Rank #08 · Daily · DevTools
T3 Code: Open-Source GUI Harness for Coding Agents
One open GUI to control the coding agents already on your machine — from a laptop, the web, or your phone.
What it does
T3 Code calls itself an "agent harness control surface." It does not replace Claude Code, Codex, or Cursor; it drives the agents you already authenticated on the host:
- Desktop (Electron), web app (app.t3.codes), and mobile apps (iOS / Android) talk to a local
t3server. - Supported providers listed in the README: Codex, Claude Code, Cursor CLI, Grok Build, OpenCode, Google Antigravity, and fx — install and log into at least one before use.
- Install via
curl … | sh/ PowerShell,npx t3@latest, or packaged desktop apps (winget, scoop, Homebrew cask,.deb, AUR, nixpkgs).t3 service installkeeps the server in the background;t3 updateupgrades. - Docs cover permission modes, keybindings, project settings, remote access from another machine or phone, MCP connections to outside agents, source-control integrations, and multi-account setups for Codex / Claude.
- Homepage: t3.codes. The project states it is early, expects bugs, and is mostly not accepting large feature contributions yet.
Who it's for
Developers who already pay for Claude Code / Codex / Cursor / similar subscriptions and want a performant, remote-ready shell around them — especially people who want to steer agents from a phone or another machine. Less useful if you don't already have a provider CLI authenticated.
Stars / language / license
44,429 stars · TypeScript · MIT
Data verified: 2026-11-04 09:13 Asia/Shanghai (GitHub API get_repository + README get_file_contents)
Trending note: +12,542/wk (weekly Trending filler; selection captured 09:12 Asia/Shanghai) — fastest weekly growth among today's #08–#10 fillers.
Category tags
DevTools · agent-IDE · coding-agents · Electron · Claude-Code · Codex · remote
How it differs from similar projects
Compared with Cursor / Claude Desktop / Codex desktop / Conductor. Those are vendor-shaped products tied to one ecosystem. T3 Code's pitch is a multi-provider open harness that reuses your existing CLI logins, with forkability if the project drifts.
Compared with JetBrains thinkrail (#09 on today's list). thinkrail is a lightweight IDE built around the pi agent with worktrees and living specs. T3 Code is a control surface for many third-party agent CLIs, including mobile remote.
Compared with running agent CLIs in a bare terminal. Same engines underneath; T3 adds a shared UI, remote access, and multi-provider session management.
No independent productivity or latency benchmarks are claimed here. The README itself frames the project as early.