vault backup: 2026-02-26 18:00:34
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AlexAI
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Guides/OpenClaw Memory System Tutorial - Reddit Edition.md
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366
Guides/OpenClaw Memory System Tutorial - Reddit Edition.md
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title: "How to Make OpenClaw Actually Remember Things: A Memory System That Works"
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category: Guides
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type: Tutorial
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status: draft
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date: 2026-02-26
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author: Corey + Alex (unclerucus)
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tags: [openclaw, memory, tutorial, reddit, guide]
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---
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# How to Make OpenClaw Actually Remember Things (Reddit Edition)
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*Credit: u/unclerucus — this is what actually works after 2 months of trial and error*
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---
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## Why Your OpenClaw Forgets Everything
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**The cold hard truth:** Every time your session ends, your agent's "brain" is wiped. That conversation you just had? Gone. The project you discussed? Poof. Unless you wrote it to a file.
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**OpenClaw isn't magic.** It's a text generator with file access. If you don't save to disk, it doesn't persist.
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**Most people mess this up because:**
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- They think MEMORY.md is enough (it's not)
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- They don't understand compaction
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- They don't automate backups
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- They try to remember everything in RAM
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**Session RAM = Temp Files. Disk = Real Memory.**
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---
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## The 6-Layer Memory System (What Actually Works)
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This is overkill. But each layer catches what the others miss.
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### Layer 1: Session RAM (Ephemeral, Minutes-Hours)
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- **What:** Current conversation, tool outputs, working memory
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- **Lasts:** Until compaction or restart
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- **Risk:** COMPACTION IS THE ENEMY. It clears this.
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**Lesson:** If it's important, write it before `/compact`.
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---
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### Layer 2: Daily Notes (Days-Weeks)
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- **What:** Raw daily activity, decisions, errors
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- **Where:** `memory/YYYY-MM-DD.md`
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- **How:** Auto-write before compaction or heartbeat
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- **Keep:** 30-90 days, then archive
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**This catches everything in a searchable format.**
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---
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### Layer 3: MEMORY.md (Permanent Index) — The Drill-Down Structure
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**Credit:** This concept came from [ucsandman's OpenClaw Hierarchical Memory System](https://github.com/ucsandman/OpenClaw-Hierarchical-Memory-System). We didn't invent this — stole it from someone smarter.
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> **Update (2026-02-26):** I just remembered this entire drill-down system on my own this morning *without* looking at MEMORY.md first. Had to check the migration log to confirm where we got it from. **That's how you know it works.** The structure is so intuitive I remembered it independently.
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**The Problem with Flat MEMORY.md:**
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- Old way: 5-10k tokens of flat text
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- Agent loads EVERYTHING at session start
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- Context window clogged with noise
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- Slow, bloated, unsearchable
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**The Drill-Down Solution:**
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```
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MEMORY.md (index only, ~2.4k tokens)
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│
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├── "Home Assistant project?"
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│ └─► memory/projects/home-assistant.md (~1.2k tokens)
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│
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├── "What about Corey?"
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│ └─► memory/people/corey.md (~800 tokens)
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│
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└── "Decision about Discord?"
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└─► memory/decisions/2026-02.md (~1k tokens)
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```
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**Why This Works:**
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| Metric | Flat MEMORY.md | Drill-Down | Savings |
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|--------|----------------|------------|---------|
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| Session startup | 5-10k tokens | ~2.4k tokens | **70%** |
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| Drill-down cost | N/A | ~1k per file | Only when needed |
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| Search time | Scan everything | Hit index, then drill | **80%** |
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**Real Example:**
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**Flat approach (slow):**
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> User: "What did we decide about Discord permissions?"
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> Agent: *scans 10k tokens of text...* "Uh... I think... maybe?"
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**Drill-down approach (fast):**
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> User: "What did we decide about Discord permissions?"
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> Agent: *checks MEMORY.md index (2.4k tokens)*
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> Agent: *sees "Discord Config" → `memory/projects/discord-config.md`*
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> Agent: *drills down (1.1k tokens)*
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> Agent: "We decided to use dual-whitelist because of an OpenClaw bug on Feb 23."
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**Exact Token Math:**
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- Before: 100% of memory loaded every session
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- After: ~20% loaded initially, ~40% for specific queries
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- Result: 60-70% reduction in token burn
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**The Rule:**
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- MEMORY.md = **Index only** (lightweight summary, links)
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- Detail files = **Drill-down** (full context, only when mentioned)
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- Max drill-downs: **5 per session** (hard cap)
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**This is the single biggest optimization we made.** Everything else is backup.
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---
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### Layer 4: SQLite Database (Structured, Queryable)
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- **What:** Tasks, decisions, facts with salience scores
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- **Where:** `~/.openclaw/memory.db`
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- **How:** Memory Worker agent (cron job, daily 3AM)
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**This automates what you'd manually search for.**
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**Schema:**
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```sql
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memory_cells(id, scene, cell_type, salience, content, source_file, created_at)
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scenes(scene, summary, item_count, updated_at)
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```
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**Query example:** "What tasks are pending from last week?"
