Copilot Mem

Persistent two-layer memory for GitHub Copilot. Automatically indexes your codebase and captures session knowledge — so Copilot remembers context across days, weeks and months.

What it does automatically

After installing, with zero configuration:

1. Indexes your code — every file in the workspace becomes searchable context for Copilot
2. Captures session memory — decisions, bug fixes, personal notes (Copilot is instructed to save them)
3. Re-indexes on file changes — keeps memory up to date as you code
4. Shows status in the bottom status bar: 🧠 1,234 memories

Installation

Drag the .vsix file onto the VS Code Extensions panel, or:

code --install-extension copilot-mem-1.0.0.vsix

Restart VS Code. Everything else is automatic.

Usage

• Start chatting with Copilot as normal — it will search and save memory automatically
• Ctrl+Shift+M — Save selected text to memory manually
• Command Palette → Copilot Memory: Show Memory Status
• Command Palette → Copilot Memory: Index Workspace (manual re-index)

Memory protocol

The extension creates .github/copilot-instructions.md with instructions that tell Copilot to:

• Search memory at the start of every conversation
• Save personal information immediately (no prompting needed)
• Save architectural decisions, bug fixes, and observations automatically
• Use memory instead of re-reading source files (saves tokens)

Requirements

• VS Code 1.90+
• GitHub Copilot extension
• Node.js 20+