Container Rules Manager

Name: Container Rules Manager
Author: Sarcastic Bird

By: Sarcastic Bird Add-on

Manage Multi-Account Containers site-to-container assignments. Add, edit, and bulk-manage rules with import and export.

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-07-21

Version:

0.1.0

Last updated: 2026-05-09

Features & Capabilities

Container Rules Manager gives you a full table view of your Multi-Account Containers site assignments. Add multiple sites at once with comma-separated input, reassign sites between containers, bulk delete, and import/export rules as JSON for backup or migration.

Requires a native messaging host (Go binary) to read and write MAC's database. See the GitHub repository for installation instructions.

How it works: Multi-Account Containers locks its database while enabled. Temporarily disable MAC via about:addons, make your changes, then re-enable it. The extension detects MAC's status and guides you through this process.

https://github.com/sarcasticbird/fmac-rules-manager

User Growth & Download Statistics

Add-on

By:

Sarcastic Bird

Daily users:

Version:

0.1.0 Last updated: 2026-05-09

Version code:

6250527

Creation date:

2026-05-06

Risk:

Permissions:

Size:

16.79KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-21

Compare stats and ranking:

Ranking

# 91,691 ▲ 19,240

Other rankings

#97 in rule keyword 8 ▼ 3#207 in contain keyword 31 ▼ 3

For Developers

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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:

Sarcastic Bird

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/container-rules-manager/

Website:

https://github.com/sarcasticbird/fmac-rules-manager/issues

Is Container Rules Manager 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.

Container Rules Manager requires very minimum permissions.

Risk impact analysis details

Medium Facilitates communication between extensions and native applications, usually low risk if managed correctly.
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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.

Container Rules Manager 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 has low user count. Unpopular extensions may not be stable or safe.
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