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Agent orchestration

Run several agent sessions at once, one per tab, in one browser

Each conversation is bound to the tab it started in, not to the tab you are looking at. Start one, switch tabs, start another: each keeps working in its own tab.

Sessions

Every tab keeps its own conversation

Three sessions work at once by default, so the fourth holds for a slot rather than crowding the browser.

app.acme.com working

Invoices

Six invoices gone past due

  • sees six invoices past due
  • takes in the terms agreed on each
  • wording the reminders now

agent: claude

help.vendor.io approval

Ticket 8841

The renewal, argued back down

  • read fourteen messages of history
  • weighed the offer against last year
  • waiting on you before it reaches them

agent: codex

dash.deploys.dev working

Release 2291

Watching the release land

  • reads the progress the page shows
  • pinned to this tab, in the background
  • about a minute to go

agent: claude

jobs.acme.com queued

Application

Applying with the resume you attached

  • holding for a slot
  • three sessions already at work

agent: agy

Underneath

One link out, one agent per session

One Browsentic Bridge

127.0.0.1 · loopback only

Nothing listens inside the browser. The extension opens the link itself, and Browsentic Bridge owns it, however many sessions are in flight.

One agent per session

all slots in use

Started as you, with the CLI you already signed in to, and told about this session only.

Rules

What a session can and cannot reach

A session belongs to its tab

It is bound to the tab it started in and keeps working there while you look at something else. Reaching into a tab it was never pointed at is a gated action.

Two sessions never share a tab

A tab another conversation has claimed answers TAB_IN_USE. Tabs a session opens for itself join that same session, so everything it did stays in one transcript.

Three at a time, eight open

Three sessions work at once by default, so the fourth holds for a slot instead of crowding the browser. Raise maxConcurrentRuns as far as eight.

Stopping one leaves the rest alone

End the session in front of you and the others carry on. Close a tab and only that one ends, with its transcript moved to History.

shared link

MCP clients use the same link. Claude Code in one terminal and Cursor in another drive the same browser, and each of their steps shows on the side panel timeline, marked external.

Keep reading

Conversations

Voice, text, one conversation per tab, and where history goes.

maxConcurrentRuns

Raise how many sessions work at once, up to the ceiling.

Share it with other clients

Claude Code, Cursor and Zed on the same browser at the same time.

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
Available in the Chrome Web Store Available on Edge Add-ons Firefox add-on, signed by Mozilla