pingdotgg/t3code

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Summary

T3 Code is an “agent harness control surface” for operating coding agents already installed and authenticated on a developer’s machine. It provides mobile, web, and Electron desktop interfaces for working with Codex, Claude Code, Cursor, Grok Build, OpenCode, Google Antigravity, and fx.

What it is useful for

T3 Code is useful when an engineer wants to use existing coding-agent subscriptions from different devices or keep an agent session accessible away from the main workstation. For example, a developer could start a Codex or Claude Code session through T3 Code and interact with it through the local web app, the desktop application, or a phone. The README also documents remote access, permission modes, project settings, keyboard shortcuts, source-control integrations, and connecting other agents over MCP.

The project acts as a control layer rather than replacing the underlying providers. An agent must already be installed, configured, and authenticated on the computer running the T3 Code server. It also supports multiple Codex and Claude accounts, and can run as a background service.

How engineers can use it

First, install and authenticate at least one supported provider. The documented commands include:

codex login
claude auth login
agent login
grok login
opencode auth login
fx login

Antigravity does not require a CLI; it is enabled in Settings and signed in with Google.

Install T3 Code with:

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

On Windows PowerShell, the README provides:

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

Then run t3 to start the server and open the local web app. The README also documents npx t3@latest for trying it without installation, t3 service install for background operation, t3 update, and t3 --help. Desktop packages are available through GitHub Releases and package managers including winget, Scoop, Homebrew, Debian/Ubuntu packages, AUR, and Nix.

Engineers interested in building from source should follow docs/internals/overview.md, install the global vp tool, and run vp i.

T3 Code is explicitly described as very early, with expected bugs. Contributions are mostly not being accepted, although small fixes may be considered. Full documentation is stored in the repository’s docs/ directory; there is no documentation website yet.