# Brain OS — AI Agent

> Your AI brain that sees everything you browse, learns what matters, and gets smarter over time.

Canonical page: [https://chrome-stats.com/d/brain-os-ai-agent](https://chrome-stats.com/d/brain-os-ai-agent)

## Overview

- **ID:** `brain-os-ai-agent`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** myths
- **Category:** feeds-news-blogging,web-development,privacy-security
- **Daily users:** 1
- **Version:** 2.0.0
- **Last updated:** 2026-07-20
- **First published:** 2026-07-17
- **Size:** 25 KB
- **Data as of:** 2026-09-07
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/brain-os-ai-agent/)
- **Website:** [https://github.com/soics/ai-brain](https://github.com/soics/ai-brain)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/brain-os-ai-agent/privacy/](https://addons.mozilla.org/firefox/addon/brain-os-ai-agent/privacy/)

## Description

Brain OS is an open-source AI memory system that runs entirely on your machine. This browser agent gives it eyes — automatically capturing and classifying every page you visit so your AI brain remembers what matters.

No configuration needed. Install the extension, start browsing. Your brain is auto-discovered at <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/c9556f5e3dca027ea20cc8728742bcc09ade6d1fd0989e8d3f7ce820b8d09c70/http%3A//127.0.0.1%3A45678" rel="nofollow">http://127.0.0.1:45678</a>.

What it captures: Full page content (articles, docs, code), Open Graph / JSON-LD structured data, code blocks, engagement signals (scroll depth, time on page, clicked links). Pages are classified into types (article, code, docs, video, product, social, etc.) and importance-scored 1-10.

Privacy-first: Passwords, API keys, tokens, emails, and credit card numbers are stripped from captured content before saving. All data stays on your machine — never sent to external servers.

Smart features: 5-minute URL deduplication, SPA support via MutationObserver, offline queue with retry, zero-config auto-discovery, manual capture, and a live stats popup.

## Rankings

- #93,322 — Overall
- #129 — agent

## Permissions and access

### Permissions

- `storage`
- `tabs`
- `activeTab`
- `webNavigation`
- `alarms`

### Host permissions

- `http://127.0.0.1:45678/*`
- `http://localhost:45678/*`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/brain-os-ai-agent)