T3 Code is an "agent harness control surface". It enables control of the agents on your machine with a best-in-class mobile app (iOS, Android), web app and Electron-based desktop app.

Works with your subscriptions on Claude Code, Codex, Cursor, Grok Build, OpenCode, Google Antigravity, and fx. If they're set up on your computer, T3 Code can control them.

Nothing. We built T3 Code because we wanted the best possible development experience with agents. We were inspired by existing solutions like the Codex desktop app, Conductor, Claude Desktop and Cursor Glass, but none met our bar.

We wanted something performant, remote-ready, and truly open. If we ever go the wrong direction, we want you to have everything you need to fork and build the editor that you want.

curl -fsSL https://t3.codes/install.sh | sh

On Windows, in PowerShell:

irm https://t3.codes/install.ps1 | iex

Then run t3 to start the server and open the local web app. t3 service install keeps it running in the background, t3 update moves to a newer release, and t3 --help has the full reference.

To try it once without installing, run npx t3@latest instead.

Install the latest version of the desktop app from GitHub Releases, or from your favorite package registry:

winget install T3Tools.T3Code

scoop install extras/t3code

brew install --cask t3-code

Download the .deb from GitHub Releases, then:

sudo apt install ./T3-Code-*.deb

Stable:

yay -S t3code-bin

Nightly:

yay -S t3code-nightly-bin

The AUR packaging is maintained in this repository under packaging/aur.

nix profile add github:NixOS/nixpkgs/nixos-unstable#t3code

The package is maintained in nixpkgs and includes the desktop app (t3code-desktop) and the t3 command. See Nix installation for NixOS configuration and updates.

We are very very early in this project. Expect bugs.

We are (mostly) not accepting contributions yet. Small fixes may be considered. Big features will not be.

Full docs live in docs/. There's no docs site yet.

• FAQ
• Install and first run
• Permission modes
• Keyboard shortcuts
• Project settings
• Appearance preferences
• Remote access from a phone or another machine
• Connect Claude Code, Codex, ChatGPT and other agents over MCP
• Keeping app and server in sync
• Source control integrations
• Multiple accounts: Codex · Claude
• Run T3 Code as a background service

Building from source? Start at docs/internals/overview.md.

T3 Code uses Vite+ so you'll need to install the global vp command-line tool.

curl -fsSL https://vite.plus | bash

irm https://vite.plus/ps1 | iex

Checkout their getting started guide for more information: https://viteplus.dev/guide/

vp i

Read CONTRIBUTING.md before reporting a bug or opening a PR.

Have a feature request? Start an Ideas discussion.

Need support? Join the Discord.