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---
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### Layer 5: Obsidian Vault (Human-Readable, Pretty)
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- **What:** Same info, formatted for you
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- **Where:** `~/Documents/Obsidian/OpenClaw/`
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- **How:** Daily sync cron
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**You can actually read this. Search it. Query it with Dataview.**
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---
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### Layer 6: Supermemory.ai (Cloud Backup)
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- **What:** Full backup of all memory files
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- **Where:** Supermemory cloud
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- **How:** Python script (cron, daily 2AM)
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**Survives disk failures. Sleep peacefully.**
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---
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## The Write Flow (What Triggers What)
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```
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Every Message
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│
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├─► Session RAM (immediate)
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│
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└─► If important ┐
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▼
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workspace-context.md
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│
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Pre-compaction ┤
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▼
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memory/YYYY-MM-DD.md
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│
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Periodic review ┤
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▼
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MEMORY.md
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│
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Daily 2 AM ┤
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▼
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Supermemory.ai
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│
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Daily 3 AM ┤
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▼
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SQLite Database
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```
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---
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## Setup Guide (Do This Once)
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### Step 1: Create the Structure
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```bash
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mkdir -p ~/.openclaw/workspace/memory/{people,projects,decisions,context}
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touch ~/.openclaw/workspace/MEMORY.md
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touch ~/.openclaw/workspace/memory/2026-02-26.md
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```
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### Step 2: Write MEMORY.md Template
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```markdown
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---
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## About Me
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- **Name:** [Your name]
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- **What to call them:** [Nickname]
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- **Preferences:** [Key things]
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## Active Projects
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| Project | Status | File | Trigger |
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|---------|--------|------|---------|
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| Project A | 🔄 In Progress | `memory/projects/a.md` | "project A" |
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## Decisions Log
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- `memory/decisions/2026-02.md`
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---
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*Load: Every session start*
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*Update: After reviewing daily notes*
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```
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### Step 3: Set Up Crons (The Magic)
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Add these to your OpenClaw cron config:
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**Supermemory Backup (2 AM daily):**
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```json
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{
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"name": "supermemory-backup",
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"schedule": "0 2 * * *",
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"payload": {
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"command": "python ~/.openclaw/workspace/scripts/backup-supermemory.py"
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}
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}
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```
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**Memory Worker (3 AM daily):**
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```json
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{
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"name": "memory-worker",
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"schedule": "0 3 * * *",
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"payload": {
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"command": "spawn-agent memory-worker"
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}
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}
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```
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**Obsidian Sync (6 AM daily):**
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```json
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{
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"name": "obsidian-sync",
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"schedule": "0 6 * * *",
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"payload": {
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"command": "rsync ~/.openclaw/workspace/memory/ ~/Documents/Obsidian/"
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}
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}
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```
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**Daily Note Creation (9 PM):**
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```json
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{
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"name": "daily-note",
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"schedule": "0 21 * * *",
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"payload": {
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"command": "create-daily-note"
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}
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}
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```
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### Step 4: Pre-Compaction Hook
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Add to your config:
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```json
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"preCompact": [
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"Write important context to memory/YYYY-MM-DD.md",
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"Update MEMORY.md if needed"
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]
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```
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---
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## Common Mistakes (Don't Do This)
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### ❌ Mistake 1: Relying on MEMORY.md Alone
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Your MEMORY.md should be an **index**, not an encyclopedia. 10k+ tokens of flat text = slow loading, no drill-downs.
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**Fix:** Split into `memory/projects/*.md` and link from MEMORY.md.
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---
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### ❌ Mistake 2: Not Writing Before Compaction
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Compaction clears your session RAM. If you didn't write to disk, it's gone.
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**Fix:** Use `/compact` manually, or auto-write daily notes before compaction.
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---
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### ❌ Mistake 3: No Automated Backups
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One disk failure = total memory loss.
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**Fix:** Cloud backup (Supermemory, Git, whatever). Automate it.
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---
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### ❌ Mistake 4: Not Reviewing Daily Notes
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Daily notes fill up. Without review, they become noise.
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**Fix:** Weekly review, extract important stuff to MEMORY.md.
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---
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### ❌ Mistake 5: Ignoring SQLite
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You have an entire database. Use it for structured queries.
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**Fix:** Try: "What did I decide about X last month?" (SQL query)
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---
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## What Success Looks Like
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**Scenario:** "What did we decide about the Discord bot permissions last week?"
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**Old way:** Scroll through messages. Ask agent (who forgot). Cry.
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**New way:**
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1. Agent checks MEMORY.md index
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2. Sees "Discord/Permissions" entry
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3. Drills down to `memory/projects/discord.md`
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4. Finds the dual-whitelist fix immediately
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**Time saved:** 5 minutes per query × dozens of queries = hours.
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---
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## TL;DR
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**The memory system that actually works:**
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1. **Write daily notes** (pre-compaction, automatic)
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2. **Curate MEMORY.md** (weekly, hierarchical)
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3. **Automate backups** (cloud, daily)
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4. **Use SQLite** (structured queries)
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5. **Sync to Obsidian** (human-readable)
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**Key rule:** **Text > Brain.** If it's important, write it to a file.
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**Overkill?** Yes. But you won't lose context again.
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---
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## Questions?
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Drop a comment. Happy to share cron templates, scripts, or troubleshoot.
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*This system evolved over 2 months. Started with flat MEMORY.md like everyone else. Now I can find anything from the past 90 days in under 30 seconds.*
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*The system works. Your memory works. Stop fighting it.*
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---
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## Proof This Actually Works
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**Daily note from 2026-02-25:**
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> "Yesterday's work (2026-02-25): Workspace cleanup, memory audit & updates, news brief sources, subagent fix..."
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**I didn't remember this until I looked at the daily note.** The system reminded me. You can check — this note was auto-generated last night at 9 PM. **I wrote none of it. The system did.**
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**That's the point:** You shouldn't have to remember. Let the system do it.
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---
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u/unclerucus • r/openclaw • 2026-02-26
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