OpenCode Browser Plugin Firefox

OpenCode Browser Plugin

Connect OpenCode, Codex and MCP agents to your browser for page search, forms, screenshots and local action memory.
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Modify request and response headers. No ads, no malware.

Features & Capabilities

OpenCode Browser connects your coding agent to a browser profile you choose. It works with OpenCode, Codex, Claude and other MCP clients through the opencode-chromium package.

Use it to: • Search and inspect pages without copying everything into a chat. • Navigate tabs, fill forms, use the keyboard and take screenshots. • Keep separate agent sessions organized in named browser profiles. • Review upload requests before files are sent to a website. • Save successful actions in optional local memory for repeat tasks.

The panel brings connection status, decision assistance and memory into three views: Overview, Profiles and Settings. Detailed usage and diagnostics expand when you need them. Light and dark themes follow your system.

Optional decision assistance can rank ambiguous targets with Jev through OpenRouter or TypeSafe, or OpenAI Luna through OpenRouter. Cloud assistance is off by default. Screenshot sharing needs a separate opt-in. Jev can use a small image as an experimental fallback after an unsure text decision. These services require your own API key and may charge for use.

Getting started:

  1. Install the extension.
  2. Run: npx -y opencode-chromium@latest setup --all
  3. Restart your coding agent and choose the browser profile shown in the extension.

The extension requires the local native host installed by that command. It is a browser automation bridge, not a standalone chatbot. Requested page content and screenshots go to the agent you connect, which may send them to its model provider. Saved action memory stays on your device. Upload confirmation is on by default; turning it off allows uploads without a prompt. The extension has no telemetry.

Chromium browsers use the browser's debugger extension API. Firefox and LibreWolf also require the Remote Agent to be enabled at launch and configured on loopback. Setup instructions and troubleshooting: https://github.com/Quindart-com/opencode-chromium

Open source under the MIT license.

User Growth & Download Statistics

Manifest V3 Add-on
By:
Quindart Limited
Daily users:
2 1
Version:
2.0.1 Last updated: 2026-11-02
Version code:
6652758
Creation date:
2026-10-08
Firefox add-on GUID:
opencode-browser-plugin@quindart.com
Firefox add-on numeric ID:
3089799
Weekly download count:
2
Firefox on Android:
No
Risk:
High risk impact High risk likelihood
Permissions:
Host permissions:
  • <all_urls>
Size:
248.75KB
Website:
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-11-02
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:
Quindart Limited
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/opencode-browser-plugin/
Website:
https://github.com/Quindart-com/opencode-chromium/issues

Permission Change History

2026-10-24: Version 1.9.2 → 1.9.3
Remove Permissions: downloads

Is OpenCode Browser Plugin Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.
High risk impactHigh risk impact

OpenCode Browser Plugin requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
  • Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
  • High ****** ********* ** * ****** ******** ******** ********** * ******* ******* *****
  • Medium *********** ************* ******* ********** *** ****** ************* ******* *** **** ** ******* **********
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.
High risk likelihoodHigh risk likelihood

OpenCode Browser Plugin is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
  • High **** ********* *** ******** ****** *** ********** *** *** ** ****** ** *****
  • High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
  • Good *** ******* ****** ******* ** **** ************ *** ***** ******* ******* *** ******* *** * ******* ******* ** ******** ********* ***** ******* ** *** ********* *******
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Look closer at the risk signals

Review the full analysis to understand the factors behind this extension’s risk assessment.

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Risk signals support your investigation; they are not a guarantee of safety.

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