What can the assistant do on my machine?

Starting a thread or sending to one runs a coding agent on that machine, with whatever rights T3 Code gives it there. That is why both wait for your approval by default, and the approval shows the full request, including the machine and the mode the agent runs in. Keep them on approval unless the machine is one you can lose.

Does one connection reach all my machines?

Yes. Every tool can name one of the machines linked to your T3 server, reads included, so the connection reaches all of them. To keep a machine out, do not link it to that T3 server, or have reads wait for approval too.

Everything except the seven tools: deleting projects, secrets, environments, previews, worktrees and settings are never offered, and neither is waiting on a thread; the assistant reads the thread again instead.

Which AI assistants can use T3 Code through Flowplane?

Claude, Claude Code, ChatGPT, Cursor, Codex, GitHub Copilot and Mistral Le Chat, and any other client that supports remote MCP servers with sign-in. They all reach T3 Code through the same Flowplane address.

Free for one person, with up to three apps and five assistants. Personal Pro is €9 a month including VAT; companies start at €99 a month for ten active users. Prices are indicative; see the pricing page.

Building software

T3 Code MCP server

T3 Code is an open-source control surface for the coding agents on your own machines, such as Codex and Claude Code, served by `t3 serve`. Through Flowplane an AI assistant can list your projects, the machines linked to your T3 server and your threads, and read one thread. It can start a thread, send a message to one and interrupt one, which waits for your approval by default, because each of those runs or stops a coding agent on your machine.

Connect T3 Code →Set up your assistant

Tools: The app’s own set
Sign-in: Own account or shared key
Approval, by default: Changes wait for you
MCP server: The app’s, passed through

What it can do

What your assistant can do in T3 Code

Flowplane passes T3 Code’s own MCP server through, so the tools are the ones T3 Code offers when you connect. By default reads are allowed and anything that changes something waits for the person’s approval; your workspace’s rules decide.

Reads allowed

Looking things up runs straight away, within what the account you connected may see.

Changes asks first

Creating, changing or deleting waits for your approval in the browser, unless your workspace’s rules say otherwise.

How it connects

Sign-in

How you log in depends on where your T3 Code answers. At a public https address you sign in on T3 Code’s own page and approve read and operate access only; T3 gives no renewal, so you sign in again when it ends. A T3 on your machine or network is reached through a tunnel with an access token you issue on the T3 host (`t3 auth session issue`, read and operate scopes only, 30 days by default) and paste. Flowplane keeps it sealed; the assistant never sees it.

In Flowplane: In the Flowplane console, add T3 Code and type the address where `t3 serve` answers. At a public address, press Sign in with T3 Code; for a T3 on your machine or network, choose a tunnel and paste the access token.

MCP

T3 Code and MCP

T3 Code has its own MCP server: every T3 server answers MCP at `<address>/mcp`. Flowplane passes that server through, but offers only seven of its tools: finding projects, linked machines and threads, reading a thread, and starting, sending to and interrupting one. Nothing else T3 lists is stored or forwarded.

Try it

Things to ask

“Which of my threads in the website project are still running?”
“Read the last messages of the thread about the login bug and tell me where it got stuck.”
“Start a thread in the api project: fix the failing date test, and touch nothing else.”
“Tell the billing thread to also add a test for refunds.”
“Interrupt the thread that is refactoring the search module.”

Your assistant

Connect your assistant to T3 Code

One Flowplane address works in every assistant below, with the same rules and the same log. Step-by-step setup for each:

FAQ

Questions

What can the assistant do on my machine?: Starting a thread or sending to one runs a coding agent on that machine, with whatever rights T3 Code gives it there. That is why both wait for your approval by default, and the approval shows the full request, including the machine and the mode the agent runs in. Keep them on approval unless the machine is one you can lose.
Does one connection reach all my machines?: Yes. Every tool can name one of the machines linked to your T3 server, reads included, so the connection reaches all of them. To keep a machine out, do not link it to that T3 server, or have reads wait for approval too.
What is left out?: Everything except the seven tools: deleting projects, secrets, environments, previews, worktrees and settings are never offered, and neither is waiting on a thread; the assistant reads the thread again instead.
Which AI assistants can use T3 Code through Flowplane?: Claude, Claude Code, ChatGPT, Cursor, Codex, GitHub Copilot and Mistral Le Chat, and any other client that supports remote MCP servers with sign-in. They all reach T3 Code through the same Flowplane address.
What does it cost?: Free for one person, with up to three apps and five assistants. Personal Pro is €9 a month including VAT; companies start at €99 a month for ten active users. Prices are indicative; see the pricing page.

Flowplane is not affiliated with or endorsed by T3 Code’s maker; the name and logo only identify the app. Pricing

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