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, and OpenCode. 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.
Important
This repository is radroid/t3code, a fork. It builds an app called Coil, and the package-registry commands further down do not install it.
winget install T3Tools.T3Code, brew install --cask t3-code and yay -S t3code-bin all install upstream's T3 Code — a different app, from a different repository, that updates from a different place. They are correct if upstream is what you want; they are the wrong thing if you got here looking for this fork's build.
Fork builds live at coil.curlycloud.dev/download. That page carries the per-platform first-launch steps inline, and you will need them: these builds are not code-signed, so macOS calls the app damaged on first launch rather than merely unsigned, and right-click → Open does not get past that. The same steps are in the body of every GitHub release — both are rendered from scripts/coil/install-instructions.json, so they cannot drift.
| Platform | Built | Notes |
|---|---|---|
| macOS | Apple Silicon (arm64) | No Intel build |
| Windows | x64 | No arm64 build |
| Linux | Not built | Build from source |
Everything else in this README is upstream's and applies unchanged — the fork's own docs are under docs/coil/.
Warning
T3 Code currently supports Codex, Claude, Cursor, Grok Build and OpenCode. Install and authenticate at least one provider before use:
- Codex: install Codex CLI and run
codex login - Claude: install Claude Code and run
claude auth login - Cursor: install Cursor CLI and run
agent login - Grok Build: install Grok Build CLI and run
grok login - OpenCode: install OpenCode and run
opencode auth login
The easiest way to test T3 Code is to run the server in your terminal (requires Node.js 22.16+, 23.11+, or 24.10+):
npx t3@latestThis will launch T3 Code's backend on your machine as well as the local web app to control your agents.
Tip: Use npx t3@latest --help for the full CLI reference.
Install the latest version of the desktop app from GitHub Releases, or from your favorite package registry:
winget install T3Tools.T3Codebrew install --cask t3-codeyay -S t3code-binWe 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.
- Install and first run
- Permission modes
- Keyboard shortcuts
- Customize a project icon
- Remote access from a phone or another machine
- Keeping app and server in sync
- Source control integrations
- Multiple accounts: Codex · Claude
- Linux: 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 | bashirm https://vite.plus/ps1 | iexCheckout their getting started guide for more information: https://viteplus.dev/guide/
vp iRead CONTRIBUTING.md before opening an issue or PR.
Need support? Join the Discord.