Personal AI agent
An AI agent that runs your errands on your own computer
Say or type what you need: find, compare, order, track a delivery, arrange a return. T4Agent plans the steps, works in a browser on your device with your own accounts, and asks for your approval before anything that costs money.
T4Agent is in development. Windows early access is being prepared; there is no public download yet.
Architecture
What runs where
Your device carries out the steps and keeps your secrets, the T4Agent server keeps the workflow, and providers connect through official channels.
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Your secrets stay put
Passwords, cookies and sessions live in storage protected by the operating system on your device and are never sent to the server.
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Fixed commands only
The device runs a small, versioned set of actions. No remote code, no shell, no arbitrary network access.
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The server keeps the thread
Workflow state, history and results survive network loss and restarts.
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Official channels first
Providers connect through APIs, email and webhooks, under their terms.
Process
How it works
You set the goal. T4Agent plans and carries out the steps, and stops for you where it matters.
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Say what you need
Describe the task by voice or in chat, in English, Russian or Polish.
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T4Agent plans the work
The server picks or assembles a workflow for the task and keeps its state, history and results.
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Your computer does the clicking
Website steps run in a browser inside the T4Agent app on your computer, with your own accounts and internet connection. Some steps run on the server through official APIs, email or timers.
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You approve what matters
Before a purchase or booking you see the exact amount, currency, item, seller and recipient, and you approve exactly that.
Comparison
Why not a cloud agent?
Many AI agents run a browser on their own servers and sign in to websites there. T4Agent does the work on your computer instead.
| Aspect | Typical cloud agent | T4Agent |
|---|---|---|
| Where the browser runs | On the service's servers, in a remote data centre | Inside the T4Agent app on your own computer |
| Where your sign-ins are kept | Usually with the service, on its servers | On your device, in storage protected by the operating system; never sent to T4Agent's servers |
| How websites see the visit | Traffic from data-centre addresses, which sites often treat with suspicion | Your own internet connection and IP address, as when you browse yourself |
| What the agent can do | Depends on the service; often a general-purpose browser or computer session | A fixed, versioned set of browser actions; no remote code and no shell commands |
| How purchases are confirmed | Varies; often a confirmation in the chat | An explicit approval of the exact amount, currency, item, seller and recipient; it expires, and any change cancels it |
The comparison describes cloud-hosted agents as a category, not any particular product. Individual services differ.
Security model
Built so the AI cannot act on its own
The AI proposes. Deterministic rules decide what actually happens.
Rules check every step
A deterministic workflow engine and policy check every transition the AI proposes. Payment and authorisation decisions are never left to the AI.
A fixed set of actions
The app can only open pages, click, fill in, select, read, wait, take screenshots and hand control over to you. It cannot run remote code, shell commands or arbitrary network requests.
Approvals tied to the details
An approval covers the exact amount, currency, item, seller and recipient, and it expires. If anything changes, it no longer counts. A spoken “yes” does not replace it.
Your secrets stay local
Passwords, cookies and sessions for other websites stay on your device, in storage protected by the operating system. They are never sent to T4Agent's servers.
Tasks are not lost
Tasks survive a lost connection and restarts of the app or the server. Long-running work continues on the server while your computer is off.
Fair to websites
No CAPTCHA bypassing. T4Agent respects site terms and robots rules, and prefers official APIs.
This describes how T4Agent is designed. No software is free of risk, and T4Agent is still in development.
Want to try it early?
Early access starts on Windows 10 and 11.