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TL;DR
T3 Code is an open-source app that brings supported coding agents, including Claude Code and Codex, into a shared interface while using users’ existing provider accounts. Its features include separate Git worktrees for tasks and remote access, but it does not remove provider limits, and some product details remain unclear in the available source.
T3 Code is an open-source app that lets developers use supported AI coding agents, including Claude Code and Codex, from one interface while signing in through the providers they already use. The project says it does not resell model tokens; instead, it provides shared tools for managing agent tasks, reviewing code changes and using Git.
The project describes itself as a control plane for coding agents, rather than a new model or agent harness. According to T3 Code’s FAQ, it connects to harnesses developers have installed and puts a common interface on top. The source lists support for Claude Code, Codex, Cursor, Grok Build, OpenCode and Google’s Antigravity on the homepage; its installation guide listed 10 providers as of November 8, 2026, including Kiro, Pi, Muse Code and fx.
T3 Code is described as free and open source under the MIT licence, with desktop versions for macOS, Windows and Linux, as well as web, command-line server and mobile options. The source says agent work runs on a machine chosen by the user, while other devices can connect remotely. It also reports 51,990 GitHub stars on November 8, 2026. T3 Code’s website claims more than 500,000 developers use the project, a figure the source says it could not independently verify.
For each task, users can start a thread with a separate Git branch and working folder, which is intended to keep parallel agent work apart. The interface brings changes into a shared diff view and offers Git actions to commit, push and open a pull request. The source also says users can switch providers in a thread, although the handoff may not preserve every part of the original agent’s state.
Infographic 01 · One surface, your own plans
Your subscriptions, one workspace
T3 Code puts the coding agents you already pay for into one interface. It orchestrates them; your provider bills you as before.
It does not resell tokens. You keep paying your AI providers as you do today, and your plan limits stay as they are.
Sign in with the tools you already have
On the machine that runs the agents
| Agent | How you sign in |
|---|---|
| Claude Code | claude auth login |
| Codex | codex login or Connect with ChatGPT |
| Cursor | agent login (Cursor CLI) |
| Grok Build | grok login |
| OpenCode | opencode auth login |
| Antigravity | Sign in with Google in the provider settings |
Sources: T3 Code homepage; GitHub install guide and FAQ (read 8 Nov 2026).
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One Workspace for Multiple Agents
For developers who already use several coding agents, T3 Code’s pitch is coordination rather than another model subscription. A shared task view could reduce the need to move between separate apps and make it easier to compare outputs or ask one agent to continue work begun by another. Separate worktrees also address a practical problem: parallel coding tasks can otherwise interfere when they edit the same working directory.
The subscription approach may appeal to users who want to keep their existing provider relationships. But T3 Code does not, on the information supplied, make those plans unlimited or combine their billing. Provider terms, authentication requirements and usage limits still apply. Its usage page reportedly aggregates token activity and estimates API-equivalent costs; those estimates are not the actual charges for subscription plans.
The product may be less useful to a developer who is satisfied with one agent in one terminal. Its value depends on whether the shared interface, remote access and task separation solve enough day-to-day friction to justify installing and learning another tool. The source presents those as product benefits, not independently measured productivity gains.
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AI coding products often combine a model with a harness: software that lets the model inspect files, run commands and interact with a project. T3 Code says it supplies neither. Its stated role is to connect to existing harnesses and provide one place to manage them. That distinction matters because the product’s promise is not that it replaces Claude Code, Codex or another provider, but that developers can work with several through a common surface.
The source describes a range of access points: a desktop application, a browser-based app, a command-line server and mobile apps for iOS and Android. It says the agents execute on a machine selected by the user, with other devices acting as remote controls. That setup may support work across devices, but the source does not provide independent testing of reliability, security or performance.
On agent handoffs, the source says short conversations can move intact, while longer ones may be reduced to the original request, recent turns and relevant activity such as command results. The receiving agent can use a thread-reading tool to retrieve earlier messages. Internal reasoning, tool state and attachments from the previous agent do not carry over, according to the supplied product description.
“The open-source control plane for coding agents.”
— T3 Code homepage
Limits of the Subscription Promise
The available source does not independently verify T3 Code’s claim that more than 500,000 developers use the app, and it does not provide a method for counting that figure. The reported GitHub star count is a snapshot from November 8, 2026, rather than evidence of active use.
Several practical details also remain unsettled in the source material. It does not spell out the security model for remote access, how credentials are stored across supported setups, or whether every provider and feature works identically across desktop, web and mobile. Those questions matter because T3 Code connects to accounts and project files on a machine chosen by the user.
The project was listed at version 0.1.7 on November 4, 2026, indicating an early release. The source warns that new threads start in full-access mode unless users change the default. It does not detail the consequences of that setting or provide a comparison of safety controls among providers. Developers should check the current documentation and provider terms before using the app on sensitive repositories.
Check Compatibility Before Installing
The next step for interested developers is to confirm that their preferred agents are supported and that their existing accounts can authenticate through the documented setup. The source lists separate sign-in methods for providers, including command-line login flows for several tools and Google sign-in for Antigravity. These instructions may change as the project and provider integrations are updated.
Users considering parallel tasks should also review T3 Code’s worktree and permission settings before launching agents against a repository. The source says tasks can receive separate branches and folders, but it does not establish that this removes all risk of conflicting edits or unintended changes. Testing the workflow on a non-sensitive project would let users assess how diffs, commits and pull requests are handled in their own setup.
No later release date or product milestone is specified in the source. For now, the confirmed development is the availability of a shared interface and the project’s stated support for multiple existing agents. Changes to provider support, access controls and release status should be checked against T3 Code’s current documentation.
Key Questions
Does T3 Code include Claude Code or Codex subscriptions?
No. The source says users sign in through the providers they already use. T3 Code does not resell tokens, and the AI providers continue to apply their own billing and plan limits.
Which coding agents does it support?
The homepage names Claude Code, Codex, Cursor, Grok Build, OpenCode and Google’s Antigravity. The installation guide listed 10 providers on November 8, 2026, also including Kiro, Pi, Muse Code and fx. Support can change, so users should check the current guide.
Can users switch agents in the middle of a task?
The product documentation says users can hand a thread to another provider. Short conversations may transfer intact, while longer ones can be condensed. The prior agent’s internal reasoning, tool state and attachments are not carried over, according to the source.
How does T3 Code keep parallel tasks separate?
Users can start a thread with a separate Git branch and working folder, called a worktree in the source. The interface also offers actions to review changes, commit, push and open a pull request. The source does not claim that this prevents every possible conflict.
Is T3 Code free, and is it an early project?
The source describes it as free and MIT-licensed. It lists version 0.1.7 on November 4, 2026, so it is an early release; users should check current documentation for features, defaults and security guidance.
Source: ThorstenMeyerAI.com
