# Codex Computer Use for Firefox

> Bring Codex computer-use capabilities and its signed-in sidebar to Firefox and Zen Browser.

Canonical page: [https://chrome-stats.com/d/codex-computer-use-for-zen](https://chrome-stats.com/d/codex-computer-use-for-zen)

## Overview

- **ID:** `codex-computer-use-for-zen`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Dara A.
- **Category:** web-development,tabs
- **Daily users:** 20
- **Weekly downloads:** 10
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 1.4.10
- **Last updated:** 2026-08-15
- **First published:** 2026-07-17
- **Size:** 15 MB
- **Data as of:** 2026-09-07
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/codex-computer-use-for-zen/)
- **Website:** [https://github.com/SunkenInTime/codex-computer-use-firefox-zen/issues](https://github.com/SunkenInTime/codex-computer-use-firefox-zen/issues)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/codex-computer-use-for-zen/privacy/](https://addons.mozilla.org/firefox/addon/codex-computer-use-for-zen/privacy/)

## Description

Codex Computer Use for Firefox and Zen Browser brings the OpenAI browser-extension workflow to Firefox-family browsers through a normal WebExtension.

The compatibility layer translates the browser-control operations used by Codex into Firefox APIs while retaining the signed-in sidebar experience. It supports semantic page inspection, clicks, typing, keyboard and pointer input, screenshots, navigation, downloads and uploads, cookies, nested cross-origin frames, network inspection, request interception, device emulation, and common JavaScript dialogs.

Zen Browser was the primary live-test target. Automated protocol tests and live signed-in computer-use acceptance tests are documented in the public repository.

This is an independent compatibility project and is not an official OpenAI, Mozilla, or Zen Browser release. An existing ChatGPT/Codex installation and account are required.

## Rankings

- #24,577 — Overall
- #67 — computer

## Permissions and access

### Permissions

- `alarms`
- `bookmarks`
- `browsingData`
- `cookies`
- `contextMenus`
- `downloads`
- `history`
- `nativeMessaging`
- `notifications`
- `scripting`
- `sessions`
- `storage`
- `tabGroups`
- `tabs`
- `topSites`
- `webNavigation`
- `webRequest`
- `webRequestBlocking`
- `webRequestFilterResponse`

### Host permissions

- `<all_urls>`

### Content script matches

- `<all_urls>`
- `chatgpt.com`

## Safety

- **Risk impact:** Very 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 was recently updated in the past month. New updates 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/codex-computer-use-for-zen)