A3Code λ

Your AI pair programmer that thinks through problems and writes code with you.

What You Get

Lightning-fast access - Hit Cmd+Esc and A3Code appears. No menus, no clicking. Just you and the AI, instantly.

Context that actually works - Highlight code, switch tabs, reference files. A3Code sees what you're working on and understands the full picture.

Multiple sessions, zero friction - Need a fresh conversation? Cmd+Shift+Esc spins up a new terminal session. Your other conversations stay exactly where you left them.

Watch it think - Streaming responses show you the AI's reasoning in real-time. Collapsible thinking blocks let you dive deep or stay surface-level.

Shortcuts for everything - File references with Cmd+Option+K. Context commands with /context. Slash commands for quick actions. Every interaction is designed to keep your hands on the keyboard.

What This Is

An early release that's already changing how people code. Rough edges? Sure. But the core experience—fast, context-aware AI that actually helps—is here now.

We're iterating fast. Feedback shapes the next version. This is software that evolves with the people using it.

Quick Start

Click the λ in your sidebar. Type. Send. That's it.

Support

Something broken? Idea for improvement? We're listening.

Development

1. code sdks/vscode - Open the sdks/vscode directory in VS Code. Do not open from repo root.
2. bun install - Run inside the sdks/vscode directory.
3. Press F5 to start debugging - This launches a new VS Code window with the extension loaded.

Making Changes

tsc and esbuild watchers run automatically during debugging (visible in the Terminal tab). Changes to the extension are automatically rebuilt in the background.

To test your changes:

1. In the debug VS Code window, press Cmd+Shift+P
2. Search for Developer: Reload Window
3. Reload to see your changes without restarting the debug session