engineering / agent
T3 Code
A control surface with mobile, web and desktop apps for the agents already set up on your computer, such as Claude Code and Codex.
At a glance
- Purpose
- A control surface with mobile, web and desktop apps for the agents already set up on your computer, such as Claude Code and Codex.
- Runs in
- Local agent with shell, MCP server, Web service
- Operating systems
- macOS, Linux, Windows
- Needs
- Runtime: Not stated; Needs internet: Not stated; Needs accounts or API keys beyond your agent: Not stated
- Files and data
- Reads files: Not stated; Writes files: Not stated; Sends data to other services: Not stated
- Tool type
- Agent
- Delivery
- From GitHub
- Version
- Latest on the main branch
- Access
- Code on GitHub
- Compatibility
- According to the README, T3 Code works with Claude Code, Codex, Cursor, Grok Build, OpenCode and Google Antigravity. The README lists iOS, Android, web and Electron-based desktop apps. The README lists install routes for Windows with winget or scoop, macOS with Homebrew, Debian and Ubuntu with a .deb package, and Arch Linux through the AUR, plus a command-line install script with a PowerShell version for Windows.
- External costs
- The README says T3 Code works with your subscriptions on Claude Code, Codex, Cursor, Grok Build, OpenCode and Google Antigravity. It names no prices. It says the authors are selling nothing. The repository is MIT-licensed and states no pricing. The agent provider you connect may charge for usage.
- Permissions
- The README shows downloaded installer scripts executed through sh or PowerShell and desktop installation through platform package managers. The README says supported providers must be installed and authenticated; Antigravity installation and Google sign-in occur through Settings. The README says t3 starts a server and local web app, t3 service install keeps it running in the background, and t3 update downloads a newer release. The README's contributor route installs the global vp tool through a downloaded script and then installs dependencies with vp i. The README says T3 Code controls agents already set up on the user's computer and links documentation for permission modes and remote access. The top-level entries include scripts/; the README does not describe that folder's contents.
- Usage terms
- MIT License, as stated in the repository. See its LICENSE file for the exact terms.
- Interface
- desktop
What it does
The README describes T3 Code as an agent harness control surface. The README says its iOS, Android, web and Electron desktop apps control agents installed on the user's computer.The README lists Claude Code, Codex, Cursor, Grok Build, OpenCode and Google Antigravity. The README requires installing and authenticating at least one provider before use, with Antigravity installed and signed in through Settings rather than a CLI.
The README says the project is very early and tells readers to expect bugs. The README links documentation for permission modes, remote access, outside agents over MCP, source control and background services.
Who it is for
Developers who already use agents such as Claude Code or Codex and want to control them from a desktop, web or mobile app.Example tasks
Run t3 to start the server and open the local web app.Run t3 service install to keep the server running in the background.
Run t3 update to move to a newer release.
Run npx t3@latest to try T3 Code once without installing it.
Follow the remote access guide to reach your agents from a phone or another machine.