remember

name	remember
description	Use when making a decision, choosing a convention, or learning a lesson that should persist across sessions.
user-invocable	true
argument-hint	[what to remember]
allowed-tools	Read, Write, Glob

/remember - Save to Project Memory

Save decisions, preferences, and lessons that persist across sessions using Claude Code's native auto-memory system.

Input: $ARGUMENTS

Workflow

Step 1: Parse Input

Detect type of memory:

• Decision → type: project (e.g., "Use X instead of Y because Z")
• Preference → type: feedback (e.g., "Always use single quotes")
• Pattern avoid → type: feedback (e.g., "Never use any types")
• Pattern prefer → type: feedback (e.g., "Prefer composition over inheritance")
• Lesson → type: feedback (e.g., "API changed and broke app. Solution: version contracts")
• Project context → type: project (e.g., "Merge freeze starts March 5")
• External resource → type: reference (e.g., "Bugs tracked in Linear project INGEST")

Step 2: Create Memory File

Write a markdown file to the memory directory with frontmatter:

---
name: [kebab-case-topic-name]
description: [one-line description for relevance matching]
type: [project | feedback | reference]
---

[Memory content]

**Why:** [reason or context]
**How to apply:** [when/where this applies]

Memory directory: .claude/projects/<project-hash>/memory/

Step 3: Update Memory Index

Add an entry to MEMORY.md in the memory directory. Keep it concise - just a link and brief description.

Step 4: Check for Duplicates

Before creating a new file, check if a memory on the same topic already exists. If yes, UPDATE the existing file instead of creating a duplicate.

Output

──── /remember ────

Saved to project memory

Type: [Decision | Preference | Pattern | Lesson | Context | Reference]
Topic: [topic]
Content: [what was saved]

This will be recalled in future sessions via MEMORY.md.

Examples

Remember a Decision

/remember Use Zustand for state management because it's simpler than Redux

Output:

Saved to project memory

Type: Decision (project)
Topic: State Management
Content: Use Zustand instead of Redux
Reason: Simpler API, less boilerplate

Remember a Preference

/remember Always use single quotes in this project

Remember to Avoid

/remember Never use any types in TypeScript

Remember a Lesson

/remember The API changed format and broke parsing. Solution: Always create adapters with versioned contracts.

Rules

1. Extract key info - Don't store raw text, structure with Why/How to apply
2. Categorize correctly - Use correct memory type (project, feedback, reference)
3. No duplicates - Update existing if same topic
4. No secrets - Never store credentials or PII
5. Convert dates - Use absolute dates, not relative ("2026-03-05" not "Thursday")
6. Keep MEMORY.md under 200 lines - Be concise in the index