Cursor, Codex, etc.), don't duplicate the content. Anthropic's recommended pattern is @AGENTS.md import (or symlink) with Claude-specific overrides appended:

@AGENTS.md

## Claude Code
- Use plan mode for changes under `src/billing/`.

For journalism teams using multiple agents, this matters, shared editorial standards (AP-style preferences, source-handling invariants, fact-check protocols) belong to the org, not one agent.

Anti-patterns to warn about

Anthropic now names these explicitly. Source: https://code.claude.com/docs/en/best-practices and https://code.claude.com/docs/en/memory

1. The over-specified CLAUDE.md. Bloat causes Claude to ignore real rules. If Claude keeps doing something despite a CLAUDE.md rule, the file is probably too long and the rule is getting lost.
2. Conflicting instructions across nested CLAUDE.md files. Claude picks one arbitrarily. Review periodically to remove outdated rules.
3. Hand-coded standard conventions Claude already knows. "Use proper indentation," "write clean code", delete.
4. Detailed API docs / file-by-file descriptions / info that changes frequently. Link to the canonical source instead.
5. Secrets in CLAUDE.md. It's checked into git. Use CLAUDE.local.md (gitignored) for sandbox URLs, test credentials, personal overrides.

Minimum-viable CLAUDE.md (~6 lines)

Anthropic ships this as the canonical starter. Templates should default to something this short and grow only as needed:

# Code style
- Use ES modules (import/export) syntax, not CommonJS (require)
- Destructure imports when possible

# Workflow
- Be sure to typecheck when you're done making a series of code changes
- Prefer running single tests, and not the whole test suite, for performance

Each of the 6 journalism templates ships a sub-30-line "starter" variant alongside the fuller version. Adopt incrementally.

Auto memory is separate from CLAUDE.md

As of Claude Code v2.1.59+, there's a second memory mechanism alongside CLAUDE.md: auto memory, where Claude writes notes to itself in ~/.claude/projects/<project>/memory/ based on your corrections. The first 200 lines of that directory's MEMORY.md are loaded into every session. Source: https://code.claude.com/docs/en/memory

Practical implication for templates: don't ask the user to manually write down "things Claude learns over time", that's auto memory's job now. CLAUDE.md is for facts you write up front; auto memory is for things Claude notices.

Voice guidelines

• Direct and terse
• Like notes you'd leave for yourself
• No marketing language
• No "Welcome to..." introductions
• No "This project is..." padding

Example: good vs bad

Bad (too verbose, obvious):

# CLAUDE.md

## Overview
Welcome to our newsroom's story tracking system! This is a
web application built with React and Node.js that helps
editors and reporters collaborate on stories.

## Getting started
First, make sure you have Node.js installed. Then:
npm install
npm start

Good (institutional knowledge only):

# CLAUDE.md

## Overview
Story tracker for metro desk. React + Supabase.

## Gotchas
- Story slugs must be unique across ALL desks, not just metro
- "Hold" status doesn't stop the autopublish cron, use "Kill"
- Reporter dropdown caches for 1 hour; new hires won't appear

## Commands
npm run sync-ap  # Pull latest from AP, runs automatically at :15

## Credentials
Supabase key in 1Password "Metro Desk" vault, not .env

Journalism-specific templates

Templates are in the templates/ directory:

Template selection guide

What are you building?
├── Tool for the newsroom → editorial-tool.md
├── Site for an event → event-website.md
├── Recurring content series → publication.md
├── One-time investigation → research-project.md
├── Publishing automation → content-pipeline.md
└── Archive/preservation → digital-archive.md

How to use templates

1. Copy the appropriate template to ./CLAUDE.md OR ./.claude/CLAUDE.md at your project root
2. Fill in the bracketed placeholders with YOUR specifics
3. Delete any sections that don't apply
4. If your project uses other agents (Cursor, Codex), add @AGENTS.md at the top instead of duplicating shared content
5. Add project-specific gotchas as you discover them, but stay under 200 lines
6. Move multi-step procedures to skills, deterministic enforcement to hooks

Last currency sweep

2026-05-09. Sources verified: code.claude.com/docs/en/memory, code.claude.com/docs/en/best-practices.

The best CLAUDE.md files are written by people who've been burned by the quirks they're documenting.