VS Code Extensions
Lumo AI Assistant

Lumo AI Assistant

by Evanly

A secure AI coding companion for VS Code with persistent chat, context-aware assistance, and AI-powered code suggestions

Downloads

701

Rating

3.0 / 5 (2)

Version

0.6.0

Last updated

Apr 19, 2026

Your secure AI companion for coding, embedded directly in VS Code.

VS Code License: MIT

✨ Features

  • 💬 Persistent Chat Interface — Beautiful sidebar chat with full conversation history that survives view switches and VS Code restarts.
  • 🧠 Context-Aware Responses — Automatically detects your active file, language, and selected code for intelligent assistance.
  • ⚡ Code Completion — Get AI-powered code suggestions via the command palette.
  • 🔐 Privacy-First — Powered by Proton's Lumo AI with end-to-end encryption.
  • 🎨 Custom Branded UI — Elegant purple gradient interface with custom mascot logo.

📦 Installation

  1. Download the lumo-assistant-0.5.0.vsix file.
  2. Open VS Code.
  3. Press Ctrl+Shift+P (or Cmd+Shift+P on Mac).
  4. Type "Extensions: Install from VSIX..." and select it.
  5. Choose the downloaded .vsix file.
  6. Reload VS Code when prompted.

From Source

bash

git clone https://github.com/EvAnLyOrG/lumo-assistant.git
cd lumo-assistant
npm install
npm run compile

Press F5 in VS Code to launch the extension in development mode.

⚙️ Configuration

Setting Up Authentication

  1. Open VS Code Settings (Ctrl+,).
  2. Search for "Lumo".
  3. Enter your Session ID in the lumo.sessionId field.

How to get your Session ID:

  1. Go to lumo.proton.me in your browser.
  2. Log in to your Proton account.
  3. Press F12 → Application → Cookies.
  4. Find the Session-Id cookie and copy its value.
  5. Paste it into the VS Code setting.

Note: Lumo Pro subscribers get unlimited usage. Free tier users have weekly quotas.

🎮 Usage

Chat Interface

  1. Click the Lumo icon in the Activity Bar (left sidebar).
  2. Type your message and press Enter or click Send.
  3. Your conversation history is automatically saved and restored.

Code Suggestions

  1. Open a code file.
  2. Type a partial line (e.g., const x =).
  3. Press Ctrl+Shift+P → "Lumo: Suggest Code".
  4. The AI will insert a context-aware suggestion at your cursor.

Clear Chat History

Click the "Clear Chat" button in the chat header to erase all conversation history.

⌨️ Keyboard Shortcuts

Command Shortcut Description
lumo.suggest Alt+/ Generate code suggestion at cursor

To customize: Open Keyboard Shortcuts (Ctrl+K Ctrl+S) and search for "Lumo".

🛠️ Commands

Command Description
Lumo: Sign in Authenticate with your Proton account
Lumo: Sign out Clear your authentication session
Lumo: Suggest Code Generate AI code suggestion

📋 Requirements

  • VS Code 1.85.0 or higher
  • A Proton account (for Lumo access)
  • Internet connection

🔒 Privacy & Security

This extension uses Proton's Lumo API, which features:

  • End-to-end encryption for all messages
  • Zero-access encryption (Proton cannot read your chats)
  • No data sold to third parties

Your Session ID is stored locally in VS Code's secure settings and never transmitted elsewhere.

🐛 Known Issues

  • Code completion may take 2-5 seconds due to API latency
  • Session IDs expire periodically and need to be refreshed
  • Inline completion (ghost text) is not yet supported

🗺️ Roadmap

  • Native OAuth authentication flow
  • Inline code completion (ghost text)
  • Multiple conversation threads
  • Custom system prompts
  • Streaming text display

📄 License

This project is licensed under the MIT License — see the license file for details.

🙏 Acknowledgments

  • Proton for the Lumo AI platform
  • VS Code Team for the excellent extension API
  • The open-source community for inspiration

Made with 💜 by Evanly