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TL;DR
T3 Code is an open-source app that brings coding agents such as Claude Code and Codex into one workspace, while users continue to authenticate through their existing provider accounts. It supports separate Git worktrees for tasks and review and pull-request actions in the same interface. The project is young, and its provider limits and permissions still apply.
T3 Code, an open-source app from T3 Tools Inc., brings AI coding agents including Claude Code and Codex into one workspace, letting developers manage tasks, review code changes and use Git actions without switching between each tool’s separate interface. The app does not provide or resell the underlying AI models: users connect their existing agent accounts, and provider billing and limits remain in place.
T3 Code describes itself as a shared interface for coding-agent harnesses—the software that lets an agent interact with a codebase and run tools. Its FAQ says the app is neither a model nor a harness; instead, it uses agents installed or authenticated on a chosen machine and presents their work in a common interface. The project is available under the MIT license and says the app is free to use.
The homepage names Claude Code, Codex, Cursor, Grok Build, OpenCode and Google’s Antigravity. The GitHub installation guide listed 10 providers as of November 8, adding Kiro, Pi, Muse Code and fx. Users sign in to each provider through its own supported method. T3 Code says it does not resell tokens, so subscriptions and usage limits continue to be governed by the providers.
Work can be organized into threads, with an option to give a task its own Git branch and working folder. That arrangement is intended to keep parallel tasks separate. Users can inspect a diff and, from the same interface, commit changes, push them and open a pull request. The product also supports switching agents during a thread, although the documentation says not all prior conversation state carries over.
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, Separate Agent Tasks
For developers who use more than one coding agent, T3 Code addresses a practical coordination problem: each tool can have a separate login, interaction history and way of presenting code changes. A shared thread view and common diff and Git controls may make it easier to keep track of which agent worked on a task and compare outputs without repeatedly moving between applications.
The per-thread branch and worktree option is relevant to teams or individuals running tasks concurrently, since it gives each task a distinct working area. The same setup could let a developer ask one agent to make a change and another to inspect it. That is a workflow the product enables, not evidence that one agent’s review is reliable or that the resulting code is safe to merge; developers still need to review and test changes.
The approach also leaves a key trade-off unchanged: users may reduce interface switching, but they still depend on each provider’s availability, subscription terms and usage limits. T3 Code is a layer for coordinating tools, not a replacement for those services.
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A Layer Above Existing Coding Tools
Many AI coding products combine a model with a harness that gives it access to files and commands. T3 Code’s stated distinction is that it brings existing harnesses together rather than supplying a new model. The agents run on a machine selected by the user; the project describes desktop, web, command-line server and mobile access as ways to interact with that work remotely.
The source material lists version 0.1.7 as released November 4, 2026. It reported 51,990 GitHub stars on November 8, while the site’s homepage rounded that figure to more than 51,000. T3 Code also says more than 500,000 developers use the app; that audience figure was not independently verified by the source author.
For usage visibility, the product has a page that combines activity across agents. Its documentation cautions that displayed cost figures are API-equivalent estimates, not a calculation of what a user pays under a subscription. That distinction matters because an estimate based on API pricing may not match a plan’s actual charges or allowances.
“the open-source control plane for coding agents”
— T3 Code’s homepage
Limits, Permissions and Early-Stage Status
T3 Code is at version 0.1.7, and the source material does not establish how reliable or consistent the experience is across all listed providers and operating systems. It also does not provide independent testing of the site’s user-count claim or evidence that using the shared interface improves code quality or development speed.
Provider-specific terms, subscription limits and authentication requirements remain in effect. The source warns that new threads start in full-access mode unless users change the default, but does not give a detailed account of how permissions differ across agents or how each provider handles data. Developers should review the app’s current settings, documentation and their providers’ terms before connecting accounts or allowing agents to run tasks.
Switching agents also does not necessarily transfer everything. According to the documentation, a handoff may include selected conversation messages and relevant activity, but leaves behind the earlier agent’s internal reasoning, tool state and attachments. The precise result can depend on the length and contents of the conversation.
Watch Provider Support and Releases
The next practical test is whether T3 Code maintains support as providers change their authentication methods and agent interfaces. Developers evaluating it can check the current installation guide, connect only the accounts they intend to use, and try a small task before relying on it for parallel work or pull requests.
Users should also confirm the permissions assigned to new threads, inspect diffs before committing, and treat the combined usage page as an estimate where the documentation says it is API-equivalent. The source material does not identify a future release date or specific roadmap milestone. Provider coverage, permission controls and the project’s development pace remain the main items to follow.
Key Questions
Does T3 Code include Claude Code or Codex subscriptions?
No. T3 Code is an interface for existing agents; users authenticate with their provider accounts, and the providers’ subscription charges and limits continue to apply.
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.
Can separate tasks work on different branches?
Yes. T3 Code offers a new-worktree option that gives a thread its own Git branch and working folder. Its interface also supports reviewing a diff, committing, pushing and opening a pull request.
Does switching agents preserve the full conversation?
Not always. T3 Code’s documentation says a handoff can carry over selected conversation content and relevant activity, but the original agent’s internal reasoning, tool state and attachments stay behind.
Is T3 Code’s usage page the same as a subscription bill?
No. The documentation describes cost figures as API-equivalent estimates, not users’ actual subscription bills. Provider-specific plans and limits determine what users pay and can access.
Source: ThorstenMeyerAI.com
