How it works

How Browsentic connects your agent CLI
to your signed-in browser

The side panel sends your instruction to Browsentic Bridge, a small program on your computer, which starts the agent CLI you already signed in to. Nothing is hosted in between, and there is no API key to paste.

01 Ask Type in the side panel, or say it out loud on the page.
02 Your agent works The agent you already use reads the page, then clicks, types and scrolls in your own tab.
03 You approve Submitting a form, uploading a file or leaving the site waits for your OK.

Install it Watch it work

Walkthrough

Follow one instruction from your voice to the page

Each step after you speak, in order. Press a step to replay it.

Your computer

Your browser Browsentic Bridge Your agent

Its model

bistro.acme.com

Reserve a table

✓ Booked

Date

Choose Friday

Time

Choose 19:00

Guests

Choose 2

Reserve

In your browser

“go back” runs here, in milliseconds

“Book a table for two…” goes to your agent

In Browsentic Bridge, on your computer

Starts claude the agent you signed in to

or codex, agy, vibe, grok, cursor-agent, qwen, opencode

Only the browser’s tools. Not your files, not your terminal.

In your agent

heading “Reserve a table”

select “Date” #date

select “Time” #time

select “Guests” #guests

button “Reserve” #book

Thinking with its own model, as always

Submit the booking form on bistro.acme.com?

This sends what was filled in to someone other than you.

Deny Allow Always on this site

BookatablefortwoonFridayatseven ✓ Booked for Friday at 19:00, a table for two.

1 of 7 · You say it 2 of 7 · Simple commands run in the browser 3 of 7 · Browsentic Bridge starts your agent 4 of 7 · Your agent reads the page 5 of 7 · It acts in your tab 6 of 7 · It asks before submitting 7 of 7 · The answer comes back

Voice

How your voice becomes an instruction

Your browser’s own speech recognition turns what you say into text while you say it. Browsentic only ever receives the text.

Side panel press the mic in the composer
Popup tap the mic, no panel needed
On the page hands-free, a mic over any tab

01 You talk Words appear as you say them, as a first guess.
02 You pause The words settle, misheard ones fixed, and a ring runs once around the mic. Press it to take the sentence back, or keep talking to add to it.
03 It sends Your agent gets the text. The audio never reaches Browsentic.

Talk freely

The mic listens for the tab in front of you while the browser is focused. A pause sends.

Hold to talk

Hold left Control and speak. Let go and it sends at once, with no ring. A shortcut like Ctrl+C never opens the mic.

What each mic state means

Listening

Press to mute
About to send

Press to take it back
Agent working

Press to stop the run
Needs your OK

Press to see the request
Muted

Press to listen again

Nothing to download

Speech is your browser’s own. In Chrome, audio goes to Google to become text, under Google’s privacy policy. Type instead if that matters to you.

Chrome and Edge

Firefox and Brave cannot turn speech into text, so there you type.

Microphone access, granted once

The extension opens the microphone, so you allow it once and the page you are on never gets it.

Hands-free in the docs

Under the hood

How the browser and Browsentic Bridge connect

There is no cloud browser and no relay. Everything runs on your computer, and your agent talks to its own model provider as usual.

The extension dials out

A Manifest V3 service worker cannot accept connections, so the extension opens a WebSocket out to Browsentic Bridge on loopback (127.0.0.1). Nothing listens on your network.

One link, shared

Browsentic Bridge holds the only link to your browser, so the side panel, Claude Code and Cursor can all drive the same signed-in tab without contention.

Two checks on every connection

A web page is refused first, by its Origin header, which page scripts cannot forge. Anything else then needs the one-time pairing code that only you enter, or the session key pairing left.

Read the internals The whole security model

Give your browser a superpower.

Free and open source under Apache 2.0, with no API key, subscription or account. One line installs Browsentic Bridge and opens the extension’s store page. Nothing connects until you pair the two.

Install in two minutes Star on GitHub