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, and Google Antigravity. 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.
This is a fork of pingdotgg/t3code with a batch of extra features on top — selectable color themes, header usage/spend meters, cross-chat AI restart alerts, a flat "chats by activity" sidebar, per-device feature toggles, and an Android build. See What this fork adds.
Warning
T3 Code currently supports Codex, Claude, Cursor, Grok Build, OpenCode, and Antigravity. 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 - Antigravity: enable it in Settings, then use Install Antigravity and Sign in with Google. No CLI is required.
curl -fsSL https://t3.codes/install.sh | shOn Windows, in PowerShell:
irm https://t3.codes/install.ps1 | iexThen 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.T3Codebrew install --cask t3-codeDownload the .deb from GitHub Releases, then:
sudo apt install ./T3-Code-*.debStable:
yay -S t3code-binNightly:
yay -S t3code-nightly-binThe AUR packaging is maintained in this repository under packaging/aur.
Everything below is additive on top of upstream T3 Code. Screenshots are from a live instance.
A color scheme axis that is independent of the light/dark toggle. Pick from Solarized, Dracula, Gruvbox, Catppuccin, and Tokyo Night — each ships a full light and dark variant — or stay on Default. The scheme re-tints the whole app (sidebar, chat, header) and is applied before first paint, so there's no flash, and it syncs across browser tabs.
Set it in Settings → General, right below the light/dark Theme control:
 Solarized · Light |
 Solarized · Dark |
 Dracula |
 Gruvbox |
 Catppuccin |
Tokyo Night |
Keep an eye on how much you're burning without leaving the chat. Small chips in the top bar always show the thread's token usage and your Claude plan usage; a bar-chart menu lets you switch on larger, color-coded readouts per device: Context window, Spend estimate, Claude Session %, Claude Weekly %, and Codex subscription %. Hovering a usage tile shows a countdown to when that limit window resets.
The Codex meter reads your Codex CLI subscription's rate-limit usage passively from local rollout files — no extra API calls — so it even reflects out-of-band codex exec runs. Toggle any stat from the header menu:
When an agent asks you to restart the service it's working on, T3 Code surfaces it so your other chats on the same project don't stomp on the restart. The requesting chat gets a banner with a Mark resolved action, its sidebar row shows a Restart Requested pill, and sibling chats get a "hold" banner. It auto-clears when you reply in the requesting chat.
Flip the sidebar from the grouped project tree into a single flat list of every chat, ordered by last activity, with each row tagged by its project. The choice persists per device.
A Settings → Features page with auto/show/hide toggles for the chat header's action controls — Git actions, Open in editor, and Project scripts. "Auto" shows them on desktop and hides them on mobile-width screens. Stored per device.
- Resumable Claude Code conversation import —
t3 import claude <session>turns an existing Claude Code transcript into a resumable T3 thread, forking to a new transcript so your original session is untouched. - Missing-transcript diagnostics — when a Claude thread can no longer be resumed because its
~/.claude/projects/…/<session>.jsonlis gone (host reprovisioned, thread imported from another machine), the thread shows exactly which file is missing instead of a generic stream failure.t3 session auditlists every affected thread with the path to restore;t3 session reset <threadId> --yesis the explicit opt-in to start that thread over with a fresh Claude session. - Android app — a full native Android build (Ghostty terminal, Shiki-highlighted code blocks, themed native chrome, self-signed-TLS trust, sideload APK publish script).
- File explorer collapsed by default, and a fix so the left edge of message lines is selectable.
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.
- Install and first run
- Permission modes
- Keyboard shortcuts
- Project settings
- Appearance preferences
- Remote access from a phone or another machine
- 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 | bashirm https://vite.plus/ps1 | iexCheckout their getting started guide for more information: https://viteplus.dev/guide/
vp iRead CONTRIBUTING.md before reporting a bug or opening a PR.
Have a feature request? Start an Ideas discussion.
Need support? Join the Discord.