OpenViSTAI · Agents · Blockchain · Crypto
Submit a project
Menu
Browser Agents

Webbrain

Webbrain is a browser extension that places an AI agent in a side panel to answer questions about the current page and perform browser tasks.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Webbrain — OpenViST project profile in Browser Agents.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use Webbrain when a task starts with a page open in Chrome, Firefox or Edge and you want page-level answers or browser actions from a side panel.

Who it is for

  • People who want to ask questions about a page without leaving the browser tab.
  • People who want an AI agent to carry out browser steps such as clicking, typing, navigation or form filling.
  • Developers who want browser assistance involving page source, styles, console or network information.

Documented uses

  • Ask for a summary or answers about the page currently open.
  • Find relevant links on a page, such as links about pricing.
  • Fill in and submit a search box, navigate to a site, or handle other multi-step browser tasks.
  • Use page source, styles, console and network information in Dev mode, including reversible page edits.
Before you choose

Requirements & limits

The README documents installation through the Chrome Web Store, Firefox Add-ons and Microsoft Edge Add-ons. It also documents loading from source; Firefox temporary add-ons are removed when Firefox restarts, and permanent installation requires signing through Firefox Add-ons.

  • Ask, Act and Dev modes have different documented permissions and capabilities.
  • Using a local model requires a compatible local server; cloud providers and a managed default are also described.
  • The README identifies JavaScript as the repository's primary language and links to a GPL-3.0-or-later license.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Load WebBrain from source in Chrome

Install a development copy of the WebBrain extension in Chrome.

Before you start

  • A local copy of the WebBrain repository, obtained by cloning https://github.com/webbrain-one/webbrain.git.
  • Chrome.

Steps

  1. Clone the repository with the command below.

    Documented command
    git clone https://github.com/webbrain-one/webbrain.git

  2. Open chrome://extensions/ in Chrome and enable Developer mode.

  3. Click Load unpacked and select the repository's src/chrome folder.

  4. Alternatively, run the command below first and select build/chrome for an isolated copy.

    Documented command
    npm run build:chrome

Expected outcome

WebBrain is loaded in Chrome as an unpacked extension.

Guide limitations

  • This is a development-loaded extension, not a permanent store installation.
  • The documented source does not provide details on setting up a model or using the extension after loading it.
Documentation 1 ↗
Source-based practical guide

Load WebBrain temporarily in Firefox

Install a temporary development copy of the WebBrain extension in Firefox.

Before you start

  • A local copy of the WebBrain repository, obtained by cloning https://github.com/webbrain-one/webbrain.git.
  • Firefox.

Steps

  1. Clone the repository with the command below.

    Documented command
    git clone https://github.com/webbrain-one/webbrain.git

  2. Open about:debugging#/runtime/this-firefox in Firefox.

  3. Click Load Temporary Add-on and select src/firefox/manifest.json.

  4. Alternatively, run the command below first and select build/firefox/manifest.json.

    Documented command
    npm run build:firefox

Expected outcome

WebBrain is loaded as a temporary Firefox add-on.

Guide limitations

  • Temporary add-ons are removed when Firefox restarts.
  • Permanent installation requires signing via addons.mozilla.org.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
15 October 2026
Original website title
webbrain-one/webbrain · Official homepage title · retained in its source language
How we review sourcesSuggest a correction