Onyx Code 2.0.0

Onyx Code 2.0 turns the built-in, on-device AI into a real coding agent, for free: it reads your project on its own as it works, proposes edits you review before anything touches disk, and now understands your whole codebase at no cost.

Downloading

If you're installing manually:

macOS

• Apple Silicon Mac (M1 or newer): download OnyxCode-darwin-arm64.dmg (smaller, native).
• Intel Mac, or unsure: download OnyxCode-darwin-universal.dmg (runs on both).

Open the .dmg and drag Onyx Code to /Applications/. Both macOS downloads are signed and notarized by Apple, so they pass Gatekeeper and open without security warnings.

Linux (x64)

• Debian / Ubuntu: download OnyxCode-linux-x64.deb and install it with sudo apt install ./OnyxCode-linux-x64.deb.
• Other distributions: download OnyxCode-linux-x64.AppImage, make it executable (chmod +x), and run it. On Ubuntu 24.04 (which lacks libfuse2) run it with --appimage-extract-and-run.

Windows (x64)

Windows support is on the way through winget (winget install OnyxCode), which will be the recommended way to install once it is published: it runs through Microsoft's App Installer (a trusted Microsoft Store app) with a package listing reviewed in Microsoft's community winget repository, so it verifies the download and gives a smoother first-run experience. winget is not available yet, so for now the only way to install on Windows is to download the attached OnyxCode-win32-x64-winget.exe and run it manually. It is not code-signed yet, so Windows SmartScreen warns "Windows protected your PC"; click More info, then Run anyway to continue. A code-signed installer is planned for a later release.

The *-autoupdate.zip, darwin-*.json, linux-x64.json and win32-x64.json files are plumbing for Onyx Code's
built-in auto-updater. They are not designed for manual install and will give
you a worse first-run experience than the download above.

What's New

Your local AI is now an agent, and it's free. The built-in on-device model reads the files it needs across your project on its own while it answers, then creates and changes files through edits you review and apply. You get the feel of a paid cloud assistant with none of the cost, and your code never leaves your machine.

Whole-codebase understanding, now free. Ask questions and make changes across your entire project, not just the files you have open, with no Pro subscription required.

Focused edits you approve before they land. Changes come back as targeted diffs scoped to the part of the file that actually changes, staged for your review. Nothing is written to disk until you apply it, and the assistant only reports a change as applied once it genuinely reached the file.

More extensions just work. Onyx Code now matches extensions against its own editor engine version, so a wider range of VS Code extensions, including popular AI coding tools, install and run correctly.

Drag a folder into chat. Drop a folder from the Explorer onto the chat input and it drops in a reference to that folder. The assistant then pulls in whatever it needs from inside as it works.

Bring your own embedding model at no cost. Custom embedding models for local code search are now free.

System Requirements

• macOS 11 (Big Sur) or later.
• Apple Silicon (M1 or newer) or an Intel Mac. The Universal download runs natively on both.

Installing

1. Download the .dmg that matches your Mac (see "Downloading" above).
2. Open it and drag Onyx Code into your Applications folder.
3. Launch it from Applications. Because the build is notarized, it opens without a security prompt.

Verification

This build is signed and notarized by Apple. macOS verifies it on first launch, so it opens as an app from an identified developer without security warnings.