CtrlZ - AI Operation Undo System

Overview

CtrlZ is a Git-like undo system that records all "create/update/delete" operations performed by AI in each conversation round, allowing users to revert with one command.

Core Concepts

• Undo Session: All operations generated in one conversation round (user request + assistant response)
• Stack Mechanism: Default keeps 1 session, configurable to 3/5 sessions
• Auto Recording: Automatically backup and record before executing any modifications

Usage

User Commands

/ctrlZ              # Undo the most recent conversation round
/ctrlZ 3            # Undo the last 3 conversation rounds
/ctrlZ list         # List undoable operation records
/ctrlZ stack 5      # Set stack size to 5 undo units

Natural Language Triggers

• "undo last step"
• "undo"
• "revert recent changes"
• "ctrl+z"

AI Usage Guide (Important)

Before each file modification:

1. Start Session (at conversation beginning)

bash ~/.openclaw/skills/ctrlz/scripts/ctrlz.sh start <session_key> "<description>"

2. Record each operation (before modification)

bash ~/.openclaw/skills/ctrlz/scripts/ctrlz.sh record <session_id> <type> <path> [metadata]

Operation types:

• file_write - Write/overwrite file
• file_edit - Edit existing file
• file_delete - Delete file
• dir_create - Create directory
• exec_install - Install package/dependency
• exec_download - Download file

3. Execute actual operation

4. End Session (automatic at conversation end)

Complete Example

# 1. Start session
SESSION=$(bash ~/.openclaw/skills/ctrlz/scripts/ctrlz.sh start "Modify config" | jq -r '.session_id')

# 2. Record config.json modification
bash ~/.openclaw/skills/ctrlz/scripts/ctrlz.sh record $SESSION file_edit "/path/to/config.json"

# 3. Execute actual modification
edit /path/to/config.json ...

# 4. Record package installation
bash ~/.openclaw/skills/ctrlz/scripts/ctrlz.sh record $SESSION exec_install "npm:lodash"

# 5. Execute installation
exec "npm install lodash"

Execute Undo

When user says "undo":

# Undo the most recent 1 session
bash ~/.openclaw/skills/ctrlz/scripts/ctrlz.sh undo

# Undo the last 3 sessions
bash ~/.openclaw/skills/ctrlz/scripts/ctrlz.sh undo 3

Configuration

View current stack size

bash ~/.openclaw/skills/ctrlz/scripts/ctrlz.sh get-stack

Modify stack size (how many undo units to keep)

bash ~/.openclaw/skills/ctrlz/scripts/ctrlz.sh set-stack 5

View statistics

bash ~/.openclaw/skills/ctrlz/scripts/ctrlz.sh stats

List undoable operations

bash ~/.openclaw/skills/ctrlz/scripts/ctrlz.sh list

Database Structure

Location: ~/.openclaw/skills/ctrlz/undo.db

Tables:

• undo_sessions - Each undo unit (conversation round)
• undo_operations - Specific operation records
• settings - Configuration (stack size, etc.)

Backup Location: ~/.openclaw/skills/ctrlz/backups/

Important Notes

1. Package installation cannot be fully auto-undone - Will show list and manual removal commands
2. External command effects - Cannot track side effects of shell commands
3. Backup space - Clean up old backups periodically: ctrlz clear

Package Installation Handling

When undoing operations that include package installations:

📦 The following package installations cannot be auto-undone:
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
  1. npm:lodash
  2. npm:express
  3. pip:requests
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

💡 To remove, manually execute:
   npm uninstall lodash
   npm uninstall express
   pip uninstall requests

System Integration

Recommended to auto-start session at conversation begin and auto-cleanup at end. Can add logic to SOUL.md or AGENTS.md.

Testing

# Quick demo
bash ~/.openclaw/skills/ctrlz/scripts/demo.sh

# Or run full test cases
bash ~/.openclaw/skills/ctrlz/scripts/test_ctrlz.sh