Let your AI work inside the browser you are already signed in to
T3rnel Browser lets an AI assistant work inside the browser you are already signed in to: your real profile, sessions and cookies, with no API keys, no logins to hand over and no separate headless browser. It runs 97 tools against your open tabs.
Updated · T3rnel Browser 1.4.1
The difference
Most browser automation starts from nothing: a fresh profile, no cookies, and a login screen. T3rnel Browser starts from the browser you actually use, so an assistant can open the dashboard you are already in, read a page, fill a form, capture a full-page screenshot or watch the network, with the access you already have.
What it does for you
- Navigates, clicks, types, selects and scrolls in your real tabs.
- Reads pages as text, snapshots and Markdown, and captures network and console activity.
- Runs the extension's own tools: CSS inspection, full-page capture, audits and visual diffs.
- Works in Chrome, Brave, Edge and Chromium, and partly in the other browsers listed on the FAQ.
Connect it
Add the MCP Session Bridge to your assistant's MCP configuration, then sign in to the extension with GitHub, Google or GitLab. The manual has the exact steps.
Control, when you want it
The approval gate is off by default. Turn it on and the high-risk tools, which change pages, fill forms or run scripts, wait for you; the low-risk ones, which only read, never do. How the gate classifies every tool.
Questions
Does the AI need my passwords?
No. It acts through tabs where you are already signed in, so it never receives your credentials. If you choose to keep a login in the encrypted identity vault, the vault is encrypted with a key derived from your own passphrase.
How is this different from a headless browser or an API?
A headless browser starts logged out and has to be given credentials, and many sites block it. An API only offers what its provider chose to expose. This works on the pages you can use yourself, as you.
Does my agent have to ask before it clicks?
Not by default. The approval gate ships off: allowing AI/MCP automation at install is the consent. You can turn the gate on, per tool, if you want to be asked.
What does it cost?
Driving the browser from your AI is free, unlimited and needs no account. The extension's own tools need a free account with a monthly allowance; Pro is $29.99 once, covers up to five signed-in browsers and is never a subscription.