Copilot Session Sync
Sync your GitHub Copilot chat sessions across all your devices, securely and automatically.
Features
- Cross-device sync — Access your Copilot chat history from any computer signed into the same GitHub account
- AES-256 encryption — All session data is encrypted with your personal passphrase before leaving your machine
- Private GitHub repo — Sessions are stored in an auto-created private repository under your GitHub account
- Automatic sync — Pulls on startup and pushes periodically (configurable interval)
- Per-workspace control — Exclude specific workspaces from syncing
- Conflict resolution — Last-write-wins with automatic backups of overwritten versions
Install
Install from the VS Code Marketplace or search "Copilot Session Sync" in VS Code Extensions.
Getting Started
- Install this extension from the VS Code Marketplace
- The extension activates automatically on startup
- Sign in to GitHub when prompted (requires
repo scope)
- Create an encryption passphrase (must be the same on all your devices)
- Your Copilot chat sessions will begin syncing automatically
On a second device
- Install the extension
- Sign in with the same GitHub account
- Enter the same passphrase you used on your first device
- Your sessions will be pulled from the remote repository
Commands
| Command |
Description |
Copilot Session Sync: Sync Now |
Trigger an immediate sync |
Copilot Session Sync: Set Encryption Passphrase |
Change your encryption passphrase |
Copilot Session Sync: Toggle Sync for This Workspace |
Exclude or include the current workspace |
Copilot Session Sync: View Sync Status |
Show sync status, last sync time, and session count |
Copilot Session Sync: Reset Sync State |
Clear local sync state (does not delete remote data) |
Settings
| Setting |
Default |
Description |
copilotSessionSync.enabled |
true |
Enable or disable sync |
copilotSessionSync.syncIntervalMinutes |
5 |
Sync interval in minutes |
copilotSessionSync.excludedWorkspaces |
[] |
Workspace paths to exclude from sync |
copilotSessionSync.maxSessionAgeDays |
90 |
Only sync sessions newer than this many days |
copilotSessionSync.repoName |
copilot-session-sync |
Name of the private GitHub repo for storage |
How It Works
- Reading sessions: The extension reads Copilot chat session JSON files from VS Code's local storage directory
- Encryption: Each session is encrypted with AES-256-GCM using a key derived from your passphrase (PBKDF2, 100k iterations, SHA-512)
- Storage: Encrypted sessions are pushed to a private GitHub repository created under your account
- Sync: On startup and periodically, the extension compares local and remote session timestamps and syncs the newer version
- Conflict handling: When the same session is modified on two devices, the newer version wins and the older is backed up
Privacy & Security
- Your passphrase never leaves your device — only encrypted data is uploaded
- The GitHub repo is private — only accessible to your GitHub account
- AES-256-GCM authenticated encryption prevents tampering
- No telemetry — the extension collects no usage data
- You can delete the repo at any time to remove all synced data
Requirements
- VS Code 1.85.0 or later
- A GitHub account with Copilot access
- Desktop VS Code (not VS Code Web)
Known Limitations
- Copilot chat session storage format is undocumented and may change with VS Code updates
- VS Code Web is not supported (no file system access to local sessions)
- Very large sessions (>1 MB) may require extra API calls
- The extension reads from VS Code's internal storage, which is not a public API
License
MIT
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