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TL;DR
T3 Code is an open-source app that brings multiple AI coding agents, including Claude Code and Codex, into one workspace. It uses users’ existing provider logins and subscriptions, and offers separate Git worktrees for tasks. Its publisher says the software is free, but provider limits still apply and the project is at an early version.
T3 Code, an open-source app from T3 Tools Inc., brings coding agents such as Claude Code, Codex and Cursor into one interface, where developers can manage tasks and review Git changes. The software does not provide its own AI model or resell tokens: users connect provider accounts and remain subject to the plans and limits they already have.
The project describes itself as a shared control surface for coding agents rather than a replacement for them. According to its website and documentation, agents run through their existing harnesses on a machine chosen by the user, such as a laptop, desktop or server. T3 Code offers desktop versions for macOS, Windows and Linux, as well as a web interface, a command-line server and mobile apps for iOS and Android that can connect to the machine running the work.
The project’s homepage names Claude Code, Codex, Antigravity, OpenCode, Cursor and Grok. Its GitHub installation guide listed 10 providers on November 8, 2026, including Kiro, Pi, Muse Code and fx. Users authenticate through each provider’s own login process. T3 Code says it does not sell tokens; the underlying AI providers continue to bill users under their existing arrangements.
For coding work, users can create a thread with a separate Git worktree, giving the task its own working folder and branch. The app presents the resulting changes for review and offers actions to commit, push and open a pull request. Its documentation also describes switching providers within a thread, though it says the transfer does not carry over the original agent’s internal reasoning, tool state or attachments in full.
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 Parallel Coding Tasks
For developers who already use several coding agents, the practical pitch is less switching between apps and a shared place to inspect what each tool changed. Separate worktrees can help keep parallel tasks from editing the same working directory, while a common diff view and Git actions may make it easier to review and move work toward a pull request.
The distinction between an interface and an AI service matters for cost and expectations. T3 Code says it is free and does not add its own token quotas, but that does not mean the agents are unlimited or free. Provider subscription limits and terms still apply, and the app’s usage page presents API-equivalent cost estimates rather than a user’s actual subscription bill. Developers would need to check their providers’ rules and plan limits before relying on a particular workflow.
The approach may be most useful to people who regularly use multiple agents, run work in parallel or want to monitor tasks remotely. A developer who uses one agent in one terminal may gain little from adding another layer. The product’s value will depend on how reliably it handles each provider’s workflow and how well the shared review and Git features fit existing development practices.
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How T3 Code Fits Existing Tools
AI coding products often combine a model with a harness: the software that lets an agent inspect files, run commands and perform other work. T3 Code’s FAQ says the app is neither a model nor a harness. Instead, it connects to harnesses already installed and gives them a common interface. The company’s homepage calls it an “open-source control plane for coding agents.”
The project is distributed under the MIT licence and describes itself as free to use. The source material reported 51,990 GitHub stars as of November 8, 2026, while the homepage rounded that figure to “51k+.” The site also claimed more than 500,000 developers use the product; that user figure was not independently verified in the source material.
The project was still young: the source material identifies version 0.1.7, released November 4, 2026. It also warns that new threads begin in full-access mode unless users change the default. That detail is relevant because agents may be able to interact with files and run commands; users should inspect the app’s permissions and settings before starting work.
““The open-source control plane for coding agents.””
— T3 Code homepage
Early Release Leaves Practical Questions
The available material does not independently verify the website’s claim that more than 500,000 developers use T3 Code, nor does it establish how the app performs across all supported agents, operating systems and remote setups. The provider list reflects what the installation guide showed on November 8, 2026; support may change as the project develops.
It is also unclear how consistently context transfers when users switch agents in longer conversations. T3 Code’s documentation says some conversation history and relevant activity can be handed over, while internal reasoning, tool state and attachments remain behind. Users should not assume the new agent will inherit every detail or reproduce the previous agent’s state.
The source material does not give independent security testing results or detail how every provider’s terms apply to each remote configuration. Users should review provider policies, local permissions and the app’s access settings, especially because new threads reportedly start in full-access mode unless that default is changed.
Check Provider Support and Defaults
Developers considering the app can compare the current installation guide with the agents they already use, then test a small task before moving important work into the workspace. They can check that each provider login works, inspect how a thread’s branch and worktree are created, and review the diff before using the commit, push or pull-request actions.
For early adopters, the next practical milestones are updates to the young project, changes to its provider integrations and clearer evidence about how well it handles context switching and remote access. Until then, users should treat provider support, usage estimates and the company’s adoption figure as claims or product information from the project, not independently established measures of performance.
Key Questions
What is T3 Code?
T3 Code is an open-source interface for managing coding agents that users already have installed. It does not supply its own AI model or harness, according to its FAQ.
Does T3 Code include Claude Code or Codex usage?
No. The app connects to providers’ existing sign-ins, and users continue to use their own subscriptions or other provider arrangements. Their provider billing and plan limits still apply.
Which coding agents does it support?
The project’s homepage names Claude Code, Codex, Antigravity, OpenCode, Cursor and Grok. Its installation guide listed 10 providers on November 8, 2026, including Kiro, Pi, Muse Code and fx.
Can a coding task run on a separate Git branch?
T3 Code says users can start work in a separate Git worktree, giving a thread its own folder and branch. The app then offers review and Git actions, including committing, pushing and opening a pull request.
Is T3 Code mature, and what should users check?
The source material identifies version 0.1.7 as released on November 4, 2026. Users should check current provider support, their providers’ terms and the app’s permissions; the material says new threads start in full-access mode unless the default is changed.
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